Shimano | Xtr Rd-M9250 Sgs Rear Derailleur For 51T 12 Speed

Shimano XTR RD-M9250 GS Rear Derailleur for 51TThe wireless future has arrived Shimano's new XTR M9250 brings fully wireless shifting to the riders in the form of the highly acclaimed XTR series. Built for riders running the 9-45t cassette, this XTR M9250 GS rear derailleur combines a new fully wireless Di2 technology with robust design, including an impact-deflecting shape, Automatic Crash Recovery, and a simple covered-pulley solution to protect the pulleys from trail debris. The new Shadow ES system is the next generation of Shadow chain management technology, with a slimmer design that doesn't skimp on chain retention. The HYPERGLIDE+ and Di2 technologies combine to create an ultra-precise electronic shifting system that's tougher than ever, all without the wires. Features All-new fully wireless system bringing the world of wireless shifting to Shimano XTRSGS long-cage rear derailleur accommodates a 10-51t cassette, with a robust impact-deflecting shape, and covered pulleys for improved protection from trail debris Wedge Shape rear derailleur helps to shield the derailleur from impacts while the RD Protection Function instantly returns the derailleur motor to its original position after an impact Shimano Shadow ES system is a slimmed-down version of the legendary Shadow chain stabilization system HYPERGLIDE+ and Di2 technologies combine to provide riders with some of the quickest, most precise shifting available Battery Not Included Specifications Cassette Range Compatibility10-51 tooth Drivetrain Speeds12Connectivity Wireless Di2 | Shimano | Xtr Rd-M9250 Sgs Rear Derailleur For 51T 12 Speed