Skip to product information
1 of 12

AIKEMA 48V 500W 125EVH.RC500 Rear Hub Complete Conversion Kit

AIKEMA 48V 500W 125EVH.RC500 Rear Hub Complete Conversion Kit

Regular price $230.00 USD
Regular price Sale price $230.00 USD
Sale Sold out
Varstrom offers free Shipping.

Motor Spec.

Model No.: 125EVH.RC500
Position: Rear Hub Motor
Wheel Size (Inch): 26/27.5/700C
O.L.D (mm): 138 to 145
Norminal Voltage (Vdc): 48
Rated Power (W): 500
Top Speed (km/h): 44
Max Torque (N.m): 65
Weight (kg): 4.0
Brake: Disc Brakes or V-brakes
Tests & Certifications: IP X5/ROHS/CE

Controller Spec.

Max Current: 18(±1)A
Rated Current: 9(±1)A
Rated Voltage: 48V
Low Voltage: 39 (±1)V
Over Voltage: 62 (±1)V
Programming Cable: N/A

Package Include

For the Kits

  • Hub Motor Wheel
  • Controller
  • Controller Box
  • Thumb Throttle (Accelerator)
  • Brake Levers or Brake Sensors
  • Left Sight PAS Sensor (Smaller Hole)
  • 1T4 Cable
  • Installation Tools
  • 36V 250W Label

For Customize Options

  • Display
  • Battery
  • Headlight
  • Tail Light
  • Right Sight PAS Sensor (Larger Hole)

1+2 Warranty

Warranty Policy

Warranty Scope

  • Motor: A one - year free warranty service is provided from the date of purchase. During the free - warranty period, if the motor malfunctions due to material or workmanship defects, we will repair or replace it free of charge. After the expiration of the free - warranty period, a two - year after - sales maintenance service will be provided. For malfunctions caused by material or workmanship defects, only the cost of spare parts will be charged; for malfunctions caused by human factors, both the cost of spare parts and reasonable maintenance labor costs will be charged.
  • Battery: The battery comes with a one - year free warranty. Under normal usage conditions, if the battery experiences premature capacity attenuation (less than 60% of the rated capacity) or other quality problems during the free - warranty period, we will provide free repair, replacement, or corresponding compensation according to the specific situation. After the free - warranty period ends, during the two - year after - sales maintenance service period, for quality - related problems, the cost of spare parts will be charged; for damages caused by human factors, both the cost of spare parts and maintenance labor costs will be charged.
  • Display (Meter): The meter enjoys a one - year free warranty. If the meter shows abnormal display, malfunctions, or other quality - related problems during the free - warranty period, we will be responsible for free repair or replacement. During the subsequent two - year after - sales maintenance service, for repairs due to quality problems, the cost of spare parts will be charged; for malfunctions caused by human reasons, both the cost of spare parts and maintenance labor costs will be charged.
  • Other Accessories (This includes brake levers or brake sensors, thumb throttle, speed sensors, chainrings, cranks, 1T4 wires, etc.): with a 6 - month warranty service. During the warranty period, if these accessories malfunction due to material or workmanship defects, we will repair or replace them free of charge. However, damages caused by non - quality reasons such as human usage habits are not covered by the free warranty, but we can provide paid maintenance services.

Warranty Conditions

The warranty service is only applicable to e - bike conversion kits purchased from our independent website.

Customers are required to provide valid purchase vouchers, such as order screenshots, invoices, etc.

The product must malfunction under normal usage and maintenance conditions. Damages caused by human factors such as improper use, abuse, unauthorized modification, and accidents are not within the scope of free maintenance even during the free - warranty period, but paid maintenance can be carried out according to the after - sales maintenance service standards.

10-Day No-Reason Return Policy

Within 10 days from the date when the customer receives the product, if the customer is not satisfied with the product, they can enjoy the no - reason return service.

The returned product must be in brand - new condition, without any signs of use, damage, or disassembly, and the original packaging, accessories, instruction manuals, etc. must be complete.

The customer is responsible for the return shipping costs.

Warranty and Return Process

Warranty Process: After the customer discovers a problem with the product, please contact our customer service team in a timely manner and provide a detailed description of the malfunction and the purchase voucher. Our customer service staff will communicate with you within 2 working days to confirm the malfunction. For problems within the scope of free warranty, free repair or replacement will be arranged; for problems within the scope of after - sales maintenance service, after notifying the customer of the required costs according to the cause of the malfunction and the service standards, maintenance will be carried out.

Return Process: If the customer needs to return the product, please contact the customer service within 10 days to apply for a return. The customer service will provide you with the return address and relevant guidance. After we receive the returned product and confirm that it meets the return conditions, we will process the refund within 3 working days.

