QA1 Coilover Overhaul Kit R230-200 Rear Suspension, Med, D-Adj, GM 10 Bolt, 73-8. Suspension > Suspension, Springs and Related Components > Coilover Overhaul Kit. Rear Suspension, Med, D-Adj, GM 10 Bolt, 73-87 C10, