The Shimano XT Upgrade Kit - Your entry into the 12-speed world
The Shimano XT 1x12 Upgrade Kit enables all those who do not ride a Shimano crank to enter the world of 12-speed shifting with Shimano. It includes the rear derailleur RD-M8100, the shifter SL-M8100-R, the chain CN-M8100 and the cassette CS-M8100-12 in the gradation 10-45 or 10-51 t. With the rear derailleur you can choose between clamp and I-Spec EV mounts.
Specifications:
Series: Deore XT M8100 Application: Enduro, All Mountain, Cross Country Gearing: 12-speed (mechanical)
Technical Information - Cassette:
Type: Deore XT CS-M8100-12 (Hyperglide+) Gearing: 12-speed Gradation: 10-12-14-16-18-21-24-28-32-36-40-45 t, 10-12-14-16-18-21-24-28-33-39-45-51 t Sprocket Material: steel (sprocket 1 to 10), aluminium (sprockets 11 and 12) Freehub Body Compatibility: Shimano Micro Spline Spider: 1 (aluminium)
Brake Lever: According to Shimano, only I-Spec EV, but there are adapter solutions for I-Spec (B) or I-Spec II from other manufacturers, e.g. Wolf Tooth.
Chainring: Shimano 12-speed or a chainring made for Shimano Hyperglide+ 12-speed.