The Shimano XT M8250 Di2 Wireless Upgrade Kit gives you everything you need to take your existing Shimano 12-speed mountain bike into the wireless future. Optimized for impact survivability, the RD-M8250 rear derailleur is the top choice for everyday trail riding, offering unmatched durability and quick, precise shifts. Featuring all-new wireless Di2 shifting, automatic impact recovery, and 23 millimeters of additional ground clearance for a bash-free ride, the M8250 rear derailleur is built to be relentlessly reliable so you are free to focus solely on the trail ahead. Get added weight savings and quicker shifting when pairing the mid-cage with Shimano's 9-45T compact cassette or get the range and robustness to tackle every trail on the mountain pairing the long-cage with a standard 10-51T. The SW-M8250 Di2 Wireless Shifter feels instantly natural out of the box, but can also be molded to fit any hand, thanks to its familiar fit and evolved adjustability design. Multiple shift modes, like hold-down multi-shift and 2-step multi-shift, offer versatility and precision, while the tactile click prevents mis-shifts and a tunable third button allows for additional system tuning or third-party connection. FEATURES: Ergonomic Evolution: Familiar fit and multi-axis adjustability make this Shimano's most natural-feeling shifter yet Fast Action: Precise, lightning-quick wireless shifting activated by Shimano's most adjustable, customizable, and satisfyingly tactile shifting switch Finely Tuned: Assign a function to the programmable third button through the E-TUBE PROJECT app, with full switch and e-bike customization Feature Rich: Short stroke paddles, a two-step double shift or hold-down multi-shift, rubber traction pad, and I-SPEC EV clamp band, all in a tidy, ergonomic package Robust Design: A wide link structure, skid-plate design, durable aluminum plate, and solid pulley add robustness and longevity RD Protection Function: The new Automatic Impact Recovery function instantly returns the derailleur to its original position after impact Shimano SHADOW ES: A slimmer, stronger evolution of Shimano's pioneering chain-stabilizing SHADOW RD+ concept Precise & Clean Wireless Shifting: Ultra-fast shifting and a no-sacrifice 500% gear range Protected Battery: Tucked safely inside an enclosed space, the battery won't budge even in rough terrain, while remaining easily removable for charging Covered Pulleys/Cage: The solid pulley and shielded pulley teeth prevent trail debris from jamming up your flow
