S68808 SP 1-1/2 440C stainless steel Angular Contact Headset bearing (40 x 53 x 7mm: 45 x 45deg)Angular contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: BB S68808 SP-bag

HDK-0022 - 1-1/8' x 1-1/2' stainless steel, Angular Contact, Zero-Stack/External Cup Headset Bearing Kit for 44/44mm ID head tube framesetsMAXhit is Enduros latest patent-pending innovation; where the bearing is actually the component. MAXhit headset bearings are designed to press directly into your bicycles headtube, eliminating the need for the aluminum cups that are traditionally used to carry the bearings. This unique design frees-up space for much larger balls that more than double the load capacity compared to standard headset bearings. The kit includes fork crown race and upper split-ring and upper bearing cap.Machined entirely from 440C stainless steel and guaranteed for life, Maxhit headset bearings include proprietary double-lip labyrinth seals and Enduros extra high pressure grease to ensure a lifetime of trouble-free, heavy duty performance.The Enduro line of headset bearings begin with chromium steel, Black Oxide finish A/C type and then offer full 440C stainless steel at the top. They are always engineered with the largest balls possible and dual lip seals riding in a micro-groove for ultimate protection against sweat and the elements. They are filled 90% with high pressure water proof grease, so you never have to guess if there is grease inside. Enduro Angular Contact (A/C) bearings, all balls are engaged to spread the force over a larger surface area, pressure water and minimizing wear.Enduro Item Code: HDK-0022

HDK-0013 - IS 41/52 36x45 Drop-In headset kit.This IS41/IS52 integrated/drop-in headset fits bikes with head tubes with 41mm top IDs and 52mm bottom IDs, bearings with 36°/45° chamfers, and tapered (1.125' x 1.5”) steerer forks. Includes 440C stainless steel upper and lower bearings, upper bearing cap, hidden bolt topcap preload adjuster, with 36° crown race and compression ring.Enduro stainless headsets always feature top-quality 440C balls and races, dual-lip seals top and bottom, 90% fill with high-pressure waterproof grease, and are guaranteed for as long as you own the bike.This headset features upper 1-1/8” bearing ACB 3645 SS (also known as 27287-1046-004, HSS0130K, TH-873E, & MR-122) with 30.2mm ID, 41mm OD, and a width of 6.5mm, and lower 1-1/2' bearing ACB 6008 SS (also known as HD 1404K, BAA0006K, MR-127, MR-196, MH-P25K, BAA1132, and TH MR019) with a 40mm ID, 52mm OD and a width of 6.5mm. This headset should be a direct fit replacement, but if you need additional clearance/stack, we also make spacers for both the upper (HD-120 included) and lower bearings (WA-36 1x150 available separately) to provide a little extra room between the fork or upper bearing cap and the bike’s head tube.

HDK-0012 - IS 42/52 45x45 Drop-In headset kitThis IS42/IS52 integrated/drop-in headset fits bikes with head tubes with 42mm top IDs and 52mm bottom IDs, bearings with 45°/45° chamfers and tapered (1.125' x 1.5”) steerer forks. Includes 440C stainless steel upper and lower bearings, upper bearing cap, hidden bolt topcap preload adjuster, with 45° crown race and compression ring.Enduro stainless headsets always feature top-quality 440C balls and races, dual-lip seals top and bottom, 90% fill with high-pressure waterproof grease, and are guaranteed for as long as you own the bike.This headset features ACB 4545 1125 SS (also known as MR042, 870E, MR121, MR070, MR084, MR116, TH-870E, and MH-P08) with 30.5mm ID, 41.8mm OD, and a width of 6.5mm, and ACB 4545 150 SS (also known as HSS011, BAA0695K, TH-070, MR-128, and MH-P16) with 40mm ID, 52mm OD and a width of 7mm. Please note that both of these bearings differ in width from many of the standard bearings that they replace, though they stack to the same height when installed. If you need additional clearance, we also make spacers for both the upper (HD-120 included) and lower bearings (WA-45 1x150 available separately) to provide a little extra stack.

