Full Shimano XT upgrade kit, everything you need to convert your existing Shimano drivetrain over to the latest wireless XT 12-speed set-up.

Capitalizing on technological advancements introduced with the XTR M9250 rear derailleur,
DEORE XT M8250 features the new SHIMANO SHADOW ES technology with a low-profile
wedge design. Like XTR, the stabilizer unit blends seamlessly into the body of the derailleur,
eliminating edges so it glances off trail obstacles and avoids most rock strikes and impacts on the trail. 

• New Chain Stabilizing Technology – With SHIMANO SHADOW ES technology the
dual spring design creates higher chain tension for better chain wrap and retention.
• Battery Protection – Tucked safely inside the rear derailleur body, the sealed battery
won’t budge, even on rough terrain, but can still be easily removed for charging.

Included in box - 

• XT SW-M8250-R XT Di2 Shift Switch - Band-On or I-Spec EV mount option
• XT RD-M8250 Di2 Wireless 12-Speed Rear Mech - SGS Long or GS Medium cage length option
• Battery and charger

- Long Cage RD-M8250 SGS for use with 10-51T Cassette
- Mid Cage RD-M8250 GS for use with 9-45T Cassette