Shimano XTR CS-M9100 12 Speed Cassette - 12 Speed - Shimano Micro Spline - 10-51T - Black - Silver PDP|Colour The rotor uses internal fins

The rotor uses internal fins to allow the air to flow between the two friction parts

clockwise to tighten — allows for a precisely dialled fit

This process creates an especially tear and abrasion-resistant material which is ideal for the highly stressed areas of our products

Note: The remote will continue to draw a small amount of power from a light still connected to a battery pack even when turned off

Shimano XTR CS-M9100 12 Speed Cassette - 12 Speed - Shimano Micro Spline - 10-51T - Black - Silver PDP|Colour The rotor uses internal finsWith its BEAM SPIDER construction, the XTR M9100 12 speed cassette shaves weight while increasing SHIMANO's MTB gearing range another gear. Using SHIMANO's new MICRO SPLINE freehub body and HYPERGLIDE+ tooth profile, these 10 45 and 10 51T cassettes deliver the best MTB shift experience on offer. FEATURES: Definitive shifting Lets you pedal continuously while shifting Increased acceleration by reducing inertia and weight by BEAM SPIDER construction