The Shimano Deore XT Di2 SW-M8150 right shift switch brings precise, effortless electronic shifting to your e-MTB. Designed specifically for Shimano EP801 and EP6 motor-equipped bikes, it integrates cleanly with your brake lever via the i-SPEC EV direct-mount interface — keeping your cockpit tidy and your controls exactly where you want them.

Highlights

• Three-button ergonomic design: Two adjustable rocker switches handle upshift and downshift; a dedicated third button toggles between automatic and manual shift modes.
• Adjustable paddle angle: Rocker switch angle is individually fine-tuned using a 3 mm hex key to match your preferred riding position and hand size.
• i-SPEC EV direct mount: Attaches directly to compatible Shimano brake levers, offering 14 mm of longitudinal adjustment and up to 60° of rotational adjustment for a personalised cockpit fit.
• Light, responsive actuation: Crisp, low-effort button clicks that remain confident and precise over rough terrain — no second-guessing mid-trail.
• E-TUBE PROJECT compatible: Customise multi-shift settings, automatic shift behaviour, and button functions via the Shimano E-TUBE PROJECT app.
• Composite construction: Lightweight body and lever paddles keep weight to a minimum without sacrificing durability.

Electronic Shifting for e-MTB

Unlike mechanical shifters, the SW-M8150 draws power directly from your e-bike's battery, eliminating the need for a separate Di2 battery. Shifting signals travel through the EW-SD300 wire to the Di2-compatible rear derailleur, delivering instant, consistent gear changes regardless of cable tension or trail conditions. Automatic shift mode (programmable via E-TUBE) can even change gears for you as you adjust motor assist levels.

Compatibility & Fit

Compatible with 11-speed and 12-speed Di2 rear derailleurs: RD-M8150-11, RD-M8150-12 (Deore XT Di2), and RD-U6070 (Shimano CUES Di2). Works with 10/11/12-speed cassettes including CS-M9100, CS-M8100, CS-M7100, CS-M6100, CS-LG700, CS-LG600, and CS-LG400 series. Requires a Shimano EP8 EP801 or EP6 motor-equipped e-bike. Mounts to i-SPEC EV compatible brake levers (right side). Connects via EW-SD300 wire (sold separately). Not compatible with standard (non-e-bike) Di2 systems or older STEPS platforms.