SKU: 02

250W Rear Hub Motor E-Bike Conversion Kit MTX

All4ebikes
[1]
All4ebikes
Size: 26in
Kit-ul de conversie nu contine baterie. Daca nu aveti deja baterie, va rog sa alegeti de aici una.
RON 1,285.12
RON 1,382.76
Kitul contine deja display SW900 inclus. Aceasta optiune este pentru upgrade de la SW900 la UKC1+
RON 400.72
Limited stock
RON 1,233.48 RON 1,522.81 valid until 30 Sep
Free shipping

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.

250W 36V / 48V Rear Hub 26″ / 27.5″ / 29″ Direct-Drive ~7 kg

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

Rated power250W
Motor typeBrushless DC
ConstructionGearless / Direct-Drive
PositionRear hub
Noise level< 60 dB
CasingSealed, weatherproof
Wheel sizes26″ / 27.5″ / 29″

Controller Parameters

Compatible voltage36V / 48V
Operating modeDual Hall / non-Hall
PAS sensorIncluded
ThrottleFull-twist
DisplayLCD included
BrakingMotor cut-off sensor

Compatibility

Recommended battery10Ah – 20Ah
Battery voltage36V / 48V
Estimated speed 36V~25 km/h
Estimated speed 48V~30–35 km/h
Rear axle135mm standard
Kit weight~7 kg

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.

Worth knowing: 250W is the legal limit for pedal-assist e-bikes in most EU states, including Romania – this kit keeps you fully compliant without sacrificing efficiency on daily routes.

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.

Frequently Asked Questions About the 250W Kit

What range does the 250W kit offer?
Range depends on the battery, total weight and terrain. With a 10–15Ah battery, estimated range is roughly 40 to 70 km per charge cycle under normal urban riding conditions.
Can I use this kit with a 48V battery?
Yes, the controller is dual-compatible with 36V and 48V. At 48V, estimated top speed increases to around 30–35 km/h, compared to ~25 km/h at 36V.
Is it legal to ride this kit on public roads in Romania?
250W with pedal assistance falls within the legal limit for e-bikes in Romania and most EU states, without requiring registration or a licence.
How complicated is the installation?
Installation takes 2–3 hours on average and requires no special tools – standard Allen keys, an adjustable wrench and a bike pump are enough.
Will this kit fit any bicycle frame?
The kit is compatible with most standard frames with a 135mm rear axle. Check your axle size and brake type (disc or v-brake) before ordering to ensure a safe fit.

Details

SKU
02
Categories
Weight
7 kg
Brand
Motor Type
Rear Hub Motor
Compatible voltage
36V, 48V
Power
250W

What customers are saying

5 out of 5 stars
Based on 1 votes
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Do you own or have used the product?
Post review
A
Andreea
15 Jun
Kit-ul de 250W este foarte eficient si usor de instalat! Un magazin de încredere pentru pasionații de biciclete electrice. Am cumpărat mai multe componente și de fiecare dată produsele au fost conforme, bine ambalate și livrate rapid. Raport calitate-preț foarte bun și comunicare excelentă cu echipa de suport. Recomand cu plăcere.