Upgrade your 1963-1972 Chevy C10 pickup with HQ Series adjustable Coil-overs for high performance handling, great ride quality and adjustable ride height. Ridetech HQ Series Coil-overs feature 24-position rebound adjustment to help you fine tune the shock calibration to your driving preferences and vehicle demands. With large 1.834″ pistons, heavy duty 5/8″ shafts, and impact forged bodies, HQ Series Coil-overs are built to last and 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 of your truck better than any other company. This rear Coil-over system includes two rear HQ Series Coilover shocks and two Hyperco coil springs with proper spring rate.