Burgtec Thick Thin Chainring 104mm BCD

The Burgtec 104mm BCD Thick Thin Chainring is built to be the ideal partner for Shimano cranks. Engineered with a thick-thin tooth profile that locks into your chain with every rotation, it works in tandem with clutch derailleurs to keep your chain exactly where it belongs — on the ring — no matter how rough, rocky or rowdy the trail gets. Machined from aerospace grade aluminium, it delivers the strength and durability serious trail riders demand without unnecessary weight penalty.

Design Features

• Thick-thin alternating tooth profile precisely engages each chain link, dramatically reducing the chance of chain drop on rough and technical terrain
• Designed to pair with clutch derailleurs for a complete chain retention solution — no chain guide required on most builds
• Machined from aerospace grade aluminium for an excellent strength-to-weight ratio and long-term durability
• 104mm BCD bolt pattern makes this a direct-fit upgrade for a wide range of popular Shimano cranks
• Available in 30T, 32T, 34T and 36T tooth counts to suit everything from steep enduro descents to all-mountain riding
• Note: The 30T variant features threaded bolt holes and requires 8mm x 0.75mm x 8mm long chainring bolts — ensure correct hardware is used at installation

Specifications

• BCD: 104mm
• Material: Aerospace grade aluminium
• Available sizes: 30T, 32T, 34T, 36T
• Compatibility: Shimano cranks with clutch derailleurs
• 30T bolt hole note: Threaded — requires 8mm x 0.75mm x 8mm long chainring bolts (sold separately)