{"product_id":"mtx39-3000w-ebike-conversion-kit-250w-road-legal-limiter-switch-60a-sinewave-controller-48v-52v-60v-72v-high-torque-electric-bike-mtx-conversion-kit-mtx39-rim-26-27-5-29-copy","title":"MTX39 3000W EBike Conversion Kit 250W Road Legal Limiter Switch 60A SINEWAVE Controller 48V 52V 60V 72V High Torque Electric Bike MTX Conversion Kit MTX39 Rim 26\" 27.5\" 29\"","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e# 250W Speed-Limited MTX39 E-Bike Conversion Kit\u003c\/p\u003e\n\u003cp\u003eTransform your existing bike into a **speed-limited electric bike** with this MTX39 conversion kit, featuring a **250W maximum motor power setting and a 15.5 mph (25 km\/h) speed limit**.\u003c\/p\u003e\n\u003cp\u003eThe included **250W Speed Limit Switch** disables the throttle and limits the motor output to a maximum of 250W, helping configure the system for UK road-legal e-bike requirements when the complete bike and setup meet all applicable regulations.\u003c\/p\u003e\n\u003cp\u003eAvailable with **24\", 26\", 27.5\", and 29\" MTX39 rear motor wheel options**, this kit provides the key components needed to convert a compatible bicycle to electric power.\u003c\/p\u003e\n\u003cp\u003e### Motor Specifications\u003c\/p\u003e\n\u003cp\u003e* **Maximum Limited Power:** 250W\u003cbr\u003e* **Speed Limit:** 15.5 mph \/ 25 km\/h\u003cbr\u003e* **Throttle:** Disabled when the 250W speed-limit function is activated\u003cbr\u003e* **Motor:** MTX39 Rear Hub Motor\u003cbr\u003e* **Motor Voltage:** Compatible with 48V \/ 52V \/ 60V \/ 72V systems\u003cbr\u003e* **Magnet Width:** 45mm\u003cbr\u003e* **Magnets:** 23 pairs \/ 46 pieces\u003cbr\u003e* **Hall Sensors:** Dual Hall Sensor System — one spare\u003cbr\u003e* **Motor Efficiency:** Up to 84.8%\u003cbr\u003e* **Maximum Torque:** 80.3 N·m\u003cbr\u003e* **Maximum Rotation:** Approximately 642 RPM\u003cbr\u003e* **Rated Rotation:** Approximately 600 RPM\u003cbr\u003e* **Motor Weight:** Approximately 10 kg\u003cbr\u003e* **Rear Dropout:** 135mm\u003cbr\u003e* **Drive Type:** Single-Speed Freewheel\u003c\/p\u003e\n\u003cp\u003e### What's Included\u003c\/p\u003e\n\u003cp\u003e1. **MTX39 Rear Hub Motor Wheel** — 24\", 26\", 27.5\", or 29\"\u003cbr\u003e2. **Universal 18-MOSFET Sine Wave Controller** — 48V \/ 52V \/ 60V \/ 72V, 60A\u003cbr\u003e3. **UKC1 Colour Display**\u003cbr\u003e4. **Twist Throttle**\u003cbr\u003e5. **2 × Brake Sensors**\u003cbr\u003e6. **Pedal Assist Sensor (PAS)**\u003cbr\u003e7. **2 × Torque Arms**\u003cbr\u003e8. **250W Speed Limit Switch** — limits motor power to 250W, caps speed at 15.5 mph, and disables the throttle\u003c\/p\u003e\n\u003cp\u003e### No Battery Included\u003c\/p\u003e\n\u003cp\u003e**This conversion kit does not include a battery.** A compatible battery must be purchased separately. Please ensure the battery voltage matches the controller configuration selected for your build.\u003c\/p\u003e\n\u003cp\u003e### Built for a Controlled E-Bike Conversion\u003c\/p\u003e\n\u003cp\u003eThe MTX39 hub motor provides a robust foundation for an e-bike conversion, while the included speed-limit function allows the system to be configured for **250W maximum motor power and 15.5 mph maximum assisted speed**.\u003c\/p\u003e\n\u003cp\u003e**250W Limit. 15.5 MPH. Complete Conversion Kit.**\u003c\/p\u003e\n\u003cp\u003e**Important:** UK e-bike regulations include requirements beyond motor power and speed, including pedal assistance and other vehicle specifications. Always ensure your completed e-bike complies with current UK legislation before use on public roads.\u003cbr\u003e\u003c\/p\u003e","brand":"ELECTRO WATTS EBIKES","offers":[{"title":"26\"","offer_id":54697493070165,"sku":null,"price":420.0,"currency_code":"GBP","in_stock":true},{"title":"27.5\"","offer_id":54697493102933,"sku":null,"price":420.0,"currency_code":"GBP","in_stock":true},{"title":"29\"","offer_id":54697493135701,"sku":null,"price":420.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1070\/2595\/7205\/files\/Photo_23-08-2026_21_19_38_upscayl_3x_upscayl-standard-4x.png?v=1787516621","url":"https:\/\/electrowattsebikes.co.uk\/products\/mtx39-3000w-ebike-conversion-kit-250w-road-legal-limiter-switch-60a-sinewave-controller-48v-52v-60v-72v-high-torque-electric-bike-mtx-conversion-kit-mtx39-rim-26-27-5-29-copy","provider":"ELECTRO WATTS EBIKES","version":"1.0","type":"link"}