Shimano XT M8100 12 Speed Cassette 10-51T 99 Bikes Cups and Sleeve - Steel

Cups and Sleeve - Steel (BBS Cylindrical) / Stopper - Engineering Polymers

as it has 4 different spacers and 3 different studs

and Dunlop valves and comes with a centerline mount bracket for convenient storage

and Cantilever Brakes

Shimano XT M8100 12 Speed Cassette 10-51T 99 Bikes Cups and Sleeve - SteelFeatures Average weight: 470 g (10 51T) 10 12 14 16 18 21 24 28 33 39 45 51T Compatible Chain: HG 12 speed Lighter and stiffer construction 10T lowest sprocket realized by new Freehub body construction New shift ramp designs provide the fastest, smoothest shifts by HyperGlide+ Reduces cassette inertia resulting in faster acceleration and increased chain security.