Shimano XTR Di2 RD-M9250 Rear Derailleur

Shimano XTR Di2 RD-M9250 rear derailleurs were built to intelligently withstand common trail impacts and shift smoothly through adaptive 12-speed cassettes with wireless functionality that can reliably handle the needs of both Enduro and XC riding. Designed with a robust trail-ready configuration, Shimano XTR Di2 derailleurs incorporate a wide link structure, skid-plate design, durable carbon plate, and solid pulley for durability and longevity. A revolutionary wedge shape also helps to avoid the brunt of more impacts, deflecting debris off smoothly when struck. Adaptive, RD Protection retreats derailleur position when hit, then instantly restores its position after impact. Shadow ES represents Shimano's slimmest, strongest evolution of their dominant chain-stabilization concept, keeping chains properly retained through turbulent riding. Wireless Di2 functionality acts instantly in response to input from XTR Di2 Shift Switches, and glides effortlessly through HYPERGLIDE+ cassettes with smooth precision. Enduro riders can expect total trail functionality when pairing the Long Cage SGS version with 10-51T cassettes; weight-conscious XC racers can combine the Mid Cage GS offering with a 9-45T cassette to achieve a lighter-weight compact drive.

Note: Rear derailleur does not include battery.

Features:

• Wireless electronic derailleur for Enduro and XC
• Robust wide link structure incorporates carbon plate and solid pulley
• RD Protection Function retreats derailleur when struck and restores position instantly
• Shadow ES evolves chain stabilization with a slimmer, stronger iteration
• Wedge Shape avoids more impacts, glancing off rocks or trail debris
• Mid-Cage GS option combines with 9-45T cassette for compact drivetrain configuration
• Easily-removed system battery tucks safely within closed space for total security

Specifications:

• Speed: 12 Speed
• Shifter Compatibility: Shimano Di2
• Shift Mechanism: Electronic (Wireless)
• Max. Tooth: 45T (GS), 51T (SGS)
• Min. Tooth: 9T (GS), 10T (SGS)
• Chain Wrap Capacity: 36T (GS), 41T (SGS)
• Cage Material: Carbon
• Chain Retention: Shadow ES
• Color: Black