HDK-0011 - IS 42/52 36x45 Drop-In headset kitThis IS42/IS52 integrated/drop-in headset fits bikes with head tubes with 42mm top IDs and 52mm bottom IDs, bearings with 36°/45° chamfers, and tapered (1.125' x 1.5”) steerer forks. Includes 440C stainless steel upper and lower bearings, upper bearing cap, hidden bolt topcap preload adjuster, with 36° crown race and compression ring.Enduro stainless headsets always feature top-quality 440C balls and races, dual-lip seals top and bottom, 90% fill with high-pressure waterproof grease, and are guaranteed for as long as you own the bike.This headset features upper 1-1/8” bearing ACB 3645 1125 SS (also known as IS42, ACB30418K, and MH-P03K) with 30.5mm ID, 41.8mm OD that features a step down to just under 41mm at the top of the outer race, and a width of 6.3mm, and lower 1-1/2' bearing ACB 6008 SS (also known as HD 1404K, BAA0006K, MR-127, MR-196, MH-P25K, BAA1132, and TH MR019) with a 40mm ID, 52mm OD and a width of 6.5mm. This headset should be a direct fit replacement, but if you need additional clearance/stack, we also make spacers for both the upper (HD-120 included) and lower bearings (WA -36 1x150 available separately) to provide a little extra room between the fork or upper bearing cap and the bike’s head tube.

HDK-0010 - 1-1/8' x 1-1/2' stainless steel, Angular Contact, Zero-Stack Headset Bearing Kit for 44/56mm ID head tube framesetsMAXhit is Enduros latest patent-pending innovation; where the bearing is actually the component. MAXhit headset beaings are designed to press directly into your bicycles headtube, eliminating the need for the aluminum cups that are traditionally used to carry the bearings. This unique design frees-up space for much larger balls that more than double the load capacity compared to standard headset bearings. The kit includes fork crown race and upper split-ring and upper bearing cap.Machined entirely from 440C stainless steel and guaranteed for life, Maxhit headset bearings include proprietary double-lip labyrinth seals and Enduros extra high pressure grease to ensure a lifetime of trouble-free, heavy duty performance.The Enduro line of headset bearings begin with chromium steel, Black Oxide finish A/C type and then offer full 440C stainless steel at the top. They are always engineered with the largest balls possible and dual lip seals riding in a micro-groove for ultimate protection against sweat and the elements. They are filled 90% with high pressure water proof grease, so you never have to guess if there is grease inside. Enduro Angular Contact (A/C) bearings, all balls are engaged to spread the force over a larger surface area, pressure water and minimizing wear.Enduro Item Code: HDK-0010

HDK-0008 - 1-1/8' stainless steel, Angular Contact, External Bearing Kit for 34mm (1-1/8') ID head tube framesetsThis unique bearing kit eliminates the external headset bearing cup and provides a simple low profile solution where the bearing itself presses directly into the head tube. The kit includes fork crown race and upper split-ring and cap.Not all stainless steel is created equal. Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine Grease in these bearings to additionally water proof against the elements.The Enduro line of headset bearings begin with chromium steel, Black Oxide finish A/C type and then offer full 440C stainless steel at the top. They are always engineered with the largest balls possible and dual lip seals riding in a micro-groove for ultimate protection against sweat and the elements. They are filled 90% with high pressure water proof grease, so you never have to guess if there is grease inside. Enduro Angular Contact (A/C) bearings, all balls are engaged to spread the force over a larger surface area, pressure water and minimizing wear.Enduro Item Code: HDK-0007

HDK-0007 - 1-1/8' Black Oxide, Angular Contact, External Bearing Kit for 34mm (1 1/8') ID head tube framesetsThis unique bearing kit eliminates the external headset bearing cup and provides a simple low profile solution where the bearing itself presses directly into the head tube. The kit includes fork crown race and upper split-ring and cap.These bearings feature anti-corrosion Black Oxide/Magnetite coated 52100 High-Carbon Chromium alloy races paired with grade 10 Balls, dual-lip labyrinth (LLB) seals to withstand the outside elements, and to contain the 90% fill Mobil XHP 222 high pressure water proof synthetic grease. Black Oxide coating provides an extra level of corrosion resistance and extended worry-free performance.The Enduro line of headset bearings begin with chromium steel, Black Oxide finish A/C type and then offer full 440C stainless steel at the top. They are always engineered with the largest balls possible and dual lip seals riding in a micro-groove for ultimate protection against sweat and the elements. They are filled 90% with high pressure water proof grease, so you never have to guess if there is grease inside. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, pressure water and minimizing wear.Enduro Item Code: HDK-0007

