The new Eagle X0 Cassette offers a new industry leading shifting performance, giving you the best inboard and outboard shifting under load. It has been engineered as integrated and interdependent components, the X0 Eagle Transmission Cassette and derailleur contact directly, ensuring perfect alignment on every bike.Full X-SYNC for best-ever inboard and outboard shifting performance under loadOptimised gear steps on low end55mm chainline compatibility for more moderate chain angle, longer wear and greater precisionSetup Cog for fool-proof set upFeatures X-DOME with a lighter aluminium 12th gearFully E-MTB approvedThis new Cassette from SRAM has  a unique and stunning Dark Polar finish that will really enhance the look of your bike. But beyond that the cassette deliver incredible performance, starting with the nickel plating which gives incredible corrosion & wear resistance. The X-Sync design means that the harder you pedal the better the shifting performance. A mark of its incredible s