Shimano XTR CS-M9101 Cassette 12 Speed

With its beam spider construction, the XTR M9100 12-speed cassette shaves weight while increasing Shimano's MTB gearing range to another gear. Using Shimano's new micro spline freehub body and hyperglide+ tooth profile, the 10-51T cassette delivers the best MTB shift experience on offer. -Compatible with Shimano Hyperglide+ chains -Hyperglide+ technology offers better chain engagement, stronger retention, and smoother pedaling for greater power and confidence over rapidly changing terrain -Micro Spline technology delivers lightweight aluminum freehub body to reduce weight and utilize a 10 tooth top gear -The Wide Range XTR M9100 cassette option offers 510% gear range -Can only be used for 1x12 set ups with the long cage rear derailleur -The CS-M9100 cassette meets durability requirements for E-MTB applications