Bring wireless Di2 shifting to your existing 12-speed MTB drivetrain without a full groupset rebuild. The Shimano XTR M9250 Di2 Upgrade Kit — GS pairs the top-of-the-line XTR rear derailleur with a standard clamp-band Di2 shifter switch, battery and charger, making it the most cost-effective path to electronic shifting for riders running a conventional handlebar setup. Suited to cross-country and trail riders who want XTR-level precision on a 9-45T cassette.

Highlights

• Wireless Di2 shifting: Completely cable-free electronics deliver instant, repeatable gear changes with zero cable stretch or maintenance.
• HYPERGLIDE+ compatibility: Works seamlessly with Shimano 12-speed HYPERGLIDE+ cassettes, chainrings, and chains for smooth, fast shifts under load.
• GS medium cage: Optimised for compact 9-45T cassettes, the medium cage sits higher for increased ground clearance on technical terrain.
• Automatic Impact Recovery: The derailleur's SHADOW ES cage pivots away from trail obstacles on impact and returns instantly to its original position — no motor damage, no missed shifts.
• Low-profile SHADOW ES design: Wide-link structure, integrated skid plate, carbon cage plate, and solid pulleys combine to protect the derailleur from rock and root strikes.
• Standard clamp-band shifter: SW-M9250-R mounts to a standard 22.2mm handlebar end — ideal for bikes without I-Spec EV brake lever integration.
• Customisable via E-TUBE app: Adjust shift modes (single, double, hold-down multi-shift), remap buttons, and monitor battery status from your phone.
• Complete kit: Everything needed to upgrade your drivetrain — derailleur, shifter switch, BT-DN320 battery, EC-DN100 charger, and SM-CN910-12 quick-link included.

XTR Di2 Technology

The RD-M9250-GS is Shimano's top-tier wireless rear derailleur for mountain biking. Using the same motor and wireless protocol as the full XTR M9250 groupset, it communicates directly with the SW-M9250-R shifter switch with no wires, no junction box, and no external battery unit. Shifting is instantaneous and consistent regardless of terrain, weather, or rider effort. The integrated BT-DN320 lithium-ion battery charges via the included EC-DN100 USB-C charger and provides approximately 340 km of riding per charge.

Who This Kit Is For

This upgrade kit is designed for riders who already run a Shimano 12-speed drivetrain — XTR M9100, Deore XT M8100, SLX M7100, or Deore M6100 — and want to upgrade to wireless Di2 shifting without replacing cassette, crankset, or chain. The GS cage suits the 9-45T cassette range, and the standard 22.2mm clamp-band shifter suits any flat or drop bar without requiring I-Spec EV integrated brake levers.

Compatibility & Fit

Compatible with all Shimano 12-speed MTB drivetrains including XTR M9100, Deore XT M8100, SLX M7100, and Deore M6100 cassettes, chainrings, and chains. GS (medium) cage supports 9-45T cassette maximum. Shifter clamps to a standard 22.2mm handlebar end (not I-Spec EV). Rear derailleur uses standard direct-mount or band-clamp compatible hanger. Programmable via Shimano E-TUBE Project app (iOS/Android).