HDC-120 - 1-1/8' x 0.25mm Upper Headset Bearing Shim (28.7mm x 34.5mm x 0.25mm)This small shim is a perfect fit for fine-tuning your headset installation. Insert this 0.25 mm-thick spacer between your headset’s compression ring and upper bearing cap to increase the clearance between the bearing cap and the headtube of your bicycle.For adding space between your fork and frameset, try WA 36-150x1 (for 36° 1-1/2” lower headset bearings) or WA 45-150x1 (for 45° 1-1/2” lower headset bearings) between the fork crown and the bearing’s inner race to add 1mm of stack to that area of the bike.

B 543 LLB SS - 1-1/2 stainless steel Headset bearing (1-9/16 x 2 x 9/32 inch)1-1/2bearing for Internal Headsets featuring 440C stainless steel balls and races to provide superior corrosion resistance.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: BB B 543 LLB SS-bx

B 543 2RS MAX - 1-1/2 Max-Type Headset Bearing (1-9/16 2 x 9/32 inch)1-1/2 Full-Complement, Max-Type Bearing for Internal headsets, featuring 52100 High-Carbon Chromium alloy races paired with grade 10 balls.Enduro line of headset bearings starts with Black oxide treated Chromium steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and areilled 90%ith high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenlyngaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: BB B 543 2RS MAX-bag

B 543 2RS AC - 1-1/2 Angular contact Headset Bearing (Cannondale Lefty) 1-9/16 x 2 x 9/32 inch1-1/2 Angular contact Bearing for Internal Headset featuring 52100 High-Carbon Chromium alloy races paired with grade 10 Balls. (Cannondale Lefty)The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: BB B 543 2RS A/C

B 542 SS - 1-1/8 stainless steel, Torque-Tube Radial Design Headset bearing - 1-5/16 x 1-3/4 x 9/32 inchRadial Bearing for Internal headsets, featuring 440C stainless steel balls and races to provide maximum corrosion resistance. Torque Tube bearings feature inner races that are slightly wider than the outer race.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and aslightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative forse in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: BB B 542 SS

B 541 MAX- 1 Max-Type Headset Bearing - 1-1/16 x 1-1/2 x/32 inchFull-Complement/Max-Type bearing for Internal headsets - 52100 High-Carbon Chromium alloy races paired with grade 10 Balls.The Enduro line of headset bearings starts with Black Oxide treated Chromium steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: BB B 541 MAX

B 541 SS - 1 Stainless Steel, Torque-Tube Radial Design Headset bearing (1-1/16 x 1-1/2 x 9/32 inch)Radial bearing for internal Headsets featuring 440C stainless steel balls and races to provide maximum corrosion resistance. Torque Tube bearings feature inner races that are slightly wider than the outer race.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and as slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: BB B 541 SS

ACB Mini 276442O - 1' Angular Contact Black Oxide treated Headset bearing (14.2 x 25 x 6.5mm: 45 x 45deg) -Angular-contact headset bearing featuring anti-corrosion Black oxide/Magnetite coated 52100 High-Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide coating provides an extra level of corrosion resistance and extended worry-free performanceThe Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium steel races, steps up to full 440C stainless steel, and the top of the lines, lifetime-guaranteed, XD15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: ACB Mini 276442 BO-bag

ACB Mini 276442 SS - 1' 440C Stainless Steel Angular Contact Headset Bearing (14.2 x 25 x 6.5mm: 45 x 45deg) -Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash you bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine Grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: ACB Mini 276442 SS-blk

ACB 6808 SS, 290413 - 1-1/2' 440C stainless steel Angular Contact Headset bearing (40 x 51 x 6.5mm: 36 x 36deg)Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection. Please note that this bearing has slightly different dimensions from the other ACB 6808 bearings we sell, it has a slightly smaller OD and has 36 degree chamfers internally and externally. It was originally spec'd by Trek on Madone and Domane bikes.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 6808 SS, 290413-bag

