With the EP810, Shimano is entering the next performance class. The new e-MTB motor delivers up to 100 Nm of torque and 750 watts of peak power, yet weighs only 2.3 kilograms. A magnesium housing with cooling fins is designed to dissipate the heat generated.

More interesting than the raw performance figures is the new automatic system. The EP810 monitors cadence, pedal pressure, speed, and gradient. Based on this data, it automatically determines the appropriate assistance level. When paired with a Shimano electronic shifting system, the third generation of Auto Shift also selects the appropriate gear.

The motor has a few new tricks up its sleeve for technical climbs. “Assist Carry Over” briefly continues to provide assistance when pedal pressure is released—for example, when rolling over a step. “Hill Hold” keeps the bike steady on a slope while pedal assist is active. And with “Lift & Shift,” you can shift into a lower gear while the rear wheel is lifted before continuing your ride.

The system includes a new 720-Wh battery, handlebar or top tube displays, a wireless control button, and a USB-C port. Auto Shift works with electronic shifting systems from the XTR, Deore XT, Deore, GRX, and Cues groupsets. However, the new D-Fly+ wireless protocol is not compatible with previous D-Fly components.