Shimano sets a new benchmark for mountain bike performance with the fully wireless XTR M9250 Di2 system. Designed for the rigors of racing and the chaos of the trail, this cutting-edge drivetrain delivers lightning-fast, ultra-precise electronic shifting with rock-solid reliability. From the reimagined rear derailleur with SHADOW ES technology to customizable shifter ergonomics and the option for E-MTB integration, every detail is engineered for elite-level control and durability. KIT CONTAINS: 1x XTR M9250 Wireless Rear Derailleur 1x M9250 Di2 Shifter Switch 1x Di2 Battery 1x Battery Charger/Cord 1x Quick Link