36V 250W Freewheel Hub Conversion Kits with OEM Hub Motors
36V 250W Freewheel Hub Conversion Kits with OEM Hub Motors
Product Core Data
Product Core Data
Shipping Policy
Shipping Policy
Varstrom Shipping Policy
All orders are processed within 1 or 2 business days (excluding weekends and holidays) after receiving your order confirmation email. You will receive another notification when your order has shipped.
Delivered Duty Paid
All the product you can buy on Varstrom, we have paid the tax. So you don't need to pay extra money for the order.
Where Varstrom Can Reach
Varstrom had became Bafang Cooperation Brand since 2018. Over the past four years, we have built a very close relationship with Bafang Company. Varstrom has established a lot of warehouse around the word to make sure that all the customer will get their package as soon as possible.
- European Union: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden
- United States: Alabama (AL), Arizona (AZ), Arkansas (AR), California (CA), Colorado (CO), Connecticut (CT), Delaware (DE), Florida (FL), Georgia (GA), Hawaii (HI), Idaho (ID), Illinois (IL), Indiana (IN), Iowa (IA), Kansas (KS), Kentucky (KY), Louisiana (LA), Maine (ME), Maryland (MD), Massachusetts (MA), Michigan (MI), Minnesota (MN), Mississippi (MS), Missouri (MO), Montana (MT), Nebraska (NE), Nevada (NV), New Hampshire (NH), New Jersey (NJ), New Mexico (NM), New York (NY), North Carolina (NC), North Dakota (ND), Ohio (OH), Oklahoma (OK), Oregon (OR), Pennsylvania (PA), Rhode Island (RI), South Carolina (SC), South Dakota (SD), Tennessee (TN), Texas (TX), Utah (UT), Vermont (VT), Virginia (VA), Washington (WA), West Virginia (WV), Wisconsin (WI), Wyoming (WY)
- United Kingdom: British Forces, England, Scotland, Wales
- Canada
- Australia
- Asia: China, Hong Kong SAR, Japan, Malaysia, Singapore, South Korea, Taiwan, Thailand, Vietnam

