The Shimano DEORE XT M8250 Di2 Upgrade Kit is a complete wireless shifting solution designed to elevate drivetrain performance for modern trail and enduro riders. This comprehensive kit includes your choice of the M8250 GS (mid-cage) or SGS (long-cage) Di2 rear derailleur, the M8250-IR RAPID ES shifter switch (I-SPEC EV), BT-DN320 Di2 battery, EC-EN100 charger, and the SM-CN910 12-speed chain. The M8250 derailleur delivers wireless precision, robust durability, and automatic impact recovery in a compact form, with the GS version optimized for lightweight 9-45T setups and the SGS option built for wider 10-51T cassettes. Both feature Shimano’s SHADOW ES stabilization, covered pulleys, and refined geometry to minimize trail interference.

The M8250 Di2 shifter enhances cockpit control with programmable shift modes, short-stroke tactile paddles, and a customizable third button via the E-TUBE PROJECT app. Ergonomic and intuitive, it provides seamless integration with Shimano’s wireless platform for 11- and 12-speed systems. The BT-DN320 battery fits securely inside the derailleur, offering a clean and protected power source with long-lasting charge life. Its compact, durable construction ensures reliability over aggressive terrain. Charging is handled by the EC-EN100, Shimano’s dedicated charger for the Di2 wireless platform, designed for quick, efficient recharging with a simple connection and compact form factor

Completing the kit is the CN-M9100 12-speed chain, renowned for its smooth, silent performance and SIL-TEC treatment for low friction and long wear. Engineered for Hyperglide+ systems, this chain improves shift speed and chain retention with chamfered plates, optimized plate shape, and a precise Quick Link system. It’s designed to handle extreme chain angles and maintain efficiency and quiet operation across the full range. Together, these components deliver a race-proven, trail-ready wireless drivetrain that’s as durable as it is refined.