Get the right feel, in and out of the corners and down the straights, with QuickCar torque absorber biscuits. These interchangeable bushings allow you to adjust your options to get the best traction for your race car. Designed for use with QuickCar torque absorbers, these polyurethane bushing are available in a several hardnesses. Keep the groove with QuickCar torque absorber biscuits.
 
Going in order for softest to hardest would be:
Blue
Green
Yellow
Orange
Red
Black