Shimano’s new EP810 e-MTB system changes its own gears and its own level of motor support as the trail changes, and the drive unit is lighter and stronger than EP801.
- Shimano announced EP810 on 6 November 2026. The DU-EP810 drive unit gives up to 100Nm of torque and 750W peak power and weighs 2.3kg. Shimano’s own figures for EP801 are 85Nm, 600W and 2.7kg.
- AUTO ASSIST, part of the TRAIL+ mode, reads gradient and rider input and changes support on the move. It adds power on climbs to limit wheel slip and front-wheel lift, cuts it on descents, and keeps it low on flat ground to save battery.
- The third generation of AUTO SHIFT works with Di2 versions of XTR, DEORE XT, DEORE, GRX and CUES. Riders can nudge the preferred cadence up or down by three steps on the bike, with no app needed. Shimano calls the two systems together “True Auto”.
- For stalled climbs, Hill Hold uses the motor to stop the bike rolling back in walk mode, and Lift & Shift drops to an easier gear when the rider lifts the back wheel and double-presses the assist-down button.
- Assist Remain smooths support when pedalling becomes uneven over rocks and roots, and Assist Carry Over keeps the motor going briefly after the cranks stop. The length of Carry Over can be adjusted.
- A new SHIMANO CONNECT app handles settings, ride tracking and firmware, which can download during a ride and install later. The new D-FLY+ wireless link is faster and more secure, but it does not work with older D-FLY parts.
- The matching BT-EN827 battery holds 720Wh and weighs about 4.1kg, with 2A and 4A chargers. Shimano has not given prices or dates, because EP810 reaches riders on complete bikes from bike brands.
What it means for e-MTB riders
EP810 takes two decisions off the rider: which gear to be in and how much help to ask for. On a technical climb that means more traction without thumbing the assist button, and on a long ride the motor holds back on the flat to stretch the battery. The drive unit is also 400g lighter than EP801’s, which Shimano says makes the bike easier to handle on technical ground.
Nobody can buy one yet.
EP810 will arrive on new bikes as brands announce them, and anyone upgrading should check part compatibility first, because D-FLY+ (Plus) won’t work with existing D-FLY components.
Quick answers
Can I fit the Shimano EP810 motor to my current e-bike?
Shimano sells EP810 to bike brands for new bikes and has not announced an upgrade route. Its new D-FLY+ wireless link is also not compatible with older D-FLY parts.
How does EP810 compare with EP801?
EP810 gives up to 100Nm and 750W peak from a 2.3kg drive unit, against 85Nm, 600W and 2.7kg for EP801. It also adds automatic assist on top of automatic shifting.
Related: the release radar.
Last Updated on 6 November 2026 by tfk the5krunner
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tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. See the gear tfk uses. ID
