Serial 1

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Powered by Harley-Davidson®

About Serial 1

When Harley-Davidson’s founders put power to two wheels and created their first motorcycle in 1903, they changed the way the world moved forever. Now, more than a century later, Serial 1 Cycles, Powered by Harley-Davidson, has created an eBicycle that’s designed to change the way the world moves again.

Inspired by the entrepreneurial vision of Harley-Davidson’s founders—and the revolutionary impact of their oldest-known motorcycle, affectionately referred to as “Serial Number One—Serial 1 Cycles was created for the sole purpose of delivering innovative eBicycles that make every ride an adventure. Combining Harley-Davidson’s world-class product development capability with the agility of a start-up brand, Serial 1 Cycles offers premium eBicycles guided by intelligent, human-centered design and crafted using the most advanced bicycle technology available, to create the easiest and most intuitive way to experience the fun, freedom and instant adventure of riding a pedal-assist electric bicycle.



Our integrated battery and mid-drive motor centralize mass and lower the center-of-gravity for superior handling; the bike just disappears beneath you.


Internally routed brake lines, electrical wiring and integrated front-and-rear LED lighting deliver sleek styling.


With intelligent auto shifting on select models, a maintenance-free belt drive, and self-adjusting hydraulic brakes, you don’t have to think about the bike; you can just enjoy the ride.


Full speed ahead! The RUSH/CTY SPEED model is the quickest way to navigate any city. Providing electric assistance up to 28 mph, RUSH/CTY SPEED is designed to bring adventure to errands, excitement to your commute, and more capability to any cycling situation.


The sophisticated commuter. The RUSH/CTY model is a premium, full-featured eBicycle designed for more convenient and fun commutes. The easiest, most intuitive way to get anywhere, without breaking a sweat.  Up to 20 mph.


An all-access ride to wherever you want to go. The RUSH/CTY STEP-THRU is a premium eBicycle loaded with features and exceptional style. The step-thru frame makes it easy to get in the saddle without swinging a leg high over the seat, and to stand flat-footed over the bike at a stop – an essential urban-commute feature for some riders.  Up to 20 mph.


The ultimate urban playbike. The MOSH/CTY model is a pedal-assist eBicycle designed for trend-setting adults seeking a stylish and flexible way to move around their fast-paced urban environments. Fly faster and farther, solo or in a pack. It’s quick, nimble and an absolute ripper.  Up to 20 mph.

Leveraging Harley-Davidson’s world-class product development capability and leadership in electric-powered vehicles, Serial 1 Cycle Company presents eBicycles guided by intelligent, human-centered design and crafted using the most advanced bicycle technology in the world.

ALUMINUM FRAME: Frames and forks are constructed from welded hydroformed aluminum to be light and rigid, with geometry designed to deliver:

• Nimble, agile handling in urban environments

• Confident control and comfort on bicycle paths and rural backroads.


Eco Mode for a gentle amount of assistance in flat-and-favorable conditions.

Tour Mode for the optimal blend of assistance and battery economy under mixed riding conditions.

Sport Mode for pronounced assistance away from corners or over rolling hills.

Boost Mode for confronting a steep hill, a strong headwind, or any other condition requiring a sustained boost.

WALK ASSIST: A push-button ‘‘walk-assist’’ function located on the handlebar controls provides a low level of forward motion to help easily maneuver the eBicycle at walking speeds, especially if there is ever a need to push it up a hill.

BELT DRIVE: Gates Carbon Drive belt is smooth, quiet and maintenance-free. It requires none of the frequent lubrication or adjustment of a chain-drive system. It never gets greasy or messy.

AUTO-SHIFTING TRANSMISSION: Enviolo AUTOMATiQ intelligent automatic transmission is an electronically controlled CVT (Constantly Variable Transmission) rear hub that automatically adjusts the gear ratio to maintain the rider’s optimal, personalized pedaling cadence as terrain or speed changes. Fully-enclosed and maintenance-free, it’s available on select models.

HANDLEBAR CONTROLS: Ergonomically arranged thumb-and-forefinger controls on all models allow the rider to turn the eBicycle on and off, change ride modes, switch the integrated headlight on and off, and engage walk-assist without lifting a hand off the handlebar.

SERIAL 1 APP COMPATABILITY: A smartphone with the Serial 1 App, when paired by Bluetooth with the Serial 1 eBicycle, will provide access to key rider data. The Serial 1 App will launch in Spring 2021.

HYDRAULIC DISC BRAKES: Front and rear hydraulic disc brakes utilize 203mm brake rotors designed to deliver confident braking performance in most riding conditions --- essential for faster-moving eBicycles and all-weather commuting.

INTERNAL ROUTING: Brake lines and electrical wiring are routed through the frame, promoting longer life and less maintenance through protection from the elements and clean, snag-free styling.

INTEGRATED BATTERY: The lithium-ion battery is integrated into the lower frame for sleek style and convenient removal for off-the-bike charging. It can also be charged on the bike through a charging port conveniently located on the lower frame.

MID-MOUNTED MOTOR: The Brose S Mag mid-mounted motor produces 90Nm/66 ft. lb. torque, plenty of power assistance to provide a quick launch from a standing start and to give the rider the ability to conquer challenging hills. Mid-mount placement near the crank lowers the center of gravity and centralizes mass to optimize vehicle handling, while an electronic torque sensor automatically registers the pressure the rider applies to the pedals and instantly provides a commensurate amount of electric assistance, greatly simplifying use for all riders. No throttle or other action is required-----just pedal and go.

INTEGRATED LIGHTING: A bright LED headlamp mounted on the handlebar stem illuminates the path ahead and can make the rider more conspicuous after dark. Bright combination LED tail and brake lights integrated into the frame dropouts are designed to make the bike more visible from the rear. A distinctive LED front signature light pays homage to the shape of the classic headtube badge on Harley-Davidson’s original bicycles and illuminates whenever the eBicycle is powered up.

INTELLIGENT SIZING: Frame geometry is optimized for each frame size to maintain a comfortable riding position and consistent handling across all rider sizes, regardless of rider height. The desired riding posture for the city bikes is upright to maximize comfort and awareness of the rider’s surroundings. Both the frame geometry and contact points were evaluated, to make sure that our size range is well suited to nearly every customer.

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