We are located in Southeast Florida. Our address is:

Radian USA
3705 NW 124 Ave
Coral Springs, FL 33065

Chainlift is made here in Florida. Some of the components are made by highly specialized factories in different states within the US. We do have a small number of components that are sourced internationally.

For shipping information and other order inquiries, contact customerservice@radian-usa.com.

For dealer orders or inquiries please contact info@radian-usa.com.

Most orders are shipped via the United States Postal Service (USPS) First Class Mail. We also offer express shipping for an additional charge.

International takes 2-6 weeks, Canada 1-2 weeks, domestic takes 3-5 days. If your order has not arrived within the times listed, please contact us. Also note times listed are from date of shipment, not date of order.

We do not take back orders unless we are doing pre-sales for a new product. If we are doing a pre-sale it will be very clearly listed in the top of the product description.

When you select an out of stock product, a green tab appears on the right of your screen. Click on that to register for in-stock notifications.

You will receive an email when your order ships. We ship Monday through Friday. Orders received before 3PM US Eastern Standard Time usually ship the same day.

Yes, we offer USPS Priority and Priority Express shipping options. The cut off time for shipping is around 3 PM US Eastern Standard Time each day. The "overnight" shipping we offer is USPS Priority — just select the option at checkout. Note that the overnight service is not guaranteed by the post office — it may take 2 days if you live in a rural area. We also offer USPS Priority 1-3 day service that usually saves 1-2 days off the shipping time.

Yes, we offer international shipping via USPS Priority Mail International and DHL Express Worldwide 3-5 day. Prices for expedited shipping vary by location, and if you are not given the option at checkout, contact us and we will enable it for your country.

Please note that if there are any custom fees for your country, you are responsible for those fees. 

We accept returns on products that have not been used (e.g. if you use the product, it cannot be returned.). The amount returned will be the full value less the shipping cost if shipping was free ($7 domestic). No returns on items over 30 days. Please contact us at customerservice@radian-usa.com for return instructions.

Please see our Warranty Page.

No. But we have designed and tested Chainlift to work on the majority of derailleurs made in the last 20-30 years. There are simply too many derailleur types made over the last 100 years to make that guarantee.

Please watch our instructional video and visit the chart here. Or if you don’t find your model on the list or don’t know your model, we will personally help you choose the right one. Just take a picture of your derailleur with your phone and email it to info@chainlift.com. We will reply quickly. Or if you prefer live video help, just connect with us via Facetime, Facebook Messenger, Google Duo, WhatsApp or Skype.

We designed Chainlift to work with all 12, 11, 10, 9, & 7 speed chains.

Chainlift will work on most 1x drivetrains. However, there may be some on-road 1x drivetrains with short cage derailleurs and small cassettes that will not have enough chain length for Chainlift to work. If you think you fit that description, just email a photo of your drive train to customerservice@radian-usa.com and we’ll let you know quickly before you order.

No, Chainlift only works on bikes with rear derailleurs.

Please watch our instructional video here and visit the chart here. Or if you don’t find your model on the list or don’t know your model, DO NOT WORRY. We will personally help you choose the right one. Just take a picture of your derailleur with your phone and email it to customerservice@radian-usa.com. We will reply quickly. Or if you prefer live video help, just connect with us via Facetime, Facebook Messenger, Google Duo, WhatsApp or Skype.