Go fully wireless with the Shimano Deore XT Di2 GP-M8250 Upgrade Kit — everything you need to convert an existing 12-speed Hyperglide+ drivetrain to precise, cable-free electronic shifting in a single box. The long-cage SGS derailleur handles wide-range cassettes up to 51T, while Automatic Impact Recovery and SHADOW ES chain stabilisation keep performance on point when the trail gets rough. Ideal for trail and enduro riders wanting Di2 reliability without a full groupset swap.

Highlights

• Complete upgrade kit: RD-M8250-SGS derailleur, SW-M8250R band clamp shifter, BT-DN320 battery, EC-DN100 charger, and SM-CN910-12 quick link included.
• Fully wireless Di2: Bluetooth Low Energy and ANT Private wireless — no cables, no housing, no cable stretch ever again.
• Automatic Impact Recovery: The motor instantly repositions the derailleur after a rock or root strike, keeping you shifting smoothly on technical lines.
• Long-range capability: SGS long cage supports 10-51T wide-range cassettes and a 500% effective gear range for maximum climbing versatility.
• SHADOW ES chain stabilisation: Dual-spring mechanism reduces chain slap and prevents drops on rough descents without a separate chain guide.
• Extended battery life: BT-DN320 battery rated for 1,000–2,000 km (30–49 hours) of riding; charges via USB-C with the included EC-DN100 charger.
• Ergonomic SW-M8250R shifter: Multi-axis reach and angle adjustment, hold-down multi-shift, 2-step double-shift, and a programmable third button via the E-TUBE PROJECT app.
• Ground clearance: Wedge-shaped cage profile adds 23 mm of additional ground clearance over the previous XT generation.

Wireless Shifting Reimagined

The RD-M8250-SGS communicates via Bluetooth Low Energy and ANT Private, pairing directly with the SW-M8250R wireless shifter — no junction box or wiring harness required. Shift mode customisation, firmware updates, and third-button assignment are all managed through the free Shimano E-TUBE PROJECT app (iOS and Android). The result is a completely clean cockpit and a drivetrain that adapts to your riding style without a cable in sight.

Built for Trail Abuse

Shimano's Automatic Impact Recovery detects when the derailleur has been deflected by trail debris and uses the motor to snap it back into position — without the rider even noticing. The wedge-shaped cage profile delivers 23 mm more ground clearance than the previous generation, while a wide-link structure, aluminium skid plate, and covered pulleys shield the derailleur from rocks and roots. SHADOW ES dual-spring chain stabilisation keeps the chain firmly on the ring through the roughest descents.

Comfort-First Ergonomics

The SW-M8250R Rapid ES shifter attaches via a standard 22.2 mm clamp band, making it compatible with any handlebar without requiring Shimano I-SPEC brake lever integration. Four-way reach and angle adjustment puts the paddle exactly where your thumb naturally rests. Short-stroke paddles allow rapid single shifts, hold-down multi-shift dumps multiple gears in one motion, and the programmable third button can be assigned to any Di2 function you choose.

Compatibility & Fit

Designed for Shimano 12-speed Hyperglide+ drivetrains. The RD-M8250-SGS supports cassettes from 10-51T (total capacity 41T) and mounts to a standard B-screw derailleur hanger — compatible with non-UDH framesets. The SW-M8250R uses a 22.2 mm band clamp, suitable for any standard mountain bike handlebar. Your existing 12-speed cassette, chain (quick link included), chainring, and crankset are retained — only the rear derailleur, shifter, battery, and charger are replaced. Compatible with XTR, Deore XT, SLX, and Deore 12-speed Hyperglide+ cassettes and chains.