ACB 6808 CC SXD 1-1/2' XD-15 Angular Contact Headset bearing (40 x 52 x 6.5mm; 36 x 45deg)Angular contact Bearing for Internal Headset featuring 440C stainless steel balls paired with XD-15 races to provide lifetime corrosion resistance.This is the last headset bearing you will ever install into your bike.A recent Enduro development, these full XD-15 bearings are virtually identical in performance and corrosion resistance to our XD-15 Ceramic-hybrid bearings used for hubs and bottom brackets, but lend themselves better to the more abusive application of the headset. The mechanical properties of XD-15 stainless steel balls provide a level of impact resistance superior to ceramic balls for headset application. Enduro testing of bearings with XD-15 balls and races have been run in salt water for months without any corrosion, there is simply nothing on the market that compares. We are so confident in this material that we guarantee these full XD-15 headset bearings for life, against corrosion.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 6808 CC SXD

ACB 6808 CC SS - 1-1/2' 440C stainless steel Angular Contact Headset bearing (40 x 52 x 6.5mm; 36 x 45deg) -Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatments to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine Grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: ACB 6808 CC SS-bx

ACB 6808 CC 1-1/2' Angular Contact Black Oxide treated Headset bearing (40 x 52 x 6.5mm; 36 x 45deg) -Angular-contact headset bearing featuring anti-corrosion Black Oxide/Magnetite coated 52100 High-Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide coating provides an extra level of corrosion resistance and extended worry-free performance.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium steel races, steps up to full 440C stainless steel, and the top of the lines, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: ACB 6808 BOCC-bag

ACB 6806 CC BO - 1-3/8' Angular Contact Black Oxide treated Headset bearing (37 x 49 x 6.5mm; 36 x 45deg) -Angular-contact headset bearing featuring anti-corrosion Black Oxide/Magnetite coated 52100 High-Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide coating provides an extra level of corrosion resistance and extended worry-free performanceThis size bearing is also known in the bike Industry by part number HD446KThe Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 6806 CC BO-bx

ACB 6806 CC SS- 1-3/8' 440C stainless steel Angular Contact Headset bearing (37 x 49 x 6.5mm; 36 x 45deg)Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.This size bearing is also known in the bike Industry by part number HD446K.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatments to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine Grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: ACB 6806 CC SS-bag

ACB 6805 CC 1' Angular Contact Black Oxide treated Headset bearing (27.15 x 38 x 6.5mm: 36 x 45deg) -Angular-contact headset bearing featuring anti-corrosion Black oxide/Magnetite coated 52100 High-Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide coating provides an extra level of corrosion resistance and extended worry-free performanceThe Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium steel races, steps up to full 440C stainless steel, and the top of the lines, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: ACB 6805 CC BO-bx

ACB 6805 CC 1' Angular Contact Black Oxide treated Headset bearing (27.15 x 38 x 6.5mm: 36 x 45deg)Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 6805 SS-bx

ACB 6804 BO 1' Angular Contact Black Oxide treated Headset bearing (19 x 30 x 6.5mm: 45 x 45deg)Angular-contact headset bearing featuring anti-corrosion Black oxide/Magnetite coated 52100 High-Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide coating provides an extra level of corrosion resistance and extended worry-free performanceThe Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 6804 BO-blk

ACB 68025C - 1-1/8' Angular Contact Black Oxide treated Headset bearing (33.15 x 46.9 x 6.5mm: 36 x 45deg)Angular-contact headset bearing featuring anti-corrosion Black Oxide/Magnetite coated 52100 High-Carbon Chromium alloy races paired with grade 10 Balls.lack Oxide coating provides an extra level of corrosion resistance and extended worry-free performanceThis size bearing is also known in the bike Industry by part number HD408KThe Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 68025 CC-bx

ACB 4545 150 SSM - 1-1/2 440C stainless steel Angular Contact Headset bearing (40mm x 51.8mm x 7mm: 45x45 deg)Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.This size bearing overlaps the size of the ACB 4545 150 very closely, but features a slightly smaller (51.8mm) OD to accommodate tighter lower bearing seats found in some framesets. This size bearing is also known in the bike Industry by these part numbers:HSS011BAA0695KTH-070MR-128MH-P16Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires special heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though it is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions or where sweat and spilled sports drinks can be a problem. Enduro Bearings also uses LLB-type seals and Almagard 3752 grease in these bearings to additionally waterproof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands with a lifetime warranty.The Enduro line of angular-contact headset bearings starts with Black Oxide treated Chromium Steel races and then steps up to full 440C stainless steel. They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth), and are filled 90% with high-pressure waterproof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Static load - 977lbf / 4.34kNWeight - 24g