Rim Options
Wheel Size

Helical Gear – The Technical Upgrade

The gradual adoption of Helical Gear hub motors isn’t merely a simple “noise reduction choice”—it’s the inevitable technological destiny for the e-bike industry as it evolves from “wild growth” to “standardization and premium quality.” It upgrades the regulatory compliance, smoother power and riding experience. A modest price premium has already been accepted by consumers.Helical Gear VARSTROM AIKEMA Rear Hub Kits vs Spur Gears

Advantages of Helical Gear

  • Regulatory Compliance: Reduces noise to meet EU, UK and most US state laws
  • Performance Upgrade: Multiple teeth engage simultaneously, increasing load capacity—ideal for high-power motors
  • Extended Lifespan: Lower contact stress extends fatigue life by 60%+
  • Enhanced Smoothness: Reduces vibration amplitude, significantly improving ride quality

125XVH.RC500 and ControllerMotor and Controller Specs for VARSTROM & AIKEMA 48V 500W 125EVH.RC500 Rear Hub Complete Conversion Kit

Rear Hub Motor

  • Position: Rear Hub
  • OLD: 142 (±1)mm
  • Norminal Voltage: 48V
  • Rated Power: 500W
  • Max Torque: 65N.m
  • Max Speed: 44km/h
  • η: >75%

48V 500W Hub Motor Controller

  • Max Current: 18A
  • Rated Current: 9A
  • Rated Voltage: 48V
  • Low Voltage: 39 (±1)V
  • Over Voltage: 62 (±1)V
  • Programming Cable: N/A

Warm Tip: VARSTROM AIKEMA controller doesn't support reprogramming.

Installation Dimensions Confirmation

At VARSTROM, we believe the first priority after determining your motor specifications is to clearly understand its installation dimensions. A clear grasp of the wheel installation logic eliminates the frustration of having to exchange products after they arrive. That’s why we’ve created an installation exploded-view diagram—to help you better comprehend the motor’s fitting requirements.

Please refer to this diagram to understand the O.L.D (Over-Locknut Dimension) calculation range for this hub motor (note: O.L.D includes the anti-rotation washer), then measure the spacing on your frame accordingly.Installation Measurement for VARSTROM & AIKEMA 48V 500W 125EVH.RC500 Rear Hub Complete Conversion Kit

Installation Recommendation

If the motor’s installation dimension (O.L.D) is slightly larger than your frame dropout, you can install the anti-rotation washer on the outside of the dropout. However, if the O.L.D is significantly larger than the dropout, VARSTROM recommends considering an alternative motor option.

Friendly Tip: If your frame's rear dropout spacing is less than 142mm (e.g., 135mm), consider installing the torque arm on the outside of the rear dropout.

Note: Shims are used to create or fill installation space; O.L.D measurements do not account for shim thickness.

Disc/V Brake Rim Options

VARSTROM offers both disc brake rims and V-brake rims for this motor. If your bicycle uses a V-brake system, you must select the V-brake rim version.

Rim style for VARSTROM (AIKEMA) 48V 500W 125XVH.RC Rear Hub Complete Conversion Kit

Friendly Tip: If disc brake version wheels are temporarily out of stock, V-brake rim versions will also support Disc Brake System. So, VARSTROM will ship V-brake version wheels as a substitute.

Specs for VARSTROM Disc/V Brake Wheel

Disc Brake Wheels

Disc Brake Rim Size for VARSTROM (AIKEMA) Rear Hub Wheels

V-Brake Wheels

V-Brake Rim Size for VARSTROM (AIKEMA) Rear Hub Wheels

Varstrom eBrake Options

To better matching customer's existing brake system, VARSTROM provides power-cutoff mechanical brake levers and sensors. This device automatically stops the motor when braking which is a critical safety feature for e-bikes.

Varstrom eBrake Options_Varstrom

Display Options

VARSTROM AIKEMA hub kits features can-bus display, Varstrom offered 3 displays for the hub kit system.

Display Options for VARSTROM (AIKEMA) Rear Hub Complete Conversion Kit

Battery Options

All VARSTROM 48V batteries are compatible with this motor. We recommend exploring our 48V Battery with Charger for E-Bike Conversion collection to find the right power solution for your build.

You may also use your own battery, provided it meets these requirements

  • Voltage: 48V
  • BMS Max Continuous Current: ≥30A

Wiring Schematic

If you're not familiar with the wiring, during installation, you can save this 125EVH.RC500 Rear Hub Wiring Diagram for reference.VARSTROM & AIKEMA 48V 500W 125EVH.RC500 Rear Hub Complete Conversion Kit

Package Included

For the Kits

  • Hub Motor Wheel
  • Headlight
  • Controller
  • Controller Box
  • Brake Levers or Brake Sensors
  • Thumb Throttle (Accelerator)
  • Left Sight PAS Sensor (Smaller Hole)
  • 1T4 Cable
  • Installation Tools
  • 250W Labels

For Customize Options

  • Display
  • Battery
  • Tail Light
  • Right Sight PAS Sensor (Larger Hole)

Package for VARSTROM (AIKEMA) 48V 500W 125XVH.RC Rear Hub Complete Conversion Kit

Delivery Time and Warranty

90% of Varstrom's products are shipped from local warehouses and can be delivered within 3 to 8 working days. The delivery point in the EU region is in Poland, and the delivery time is 6 to 8 working days. Out - of - stock products may be shipped from China. Customers can contact Varstrom via WhatsApp (+86 15989932938) or E-mail to inquire about the logistics situation.

Varstrom Delivery Policy and Warranty Policy

Text block

View full details