e*thirteen Helix Raxe 3-Bolt chainring

A technological first. Combine it with the chain, derailleur/shifter of your choice without changing the chain’s retention quality.Create the gear of your dreams with greater freedom and creativity.Save weight, keep your drivetrain options open and use the chain you want3-bolt direct mount design for use with SRAMu2122 3-bolt direct mount compatible cranksCut from AL-7075 billet for maximum strength and wear resistanceCompatible with SRAMu2122 and Shimanou2122 11- and 12-speed chainsFully CNC machined for light weight and killer looksDetails: Updated narrow-wide M4 tooth profile improves retention, reduces chain noise and decreases system wear. Helix R 3-bolt direct-mount chainring, 3 mm offset Compatible with SRAMu2122 and Shimanou2122 11- and 12-speed chains Compatible with all SRAMTM 3-bolt direct-mount cranks or other brand-name cranks that use 3-bolt chainrings Material, aluminum alloy AL-7075-T6 Weight, 28t, 52g, 30t, 58g, 32t, 62g, 34t, 68g