Does your Razor MX650 or MX500 feel a little… tame? Are you craving more torque for off-road trails and more speed for the open paths? It’s time to transform your ride from a mild-mannered machine into an absolute beast.
This complete guide will walk you through the ultimate power upgrade for your Razor dirt bike: the high-performance Kunray MY1020-WG temperature sensor motor, perfectly paired with the sophisticated NS12 FarDriver Controller.
The stock motor in your Razor is great for getting started, but it has its limitations:
Limited Power & Speed: It simply can't deliver the thrilling acceleration and top speed that adult riders often seek.
Weak Torque for Hills: Struggles with steep inclines and demanding off-road terrain.
Overheating Risk: Under sustained load, the stock motor can overheat, leading to premature failure.
An upgrade isn't just about going faster; it's about unlocking the true, reliable potential of your bike.
This isn't just any 48V 2000W motor or 72V 3000W motor. The MY1020-WG is a specialized high-speed BLDC motor designed as a direct, bolt-on replacement for popular Razor models like the MX650, MX500, SX500, and RSF650.
Key Features & Benefits:
Perfect Fit for Razor: Direct compatibility means minimal fabrication and a straightforward installation process.
Power Options:
48V 2000W Motor: A massive power boost for most riders, offering incredible torque and speed for a fantastic value.
72V 3000W Motor: For the speed demon, this version delivers extreme performance that rivals professional-grade e-vehicles.
Built-in Temperature Sensor (The "WG" Advantage): This motor comes with a KTY83-120 temperature sensor. It actively monitors heat, allowing the controller to protect your investment from thermal damage during intense rides. This is the safety feature standard motors lack.
Robust Construction for Reliability:
6mm² Phase Wires: Handle high current with ease, ensuring maximum power delivery.
All-Copper Windings & Aluminum Housing: For superior efficiency and heat dissipation, enabling sustained power output.
1. Choosing Your Motor:
For an outstanding balance of power, torque, and value, choose the 48V 2000W BLDC motor.
For uncompromising, top-tier performance and blistering speed, go for the 72V 3000W motor.
2. The Brains Behind the Brawn: NS12 FarDriver Controller
To fully and safely unlock the potential of your new MY1020 motor, you need an equally advanced controller. We highly recommend the NS12 FarDriver Controller.
Why this combo is a game-changer:
Unlocks Sensorless Operation: The FarDriver can expertly run this sensorized motor in sensorless mode, providing smooth startups and excellent low-speed performance.
Advanced Tuning & Protection: It fully utilizes the motor's temperature sensor for proactive thermal protection. You can fine-tune torque, speed curves, and current limits to create your perfect riding feel.
Premium Performance: Known for its smooth and powerful output, the FarDriver minimizes noise and maximizes efficiency, giving you a professional-grade riding experience.
3. Installation Made Easy:
Select your motor with or without the mounting bracket based on your frame. When you purchase the Kunray MY1020-WG motor and NS12 FarDriver as a kit, you get guaranteed compatibility. Follow our clear wiring diagrams, and you'll be ready to ride in no time.
| Feature | Stock Razor Motor | MY1020-WG (48V2000W) | MY1020-WG (72V3000W) |
|---|---|---|---|
| Power | ~500-650W | 2000W | 3000W |
| Top Speed (approx.) | ~15-20 mph | ~28 mph | ~35+ mph |
| Hill-Climbing | Struggles | Confident & Strong | Extreme Capability |
| Thermal Protection | No | Yes (KTY83 Sensor) | Yes (KTY83 Sensor) |
Your upgraded Razor will be a completely new machine—capable of tackling serious off-road trails, delivering heart-pounding acceleration, and providing a reliable, adult-sized adrenaline rush.
The path to an unstoppable electric bike is clear:
Choose Your Power: Decide between the 48V 2000W or 72V 3000W MY1020-WG motor.
Get the Complete Kit: For optimal performance and protection, pair your motor with the NS12 FarDriver Controller. The best and easiest way to do this is to purchase our pre-configured "Razor Performance Upgrade Kit" from the Kunray store.
Install and Dominate: Follow the guide, bolt everything in, and get ready to experience your Razor like never before.
Visit our store today to explore our kits and start your upgrade journey!
