Take your 1967-1970 Ford Mustang to the pinnacle of performance for autocross and track days. Hotchkis-Tuned Adjustable Performance Series Shocks are one of the fastest easiest and most dramatic modifications you can make to the Mustang dramatically improving grip steering response and control. Adjustable Performance Series Shock Absorbers are manufactured by Fox and tuned by Hotchkis engineers to be the ultimate single adjustable shock for of your muscle car. Engineered using the most advanced development tools available the valving of these shocks was fine-tuned to deliver a smooth comfortable ride on the shock?s softest setting and a more aggressive race-oriented ride on its stiffest setting. Developed as part of a balanced system Hotchkis-Tuned APS Shocks give your vehicle more control and balanced handling especially when installed in conjunction with a Hotchkis Total Vehicle System. These shocks are made in the USA and are built with heavy duty billet aluminum end caps polyurethane bushings and ?? hard chrome plated heat treated alloy shafts ensuring years of trouble free operation.