HQ Series adjustable CoilOvers give your 1964-1967 Mustang high performance handling and adjustable ride height. 24-position rebound adjustment helps you fine tune the shocks to your driving preferences and vehicle demands. With large 1.834″ pistons, heavy duty 5/8″ shafts, and impact forged bodies, HQ Series CoilOvers are built to perform and built to last. They’re backed by our exclusive 1,000,001 mile warranty. RideTech develops our shock calibrations and spring rates through thousands of cross country test miles, on our exclusive test track and at competition events from coast to coast. We understand the suspension needs of your Mustang better than any other company. This CoilOver system includes two front HQ Series CoilOver shocks and two Hyperco coil springs with proper spring rate.