Over 95% of the 4,000+ Rotor Cranks buyers are satisfied with the performance increases that Rotor Cranks bring, and have kept their Rotor Cranks at the end of the 30 day guarantee period.

 Rotor Cranks are so effective that they come with a 30 day satisfaction money back guarantee (Q-Rings do not qualify for the 30-day Guarantee trial). You have 30 days to decide, based upon your own experience whether they will work for you. If you decide to return the cranks within this 30 day period, all you need to do is to clean them up and pack them in their original container using the original packaging (so be sure to save this) and send them back to us. After we receive your (undamaged) cranks we will refund your original cost, minus $20.00 for factory return shipping fees (we get charged this):

RotorCranksUSA.com Returns c/o Rotor USA
[Your name and Sales Order number] Packages:
Mail: 24803 S 194th Street
Queen Creek, AZ 85242 
Note that the 30 Day Guarantee does not apply to previous year closeout models. All sales are final on these systems, although the two year warranty does apply. All sales final on chainrings, parts, clothing and systems used beyond the 30 Day Guarantee period.