Free Shipping
Your position: Home / Faqs


* Secure payment

Paypal ID: [email protected]  

* Price Match

Found a lower total account (include price and delivery fee of same express)on other websites ? Let us know. Although we can't match every total account reported, we'll use your feedback to ensure that our prices remain competitive.(you can send email to [email protected])

Each Price Match request will be handled within 1 business days, and we will contact you by email.

* How to Determine Your Bike Rim Sizes

See: http://www.sheldonbrown.com/rim-sizing.html

* How to caculate the speed of the Rim size

(rpm)×3.14×(inch)Rim Size ×0.0254×60/1000

25km/h for 20" Rim ==rpm is 261
25km/h for 22" Rim ==rpm is 237
25km/h for 24" Rim ==rpm is 218
25km/h for 26" Rim ==rpm is 201
25km/h for 28" Rim ==rpm is 187
25km/h for 700C Rim ==rpm is 187

The code 16 motor is rated at 192 RPM. The code 15 is 205. The code 14 is 215. The code 13 is 230. The code 12 is 250. The code 11 is 280. The code 10 is 300. The code 9 is 335. And the code 8 is 378. That's right,  mind you all of these specifications are directly from the engineers of Bafang.

* Shipping Returns

Thank you for choosing PSWPower!
We know that you have a choice of Electric Bicycle Parts online and we appreciate your preference for PSWPowe.

Shipment Coverage

The products bought from this website can be delivered in all over the world. All transactions will be carried out in US Dollar only.

Order Cancellation

Once ordered, a shipment may not be cancelled. You may however return it back(Please see below for how to return product). The product price shall be refunded once the product reaches us.

Return Policy

PSWPowe products conform to the highest quality standards. But in case you are not happy with the product, you may return the product within 7 days from the date of delivery.you need to keep the original packaging and have not used the product。

PSWPowe  may make changes to the terms or introduce additional terms from time to time. You understand and agree that if you use the Services after the date on which the terms or additional terms have changed, Carlton will treat your use as acceptance of the updated terms or additional terms.

* how much should be shipping to our country per kilo?

you can try to place the order, our website pswpower.com can calculate shipping cost automatically before you check out.you don't need register on our website,just check out with PayPal.