Geared front hub motors for front-wheel-drive conversions and OEM builds: planetary gear
reduction keeps them compact and light (2.5-3.7 kg), so they suit city, folding and trekking
bikes where the front fork carries the motor and the drivetrain stays untouched.
These are wholesale, quote-only motors. Tell us your fork dropout width, wheel size, target
power and brake type and we’ll confirm the matching model, spoking and pricing.
Models & specifications
| Model | Voltage | Rated power | Reduction | Dropout | Wheel sizes | Weight | Brake type | Top speed |
|---|
| GVF-03 | 36V | 250W | 1:4.4 | 85mm | 16”-28” | 2.5 kg | V-brake | 25 km/h |
| GVF-04 | 24V/36V/48V | 200-250W | 1:4.4 | 100mm | 16”-28” | 2.8 kg | V-brake | 25 km/h |
| GRF-02 | 36V | 250W | 1:4.4 | 100mm | 16”-28” | 2.5 kg | Roller brake | 25 km/h |
| GDF-07 | 24V/36V/48V | 250-350W | 1:4.4 | 100mm | 16”-28” | 2.8 kg | V/disc | 25-28 km/h |
| GDF-11 | — | — | — | — | — | — | — | — (spec sheet on request) |
| GDF-15 | 36V/48V | 250-500W | 1:5 | 100mm | 16”-28” | 3.7 kg | V/disc | 25-40 km/h |
All models: IP54 waterproof rating, ≥78% efficiency, ≤55 dB noise, -20 °C to 45 °C operating
range, 24/96h salt-spray tested, shaft cable exit.
Highlights
- Light and compact: planetary gearing packs 250-500W into a hub barely wider than a dynamo.
- Freewheeling: geared design decouples when unpowered, so there’s no magnetic drag when pedaling.
- Drivetrain-independent: front mounting leaves gears, chain and sensors untouched — the simplest conversion layout.
- Brake flexibility: V-brake, disc and roller-brake variants cover classic city bikes through modern trekking frames.
