1up 3 inch diameter All-Aluminum Roller

1up has the largest roller of any trainer, for a smooth and quite ride.  Our 3 inch diameter all-aluminum roller extends tire life and provides the quietest ride of any trainer. 

Our large diameter roller helps to eliminate slipping, skipping or squealing.  Some trainers use a small 1.2 inch diameter roller. The smaller diameter rollers spin very fast and cause more tire wear.  Small diameter rollers produce more noise also.

The 1up 3 inch diameter roller is just one of the features that shows that we have the World's Best Performing Trainer... Guaranteed!