The new Shimano XT CS-M8100 12-speed mountain bike cassette, with its BEAM SPIDER construction, sheds weight while expanding Shimano's MTB gearing range by another gear. Utilizing Shimaon's innovative MS freehub body and HYPERGLIDE+ tooth profile, these 10-45 and 10-51T cassettes deliver advanced shifting performance.

Can also be used with the new Shimano GRX.

Features:

- Definitive shifting performance
- New shift ramp designs provide the fastest, smoothest shifts by HYPERGLIDE+
- BEAM SPIDER construction
- Lighter and stiffer, reducing cassette inertia for faster acceleration and enhanced chain security
- MICRO SPLINE technology
- Enables a 10T lowest sprocket, achieved through new FREEHUB body construction
- Offers a wide range and close step 12-speed drivetrain

Product specifications

- Average weight: 461g (10-45T), 470g (10-51T)
- Type: HYPERGLIDE+
- Rear speeds: 12
- Compatible chain: HG 12-speed
- Combination name (Group name): 10-45T, 10-51T
- Combination (Titanium gear):
  - 10-12-14-16-18-21-24-28-32-36-40-45T
  - 10-12-14-16-18-21-24-28-33-39-45-51T
- Spline type: MICRO SPLINE
- Aluminum spider arm (QTY): 1
- Aluminum gear (QTY): 2
- Steel gear (QTY): 10

Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.