The Shimano STEPS EP8 DU-EP801 (2nd Generation) is the flagship mid-drive motor in Shimano's e-MTB lineup — refined, lighter, and more connected than its predecessor. Delivering 85Nm of torque in a compact 2.6kg magnesium housing, it provides natural, responsive assist across a wide cadence range while running quietly enough to let you focus on the trail. Designed for serious e-MTB riders who demand high performance without compromising on feel or reliability.

Highlights

• 85Nm of torque, 250W rated output: powerful assist delivered smoothly across a broad cadence range for confident climbing and technical terrain.
• Lightweight magnesium housing: at 2.6kg the EP801 is among the lightest motors in its class, keeping your bike nimble and balanced.
• Expanded connectivity — CAN & ACC ports: connect third-party accessories, lights, sensors, and displays directly to the motor for a cleaner, more integrated build.
• Auto Shift & Free Shift (with Di2): when paired with XT HyperGlide+ or LinkGlide Di2, the system can shift automatically based on speed and cadence, or shift gears freely while coasting — even without pedalling.
• Improved thermal management: redesigned heat dissipation keeps performance consistent on long climbs without thermal throttling.
• Low noise operation: refined motor internals make for a quieter, more natural riding experience on the trail.
• E-TUBE PROJECT customisation: use Shimano's E-TUBE PROJECT app to fine-tune assist profiles, enable FINE TUNE mode, and update firmware.

Assist Modes

The EP801 offers three rider-selectable assist modes — ECO, TRAIL, and BOOST — covering everything from maximum range cruising to full-power technical climbing. A WALK ASSIST mode is also available for pushing the bike through tight terrain. The 2nd generation update improves the intelligent walk assist, bringing it in line with Di2-connected systems for smoother, more controlled walk-mode performance.

Second Generation Updates

The 2nd Generation EP801 carries all the software and hardware refinements introduced across the EP8 platform update: compatibility with Shimano's second-generation battery management system (BMS), new CAN and ACC accessory ports, and support for XT HyperGlide+ Di2, LinkGlide Di2, and CUES Di2 drivetrains. These additions make the EP801 the most versatile and future-ready motor Shimano has produced for e-MTB.

Compatibility & Fit

The DU-EP801 is a mid-drive unit designed for e-MTB framesets built to the Shimano STEPS EP8 motor specification. It is compatible with Shimano STEPS EP8-series batteries (504Wh and 630Wh) and requires the 2nd generation battery management system. Drivetrain compatibility includes Shimano 12-speed LinkGlide, HyperGlide+, and HyperGlide+ Di2 systems. Displays compatible with the EP801 include the SC-EM800 and EN600. Crank interface uses a Shimano STEPS-specific 24mm spindle. Consult your frame manufacturer to confirm EP801 fitment for your specific frameset.