Burgtec Oval Thick Thin Chainring GXP 3mm Offset Direct Mount

Burgtec's Oval Thick Thin Chainring brings genuine mechanical advantage to your pedal stroke without any compromise on chain retention. After extensive prototyping, Burgtec landed on 115° of ovality (measured from top centre) as the sweet spot — enough to shrink the dead spot at the top and bottom of the power phase and amplify the downward stroke where the bulk of your power actually comes from. The result is an effective ±2T gearing shift: a 30T ring delivers a 32T power phase with a 28T dead spot, meaning bigger gearing precisely when you're driving the pedals hardest. The GXP 3mm offset direct mount interface dials in chainline for modern boost frames, and the thick-thin tooth profile keeps the chain locked in place lap after lap.

Design Features

• Thick-thin tooth profile provides positive chain engagement and eliminates chain drop across 10, 11 and 12-speed drivetrains
• 115° ovality optimised through real-world prototype testing — reduces the dead spot and maximises the power phase on every pedal stroke
• ±2T effective gearing range per ring size: 30T runs a 32T power phase and 28T dead spot; 32T runs a 34T power phase and 30T dead spot
• GXP 3mm offset direct mount interface for precise chainline on boost and super-boost frames
• Fully CNC machined from 7075 aluminium for an excellent strength-to-weight ratio and long-term durability
• Available in 30T and 32T across a wide range of Burgtec colourways to match your build

Specifications

• Interface: GXP 3mm offset direct mount
• Ovality: 115°
• Chain compatibility: 10, 11 and 12-speed
• Sizes: 30T, 32T
• Material: CNC machined 7075 aluminium
• Weight: 84g
• Colours: Burgtec Black, Race Red, Deep Blue, Purple Rain, Kash Bronze, Iron Bro Orange, Rhodium Silver, Burgtec Bullion Gold, Toxic Barbie Pink