Shimano Steps EP801 Review: Updated Performance & Quieter Ride
Quick answer
The Shimano Steps EP801 is a refined mid-drive motor that replaces the EP8 (DU-EP800) for e-MTBs and long-distance touring bikes. It retains the same peak torque (85 Nm) but delivers noticeably smoother pedal assist, quieter operation, and deeper integration with Shimano’s latest Di2 shifters and battery systems. If you’re building a new electric mountain bike or upgrading a frame specifically for Shimano’s ecosystem, the EP801 is the current gold standard for natural-feeling, reliable e-MTB power. For touring and commuting, its improved efficiency and whisper-quiet profile also make it a strong contender—provided you pair it with the right battery and drivetrain.
Comparison framework: EP801 vs. EP8
At first glance the EP801 looks like a minor refresh: same form factor, same 85 Nm peak torque, and similar weight (around 2.8 kg). The real differences are in feel, sound, and smart-system compatibility.
Torque delivery
The EP8 was often criticized for a slightly abrupt power onset when the rider started pedaling hard—a “snap” that could unsettle traction on loose climbs. The EP801’s revised motor control firmware smooths that initial engagement. In practice, this means cleaner technical climbing and more predictable power when you’re feathering the throttle on tight switchbacks. It still provides plenty of punch (up to 600% assist in Boost mode), but the transition feels linear rather than digital.
Noise reduction
Shimano added sound-dampening materials around the reduction gear housing and optimized the gear profile. The result is a motor that, in Eco mode, is nearly inaudible at moderate speeds on gravel paths. In Trail or Boost mode you can hear a quiet whir, but it’s far less intrusive than the EP8’s characteristic humming buzz. For riders who value stealth on singletrack or quiet early-morning commutes, this alone justifies the upgrade.
Efficiency and range
The EP801’s control algorithm uses more refined current mapping, particularly in the lower cadence ranges. Independent tests (and owner reports) show a consistent range improvement of 5–8% over an EP8 under the same battery and riding conditions. That small gain can translate to an extra few miles on a long trail ride, or the confidence to keep the bike in Trail mode longer without worrying about range.
D2 and battery compatibility
The EP801 is designed to work seamlessly with Shimano’s second-generation Di2 shifters (e.g., the XT Di2 rear derailleur) via the E-Tube app. It also supports the newer BT-EN806 and BT-EN805 batteries, which offer higher capacity (up to 630 Wh) and improved thermal management. Older EP8 batteries (BT-EN800, BT-EN801) are mechanically compatible but may limit the motor’s peak power output in some programming modes.
Verification step before you buy: Check the connector on the motor cable inside your frame. The EP801 uses a rectangular 6‑pin plug. If your frame has a round 8‑pin connector (common on early EP8 bikes), you’ll need an adapter harness or a frame‑side cable replacement. Measure the distance between mounting bosses as well—the EP801 shell is identical to the EP8, but some frames have slight tolerance shifts that can cause a tight fit. Confirm with your frame manufacturer’s compatibility drawing before ordering.
Best-fit picks by use case
For trail and enduro e-MTB riders
If you regularly ride steep, technical terrain and rely on precise power modulation to stay in control, the EP801 is the current best option in Shimano’s line. The smooth torque delivery and reduced noise let you focus on line choice rather than managing a jerky motor. Pair it with the 630 Wh battery and a 12‑speed Di2 drivetrain for the most integrated smart-shifting system available today.
For long-distance touring and bikepacking
The EP801’s efficiency gains are modest but meaningful—especially if you ride with a heavy load and want to minimize recharge stops. The quiet motor also makes a difference on multi‑day trips where noise fatigue accumulates. Tourers should note that the motor works best with a larger chainring (38–42 T) to keep cadence in the efficient zone at steady touring speeds. Shimano’s E-Tube app allows you to tweak assist profiles for more gradual output, which can extend range further on mixed‑terrain tours.
For commuters and fitness riders
While the EP801 is overkill for most pavement‑only bikes (a hub motor or lighter mid‑drive like the Steps E7000 would suffice), it offers one unique advantage: the quietest ride of any high‑torque Shimano motor. If you commute on mixed surfaces or need occasional trail capability on the way home, the EP801 justifies the premium. Just be aware that its peak output is tuned for off‑road cadences (60–90 rpm), so low‑cadence grinding at stoplights can feel less efficient than a Bosch Performance Line City motor.
Trade-offs to know
- Cost premium. The EP801 is more expensive than the EP8, and you may need to buy a new battery or Di2 components to fully benefit from its smart-system features. If you already have an EP8 bike with older batteries and no interest in electronic shifting, the upgrade is hard to justify.
- Not a power increase. Peak torque hasn’t changed. Riders who want more raw grunt (e.g., 95 Nm from the B Bros Ultra or Bosch Performance CX) should look elsewhere. The EP801’s advantage is in feel and integration, not brute force.
- Ecosystem lock‑in. Once you invest in Shimano’s new battery, charger, and electronic shifting, switching to another brand becomes expensive. If you value manufacturer neutrality, the EP801 is a commitment.
- Tuning requires know‑how. The E-Tube app is powerful, but its menus aren’t intuitive for casual users. You may need to spend a few rides adjusting assist profiles to match your weight and terrain.
- Realistic mismatch: firmware tuning can cause power cutouts. If you install the EP801 in a frame originally designed for the EP8 and skip a full E-Tube firmware update, the motor may run fine for a few miles then cut power under sustained load. This happens because the battery management system isn’t aligned with the EP801’s higher transient current draw. Always update both the motor firmware and the battery BMS firmware (if supported) before your first ride.
Related Articles
- Shimano EP8 vs EP801: What Changed in the Next-Gen STEPS Motor?
- Shimano STEPS E-Bike Motors: EP8, EP801, EP6 & Complete Model Comparison
- Bosch Performance CX vs. Shimano Steps E8000: Which is the Best E-Bike Motor?
Ryan Williams has spent over 8 years testing, repairing, and writing about electric bikes. He has personally ridden and reviewed 150+ e-bike models from brands like Lectric, Aventon, Rad Power, Super73, and dozens more.
Before founding EBIKE Delight, Ryan worked as a bicycle mechanic for 5 years at independent bike shops across California, where he specialized in e-bike conversions and electrical system diagnostics. He holds a Certificate in Electric Vehicle Technology from the Light Electric Vehicle Association (LEVA).
Ryan’s work has been cited by Electric Bike Report, Electrek, and BikeRumor. When he is not testing the latest e-bike on California backroads, he is in his workshop tearing down batteries and controllers to understand what makes them tick — and what makes them fail.
Areas of Expertise
E-bike performance testing and real-world range verificationBattery diagnostics, charging best practices, and safetyBrand comparisons: Lectric, Aventon, Rad Power, Super73, and moreError code troubleshooting across major e-bike systemsE-bike laws, registration, and compliance by state
Ryan believes every rider deserves honest, hands-on information — not marketing hype.