Varstrom Delivery Time
Once we receive order, we will process the ordered and send the products to the customer from the nearest warehouse in 24 hours. Depending on the distance of the region from the shipping warehouse, the express time may take 6 to 8 days. The following table shows 95% of our order delivery schedule for reference.
| Regions | Delivery Time |
|---|---|
| United States | 3 to 7 business days |
| United Kingdom | 2 to 4 business days |
| European Union | 3 to 8 business days |
| Canada | 3 to 6 business days |
| German | 2 to 4 business days |
| France | 2 to 4 business days |
| Poland | 2 to 4 business days |
| Australia | 3 to 5 business days |
Shipping Tracking
Once the product is shipped from the warehouse, the system will automatically send a tracking number to customer, you can use it to check where is the package. If customers cannot find their tracking number, please find us through the contact information and we will help you find where the products are.
Shipping costs are non-refundable.
Our motor kits and batteries require signature confirmation for delivery. If delivery is refused, shipping costs are non-refundable and a 10% restocking fee will be deducted (this will be withheld from any refund).
For returning an item, you will be responsible for paying for your own shipping costs and original shipping costs are non-refundable. For returns of products over $50, we recommend that you use shipping service can be tracked or purchase shipping insurance. We don't guarantee that we will receive your returned item.
We can only guarantee delivery of purchases when there are no changes or modifications during shipment. Any purchases made from our company in which a customer decides on their own accord to make any modifications directly with the shipping company (FedEx or USPS) during shipment (including but not limited to; delivery address changes, hold and or pick up requests), our company is no longer able to guarantee delivery and is not responsible for lost packages. We can only guarantee delivery of orders purchased through our company and shipped to the address which was originally provided at purchase. If any modifications are made by the customer on their own accord during the shipment process we are no longer responsible for any delivery delays or lost packages.
How to Contact Varstrom
Company Address: Room 408B, 4/F, Lippo Sun Plaza, 28 Canton Road, Tsim Sha Tsui, Kowloon, Hong Kong SAR
Email: service@varstrom.com
WhatsApp: +86 15989932938
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OEM Motors. VARSTROM Wheels. Exceptional Value.
To be completely transparent, this is a special product created by VARSTROM for riders looking for a reliable and affordable 250W freewheel hub motor conversion solution.
Through our long-standing procurement network with OEM manufacturers, we secured a limited batch of classic 250W hub motors originally developed for OEM e-bike applications. All motors are brand new. Drawing on VARSTROM’s extensive experience in e-bike conversion kits, we’ve paired these motors with our own components to create a complete conversion kit that delivers exceptional value.
OEM-Grade Motors. Trusted Quality.
Specs for Motor RM.VSR03.D/DC and Controller
RM.VSF03.D
- Model: FM.VSF03.D
- Position: Front Motor
- OLD: 10 (±1)mm
- Drop Out: 97 to 103mm
- Norminal Voltage: 36V
- Rated Power: 250W
- Max Speed: 25km/h
- Max Torque: 42N.m
- η: >75%
RM.VSR03.DC
- Model: RM.VSR03.DC
- Position: Rear Motor
- OLD: 137 (±1)mm
- Drop Out:136 to 142mm
- Norminal Voltage: 36V
- Rated Power: 250W
- Max Speed: 25km/h
- Max Torque: 42N.m
- η: >75%
36V 250W Hub Motor Controller
- Max Current: 12A
- Rated Current: 6A
- Rated Voltage: 36V
- Low Voltage: 29 (±1)V
- Over Voltage: 46.8 (±1)V
- Programming Cable: N/A
RM.VSR04.DC
- Model: RM.VSR04.DC
- Position: Rear Motor
- OLD: 135 (±1)mm
- Drop Out:136 to 142mm
- Norminal Voltage: 36V
- Rated Power: 250W
- Max Speed: 32km/h
- Max Torque: 30N.m
- η: >75%
36V 250W Hub Motor Controller
- Max Current: 14A
- Rated Current: 7A
- Rated Voltage: 36V
- Low Voltage: 29 (±1)V
- Over Voltage: 46.8 (±1)V
- Programming Cable: N/A
Installation Dimensions Confirmation
To help customers confirm installation dimensions before purchase and reduce product returns caused by fitment issues, VARSTROM provides an exploded view diagram of the hub motor. Please refer to this diagram to understand the O.L.D calculation range (O.L.D data for BAFANG hub motor includes the anti-rotation washer), then measure the spacing on your frame accordingly.
Installation Recommendation: If the motor's O.L.D dimension is slightly larger than the dropouts, customers can install the anti-rotation washer on the outside of the dropouts. However, if the O.L.D dimension is significantly larger than the dropouts, VARSTROM recommends considering other motor options.

Specs for VARSTROM 250W Hub Wheel
Disc Brake Wheels

Display Options
Display Options for VSR03 or VSF03
Display Options for VSR4
All UART Display for BAFANG/VARSTROM will support our BAFANG hub kits, VARSTROM offers recommended displays in the product options for customers to choose.

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.

How to Finish the Installation
All required installation accessories are included in package. Customers can refer to the wiring diagram below to connect the motor assist system.

What Are In The Package
This complete hub motor kit includes all items shown in the diagram. Items outlined in orange are custom options and will only be included if selected by the customer.
For the Kits
- Hub Motor Wheel
- Controller
- Controller Box
- Brake Levers or Brake Sensors
- Thumb Throttle (Accelerator)
- Left Sight PAS Sensor (Smaller Hole)
- 1T4 Cable
- Installation Tools
For Customize Options
- Display
- Battery
- Headlight
- Tail Light
- Right Sight PAS Sensor (Larger Hole)

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.

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