Honda RN0 Debuts Shimano EP8 E-Bike Motor
Honda has unveiled the RN0 e-MTB, which uses a new Shimano EP8 motor, and Shimano is returning to the e-bike motor market.
Updated on Nov. 3, 2026 in Electric Vehicles
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Honda revealed the RN0 e-MTB equipped with a new Shimano e-bike motor, designated EP8. The motor is officially still under wraps, though its specifications are listed on Honda's website.
Why it matters
The reveal marks Shimano's return to the e-bike motor market, a segment where it is positioning a new drive system for electric mountain bikes. Early specifications and first ride reviews offer buyers and rivals a first look at its capabilities.
The EP8 motor is rated at 100Nm of peak torque and 750W at peak power, paired with a 720Wh battery. Official specifications are published on Honda's website, but no independent benchmark comparisons have been reported.
The players
Honda
Honda is a Japanese multinational manufacturer best known for automobiles and motorcycles, and it has expanded into electric mountain bikes with the RN0.
Shimano
Shimano is a Japanese manufacturer of bicycle components that has long supplied drivetrains and is now returning to the e-bike motor market with the EP8.
The details
The EP8 includes Auto Shift, which changes gears according to rider cadence, and Auto Assist, which adjusts assistance by measuring trail gradient and rider input. An Assist Carryover function provides power for a short period after pedalling stops, and a full-colour top tube-mounted display can charge external devices via USB-C.
Timeline
November 3, 2026: Article published on the Shimano motor reveal via the Honda RN0.
Roadmap
Shimano's return to e-bike motors follows its earlier motor line, and the EP8 marks the company's re-entry into a segment that has since grown crowded with rival drive systems. The RN0 reveal places Honda's electric mountain bike alongside that renewed Shimano effort in the competitive e-MTB market.
Riders considering an electric mountain bike will need to weigh the EP8's 720Wh battery and 750W peak output against their trail conditions and range needs. Pricing and availability for the RN0 and EP8 have not yet been announced.
The takeaway
The EP8's Auto Shift and Auto Assist features show motor makers focusing on automating gear and assistance choices, which could make electric mountain biking easier for riders of varying skill. Readers planning a purchase should wait for official pricing and availability before committing.
Further reading
For broader context on drive systems and battery packs, explore Electric Vehicles coverage.
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