Shimano

Deore XT Di2 RD-M8250 Rear Derailleur

What Our Gearhead® Experts Are Saying:

"Whether I’m building a compact 9–45T setup to save weight or going big with a 10–51T cassette, the XT Di2 derailleur handles it all. The shifting is so fast it feels predictive, and the enclosed battery design has survived some seriously sketchy rock rolls without a hitch. I recommend this for any serious trail rider."

From enduro laps to big-mountain trail missions, the Shimano XT Di2 12-Speed Rear Derailleur is engineered to deliver rugged wireless shifting in a smarter, more resilient form. Riders looking for weight savings and pedal efficiency can opt for the mid-cage version, perfectly tuned for 9–45T cassettes. For those who demand maximum range across long climbs and technical descents, the long-cage model pairs seamlessly with the 10–51T HYPERGLIDE+ cassette. Either way, you get a flawless 500% gear range wrapped in a hardened, trail-tested platform.

Shimano’s SHADOW ES technology stabilizes the chain while a re-shaped cage adds ground clearance and impact protection. The derailleur’s robust construction includes a wide-link layout, aluminum plates, and a reinforced pulley system to ensure mechanical longevity. Features like covered pulleys keep mud and rock out of your drivetrain, while the easily removable, internally housed battery stays safe from strikes and shake.

For those pushing their bikes into rowdier terrain, the Automatic Impact Recovery feature gets your derailleur realigned in a flash—keeping your ride smooth, even after rough landings. With lightning-quick wireless Di2 shifting at your fingertips, the trail becomes your canvas, and your drivetrain never skips a beat.