Keep your bike.
Add the assistance.
Duo turns a compatible road or gravel bike into an electric bike by replacing the wheels and adding a lightweight battery. No need to give up the bike you already know and love.
Keep the bike you chose.
You bought your bike for a reason.
The fit. The handling. The components. The way it feels on the road.
Duo adds electric assistance without replacing the bike itself.
The compact motor sits inside the rear carbon wheel. A removable battery powers the system, while an integrated torque sensor responds to how hard you pedal.
When you want assistance, it is there. When you don't, you are still riding your bike.
Assistance for people who still want to ride.
- 01
Lightweight
The complete Duo system adds approximately 2.5 to 3 kg to your bike.
- 02
Torque sensing
Assistance responds to your pedalling effort for a natural riding feel.
- 03
250W rear hub motor
Compact electric assistance integrated into the rear wheel.
- 04
252Wh removable battery
A 36V 7Ah battery gives you assistance when you want it and removes when you don't.
Built around modern road and gravel bikes.
Duo is designed around the standards used by many modern road and gravel bikes.
- Rear axle
- 12 × 142 mm thru-axle
- Front axle
- 12 × 100 mm thru-axle
- Brakes
- Disc brake
- Freehub
- Shimano HG or SRAM XDR
- Bike
- Compatible road or gravel bike
- Rear rotor
- Duo-specific rotor for the Duo rear hub
- System
- 36V
- Motor
- 250W
- Torque
- 26 Nm
- Sensor
- Integrated torque sensor
Duo uses a specific rear rotor designed for the Duo rear hub. Compatibility matters. Duo won't fit every bicycle, so check your bike before ordering.
Check your bike
Swap the wheels.
Keep the ride.
- 01
Fit Duo
Swap your existing wheels for the Duo carbon wheelset and mount the removable battery.
- 02
Start riding
The integrated torque sensor measures your pedalling input.
- 03
Choose your assistance
Duo adds assistance based on your selected riding mode and how hard you pedal. Programs: Windy, Hilly, Undulating, Flat / Speed and Endurance.
You already have a bike you love.
A complete electric road or gravel bike means starting again.
Duo takes a different approach.
- Keep your frame.
- Keep your fit.
- Keep your position.
- Keep the components you chose.
Add the assistance.
Keep the bike.
Change the ride.
Assistance when it makes sense.
Climbing
Take some of the sting out of long or steep climbs.
Wind
Add assistance when a headwind turns the ride home into the hardest part of the day.
Group rides
Stay involved when fitness, recovery or different abilities start creating gaps.
Longer days
Use assistance strategically to help extend the rides you already enjoy.
Still your bike.
Still your ride.
Duo was created for cyclists who still want to ride.
The motor doesn't replace your effort. The torque sensor responds to it.
Pedal harder and the system responds. Ease off and the assistance follows.
The idea is simple. Help when you want it, while keeping the experience centred on riding a bike.
Keep the bike
you love.
See whether your road or gravel bike is ready for Duo. Or head back to the Duo home page.