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Ridstar Q20 Pro Motor
$269.00
Ridstar Q20 1500W 2000W Motor
Item: Hub Motor Q20 2000W | Ridstar Q20 1500W | Ridstar Q20 Pro
Used for: Ridstar e Bike Q20 Pro 2000W Motor 52V 40Ah
Ridstar Q20 Pro Motor: Front, Rear Motor has different Axle length, please order correctly
Please send a photo of original Ridstar Q20 Pro motor serial number to confirm compatibility.
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Ridstar e Bike Q20 Pro 2000W Motor – 52V 40Ah
Powering Your Ride: Genuine and Compatible Parts for the idstar Q20 2000w Dual-Motor E-Bike
If you rely on your Ridstar Q20 Pro to conquer hills and dominate the trails, a failed motor would be frustrating. Whether you are dealing with a sudden “Error 07,” a mysterious grinding noise, or simply need a Ridstar Q20 1500W or 2000W spare motor, you have come to the right place. This hub motor Q20 is optimized for 52V 40Ah battery systems to deliver 35-37 mph top speeds and brutal torque for off-road climbing.
⚠️ ATTENTION: To ensure 100% compatibility, please provide your Motor Serial Number (located on the hub casing) during checkout. Ridstar uses specific internal windings for different motor gear batches.
Ridstar Q20 2000W Motor Replacement Features
The Ridstar Q20 Pro is renowned for its class-leading dual motor drive system, offering standard 1500W per single motor and 2000W Peak options to match your riding style.
- Dual-Motor Ready: Ridstar 1500W motor replacements for front and rear hub motors.
- High-Voltage Efficiency: Optimized for 52V 40Ah battery systems to maximize torque and range.
- Peak Performance: Achieve verified top speeds of 35-37 MPH once your speed limiter is properly configured .
- Robust Construction: Designed to handle the stresses of Ridestar 20″ fat tires and rough off-road terrain.
Ridstar Q20 1500W Top Speed
| Model | Voltage | Power | Top Speed | Compatibility |
|---|---|---|---|---|
| Ridstar Q20 1000W | 48V | 1000W | 25 MPH (40 KPH) | Single Rear Motor |
| Ridstar Q20 1500W | 48V | 1500W | 30 MPH (50 KPH) | Single Rear Motor |
| Ridstar Q20 Pro | 52V | 2000W (Dual) | 35 MPH (55 KPH) | Dual Motor System |
Ridstar Q20 Pro Motor Specifications
- Motor Type: Brushless Dual Hub Motor
- Peak Power: 2000W (Peak) 1500W (Per Motor)
- Nominal Voltage: 52V
- Top Speed: 35 – 37 mph (locked)
- Connector Type: Sealed 9-Pin Waterproof
- Compatible Battery: 52V 40Ah (Dual Battery)
- Max Torque: 70-90 N.m+
When to Replace Your Ridstar Q20 Motor
- Persistent Error Codes: Ridstar Q20 Error code 07, 35, or 36 and have ruled out a simple loose connection.
- Physical Damage: The axle is snapped, the side cover is cracked, or the cable is severely stripped.
- Internal Noise: Loud grinding or clicking sounds emanating from the hub.
- Overheating Failure: The motor gets extremely hot very quickly and loses power, indicating shorted windings.
💡 Tip: Ride gently for 10–25 miles to let new gears seat properly.
Ridstar Q20 Pro Motor FAQ & Troubleshooting
Ridstar Q20 Pro display shows an error code. What does it mean?
The Ridstar Q20 series uses specific error codes to help you diagnose problems.
- Error 07 / Error 35 / Error 36: Motor Failure code.
- Error 07 generally indicates a general motor fault or cable connector issue.
- Error 35 specifically points to Motor Phase Loss: One of the three thick phase wires is disconnected or damaged inside the axle or cable.
- Error 36 indicates a Motor Hall Sensor fault: The sensors that tell the Ridstar Q20 Pro controller how to spin the motor have failed, or the small wires are broken.
The motor cable is stripped/worn through into the wheel. Can I fix it?
Yes, but it requires careful work. If the cable has been stripped (cut) where it enters the axle, the wires are likely shorting against the metal hub. You have two options:
- Cable Replacement (Difficult): You can attempt to disassemble the hub motor and replace the entire wiring harness. This requires soldering and careful extraction of the old wires.
- Q20 Hub Motor Replacement (Recommended): Water ingress and shorts can damage the hall sensors and controller, replacing the motor is often the safer, more reliable option.
I had an accident and the motor axle broke. What now?
A broken axle is a clear sign of extreme stress. This requires a full motor replacement. Do not attempt to ride or weld the axle, as this is a critical safety component. When installing a new motor, ensure the axle nuts are torqued to spec to prevent “spinout” which can strip the axle wires or damage the dropouts.
My motor is making a grinding or clicking noise. Is the gear system damaged?
Yes, a grinding noise often points to mechanical damage inside the motor. This could be:
- Broken Planetary Gears: The nylon or metal gears inside the hub may have sheared teeth. This is common under extreme load.
- Bearing Failure: Worn bearings can cause the rotor to rub against the stator.
- Magnet Debris: A magnet may have come loose and is catching on the internal components.
If you hear grinding, stop riding immediately. Continuing to ride can send metal debris through the motor, destroying the windings and potentially damaging your controller. This usually warrants a full motor replacement.
How to Replace Ridestar eBike Motor?
1. Disconnect Q20 hub motor cable from frame.
2. Remove wheel (axle nuts + derailleur/brake if rear).
3. Match wiring – Use multimeter to confirm phase/hall wire order (colors may vary).
4. Install new Ridstar motor, torque axle nuts properly.
5. Test with wheel off ground before riding.
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Patrick Evans –
Every Amazon listing looked generic and nobody could guarantee compatibility. This was one of the few stores that actually understood the different Ridstar motor versions.