ACB 4545 S8551 BO 1-3/8' Angular Contact Black Oxide treated Headset bearing (36.8 x 45.8 x 6.5mm: 45 x 45 deg) -Angular-contact headset bearing featuring anti-corrosion Black Oxide/Magnetite coated 52100 High-Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide coating provides an extra level of corrosion resistance and extended worry-free performanceThe Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and theop of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: ACB 4545 S8551 BO-bx

ACB 4545 4252 SS - 1-1/2 440C stainless steel Angular Contact Headset bearing (42mm x 52mm x 7mm; 45 x 45deg)Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.This size bearing has been used as an upper bearing for Acros headsets that are designed specifically for aero cable routing, and is also know by part number AC4252Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires special heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though it is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions or where sweat and spilled sports drinks can be a problem. Enduro Bearings also uses LLB-type seals and Almagard 3752 grease in these bearings to additionally waterproof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands with a lifetime warranty.The Enduro line of angular-contact headset bearings starts with Black Oxide treated Chromium Steel races and then steps up to full 440C stainless steel. They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth), and are filled 90% with high-pressure waterproof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Static load - 917lbf / 408kNWeight - 24.9g

ACB 4545 405495 SS 1-1/2' 440C stainless steel Angular Contact Headset bearing (40.5 x 49.5 x 6.5mm: 45x45 deg) - Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 4545 405495 SS-bag

ACB 4545 150 SS - 1-1/2' 440C stainless steel Angular Contact Headset bearing (40 x 52 x 7mm: 45x45 deg)Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro bearings also uses LLB type seals and CRC Marine Grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: ACB 4545 150 SS-bag

ACB 4545 150 BO - 1-1/2' Black Oxide Angular Contact Headset bearing (40 x 52 x 7mm: 45x45 deg)Angular-contact headset bearing featuring anti-corrosion Black oxide/Magnetite coated 52100 High-Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide coating provides an extra level of corrosion resistance and extended worry-free performanceThe Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 4545 150 BO-bag

ACB 4545 1375S - 1-3/8' 440C stainless steel Angular Contact Headset bearing (37 x 49 x 7mm: 45 x 45deg) -Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.Not all stainless steels created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are 90% filled with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 4545 1375 SS-bag

ACB 4545 137 SS - 1-3/8' stainless steel, Angular Contact Headset BearingAngular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.This size bearing is also known in the bike Industry by part number MR137Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 4545 137 SS-bx

ACB 4545 136 SS - 1-1/4' 440C stainless steel Angular Contact Headset bearing (32.75 x 41.75 x 6mm: 45x45deg)Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 4545 136 SS-bx

ACB 4545 125T SS - 1-1/8' 440C stainless steel Angular Contact Headset bearing (34.1 x 46 x 7mm: 45x45deg)Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatments to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine Grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.Enduro Item Code: ACB 4545 125T SS-bx

ACB 4545 125L SS - 1-1/4' 440C stainless steel Angular Contact Headset bearing (34.1 x 46.8 x 7mm: 45x45deg)Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series of high carbon content stainless alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 4545 125L SS-bag

ACB 4545 1125T SS - 1-1/8' 440C stainless steel Angular Contact Headset bearing (30.15 x 41 x 7mm: 45x45deg)Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.Not all stainless steel is created equal.Enduro only uses 440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal. 440C has the highest strength, hardness, and wear resistance of all the standard 440-series stainless alloys with high carbon content. As expected, it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatments to achieve its superior mechanical properties. Though stainless steel has 20% less load capacity and is slightly softer than our standard 52100 chromium steel used in most of our bearings, stainless steel is an excellent alternative for use in wet conditions, if you wash your bike often, or where sweat can be a problem. Enduro Bearings also uses LLB type seals and CRC Marine Grease in these bearings to additionally water proof against the elements. Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands, including those that carry a 110 year warranty.The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, minimizing wear and maximizing life.Enduro Item Code: ACB 4545 1125T SS-bx