The purists choice for street and track performance. The new 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 full 5mm thick 7075-T6 chainwheel was developed for use only with 1/2 x 1/8 chains.