SRAM Omnium Track Crankset - 175mm Single Speed 48t 144 BCD GXP Spindle Interface Black. SRAM Omnium Track Crankset is the first external bearing track crank in the world. Designed for world-class track racing but also at home as the ultimate fixie crankset the Omnium features SRAM's strongest and stiffest alloy 7050-T6. The Omnium is the purists' choice for street and track performance.

Forged AL-7050 arms AL-7075-T6 chainring

Giga X Pipe (GXP) uses a 24mm CroMoly spindle integrated with right crank arm and aluminum cups with 4 sealed external cartridge bearings

Includes GXP / PressFit GXP 68mm cup and bearing set

Q-factor is 145mm