🔋🚲 250W Cassette Hub Motor Conversion Kit – Plug & Play, Road-Legal Mode
👋 Hello, Welcome to E Bike Power UK.
We offer one of the best 250W cassette hub motor conversion kits available for bikes with rear dropouts of ≥135 mm and HG cassette drivetrains (1–11 speed). This kit is designed to be lightweight, compact, strong, and easy to install, while still delivering excellent performance for its class. ⚡ Actual performance depends on rider weight, terrain, and weather.
Typical performance (private land): ~20–25 mph top speed (depends on rider weight/terrain) and ~15–30 miles per charge. For more torque and higher top speed, use a 48V or 52V battery.
UK public roads: Street Mode limits assist to 15.5 mph (25 km/h) with pedal assist only.
📦 What’s in the Box
- ✅ All plug-and-play waterproof connections
- ✅ 250W brushless geared rear hub motor (HG cassette body, fits 135 mm dropout)
- ✅ HG-style cassette fitment compatible with 1–11 speed setups
- ✅ All-black MTX39 lightweight double-wall aluminium rim
- ✅ Disc Brakes ONLY
- ✅ 36 stainless spokes (black)
- ✅ SW900 colour display
- ✅ 17A DC Moto controller (36V / 48V / 52V), XT60 female
- ✅ 3-in-1 data cable
- ✅ Slim Line half-twist throttle + left-hand grip (stealthy look)
- ✅ VL-12 Pedal Assist Sensor (PAS)
- ✅ Waterproof controller box
- ✅ Headlight (controlled via the display)
- ✅ Tyre levers, cable wrap, cable ties
- ✅ Waterproof motor extension cable
⚖️ Road-Legal Mode (UK)
- 🔘 Hold the down button on the display to activate road-legal mode
- 👣 “Walk/Person” icon shows when active
- 🚴 Limits PAS to 15.5 mph (25 km/h) and disables the throttle
- ✅ To be road-legal, use PAS only with the throttle off
🔋 Battery Compatibility & Options
This kit is fully compatible with 36V, 48V, and 52V batteries, giving you flexibility depending on the performance you’re looking for.
- ⚡ 36V – Smooth, efficient riding with moderate speed
- ⚡ 48V – Ideal balance of power and range (recommended)
- ⚡ 52V – Increased torque and higher top-end performance
You can purchase this kit on its own if you already have a compatible battery, or choose to buy it with our matched 48V battery for a complete plug-and-play setup.
If you’re looking for more range or upgraded performance, you’re free to select any compatible battery from our store to suit your build.
🔋 Battery Bundle (Optional)
Add a battery at checkout and receive:
- 🔹 48V 14Ah Poly Downtube Battery + 2A UK charger, rubber pads, 2 keys, XT60
- 🔹 Built using Grade A original manufactured cells for high performance, reliability, and long-lasting longevity
⚙️ Cassette Options
We can install a 7/8/9/10-speed cassette if you add one to your order from our store.
ℹ️ 7-speed requires a 2.5 mm spacer.
🧩 Use Without Certain Accessories
- 🏁 You may run throttle-only or omit PAS on private land/off-road
- ⚠️ For road-legal use, PAS must be used and the throttle disabled
🛡️ Warranty
- 🧰 3-month warranty on the kit
- 🔋 12-month warranty on the battery (if purchased)
🧰 Optional Extras
Prefer a full twist throttle? 🌀 Leave a note at checkout and we’ll swap it in.
🛠️ Tips & Tricks
- 🔧 Chain whip & cassette tool required (available in our store)
- 🧲 Ensure the axle seats fully in the dropouts; tighten both 19 mm nuts
- 🛑 Remove the transport spacer before installing the disc rotor
- 🧴 Lightly grease the cassette spline before install
- 🛞 Use slime inner tubes to reduce punctures
- 🧷 Remove the brake caliper for easier wheel installation
- 🔌 If the wheel doesn’t spin freely, check phase wires aren’t touching
- 🧵 Apply thread-lock to rotor bolts to protect the motor cable
- 🗜️ Recheck spoke tension after initial rides
- 🦾 Fit a torque arm if possible for added safety
🚚 Shipping
- 🔎 Orders tested & processed within 24 hours of cleared payment
- 📦 Couriers: FedEx, DPD, UPS, Parcelforce, Royal Mail (size & location dependent)
- 📍 Fully tracked shipments; weekend delivery available (extra charge)
- ⏱️ Typical delivery window: 1–2 days once dispatched
↩️ Returns
- 🗓️ 14-day return policy
- 📦 Item must be unused with all components & accessories
- 💳 Buyer covers return shipping
🙏 Thanks for your time — E Bike Power UK.
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