Xray X4/T4 Bumper Shim

The Team QIK Bumper shim is one of the best bangs for your buck when it comes to going faster in spec racing. How? When you car dives off power (like say you lift to prepare for the next corner) if the chassis hits the racing surface you unload your front tires and lose steering and drag which both hurt corner speed. The Xray bumper sits below flush with the chassis (especially the 1.5 option. We use two with those chassis) so even though your chassis RH might be set to 5.2 mm, the front lip of the bumper sits lower and will be the first thing to drag. Raise it up with our shim, and you have more down travel of the chassis before it rubs unlocking less drag and freer steering, the good kind! Each bumper is .4 mm thick and crafted in nearly indestructible TPU which is impervious to common solvents like brake clean.