Description
250W MTX E-Bike Conversion Kit – Rear Hub Motor for 26", 27.5" and 29"
The 250W conversion kit with a brushless gearless direct-drive motor is the ideal starting point for any bicycle-to-e-bike conversion: quiet, efficient, compatible with 36V/48V, and within the legal pedal-assist power limit in Romania and across the EU.
The 250W brushless gearless motor is the most accessible option in the All4eBikes range and, at the same time, one of the most reliable: no gears to wear out, no brushes to maintain, just a purely magnetic force transfer between stator and rim. Available in three wheel sizes – 26", 27.5" and 29" – the kit installs without frame modifications and without special tools, making it suitable for both a first DIY project and riders who want an efficient, discreet commuter.
What's Included in the 250W Kit
- 250W brushless gearless direct-drive motor, built into the rear rim
- 36V/48V controller with dual Hall / non-Hall mode
- LCD display with speed, battery level and ride data
- Full-twist throttle
- Pedal Assist Sensor (PAS) for natural pedalling assistance
- Brake levers with automatic motor cut-off sensor
- Complete wiring harness and mounting hardware
Available for 26", 27.5" and 29" wheels. Standard 135mm rear axle, compatible with most city, MTB and trekking bike frames.
250W Kit Technical Specifications
Motor Parameters
Controller Parameters
Compatibility
Direct-drive motor: no gears, no wear
The gearless direct-drive motor has no gears or moving mechanical parts – force is transferred magnetically straight from the stator to the rotor. The result: completely silent operation under 60 dB, zero mechanical wear, and a practically unlimited service life. The sealed casing protects the internal components from dust, moisture and road grime, making it suitable for year-round use in any weather.
Dual-mode controller – extra reliability
The controller runs primarily on Hall sensors for smooth start-up and precise throttle response. If the sensors fail, it automatically switches to non-Hall mode, and the motor keeps running without interruption. The brake levers cut power to the motor instantly for safe stopping.
Who It's For
Urban Commuting
A quiet, efficient kit for daily commutes – discreet on the road and easy on battery consumption.
First DIY Conversion
Simple installation with no special tools required, ideal for anyone building their first e-bike from scratch.
Leisure Riding
Smooth pedal assistance for longer rides, with less fatigue and extended battery range.
Recommended Battery
The 250W kit is compatible with 36V and 48V, recommended for capacities between 10Ah and 20Ah. For balanced range on a daily commute, we recommend a 36V or 48V Downtube battery from our range – mounted on the down tube, with built-in USB port and key-lock security. For higher capacities or a triangle format, see all options in the eBike Batteries category.
Parts and Other Kits
Spare parts, alternative controllers and accessories are available in the eBike Parts section. If you need more power for hills or heavier loads, the next step up in the range is the 500W kit, or compare all options across the conversion kits range – from 250W up to 3000W.
