RPM Low Visibility Wheelie Bars are designed to take the stress off of the low hanging rear bumper whenever the rear end wants to drag on the ground. The wheels we designed are large enough to touch down before the rear bumper does in 99% of normal acceleration wheelies, eliminating your fears of blowing the rear bumper off of the truck or using the rear bumper as a plow. Each set of Low Visibility Wheelie Bars is made from our nearly indestructible blend of engineering grade nylons and made right here in the USA. Tech RPM Low Visibility Wheelie Bars only work with RPM #81762 Rear Bumper Mounts. They will not work with stock or any other known aftermarket rear bumper mounts.