Shimano XT RD-M8100 12 Speed Rear Derailleur - Long Cage - 12 Speed Heavy/Bulky A fully repairable and adjustable

A fully repairable and adjustable clutch that can be turned on or off

They also have excellent breathability that allow you to stay dry and cool so you can climb in comfort and descend with confidence

Helps ensure you can train in a clean and healthy environment

If you're looking for the best possible protection

Shimano XT RD-M8100 12 Speed Rear Derailleur - Long Cage - 12 Speed Heavy/Bulky A fully repairable and adjustableThe M8100 12 speed rear derailleur offers fast and precise shifts on any trail. It features a low profile design to minimise it catching on stray branches or rocks. It also features Shimano's adjustable clutch system and added bump stops for increased chain security and quieter operation even on the bumpiest terrain. Designed for use on Shimano's 12 speed wide range cassette, it can handle a massive 10 51T range, and comes with a larger 13T pulley for