With its Beam Spider construction, the CS-M9100 XTR 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.
- Increased acceleration by reducing inertia and weight by Beam Spider construction
- Alloy 5 beam spider carrier with 3 alloy, 5 titanium and 4 Chromoly sprockets make this a lightweight, stiff and durable 12-speed Micro Spline MTB cassette
- Hyperglide+ sprockets have a computer designed tooth configuration with contoured shift gates, resulting in 1/3 faster shift time than current HG cassettes providing seamless, smooth operation even under load
- 10-45T wide ratio gearing allows a more efficient use of energy through finer cadence control in ever changing trail conditions
- Sprockets are cut away extensively and drilled to further reduce weight without reducing rigidity
- Sprockets use hard anodising and nickel-plated finish for added durability and resistance to corrosion
- Alloy cassette lock ring
- For use with Shimano 12-speed SIL-TEC chains
- Average weight 357g





