Shimano Deore XT RD-M8100 12 Speed SGS Long Cage Mountain Bike Rear Derailleur
Shimano Deore XT M8100 Shadow+ Long Cage Rear Derailleur - 12 Speed. If you're looking for precise and fast shifting performance, this derailleur is a solid choice. Shimano's workhorse rear derailleur goes 12-speed!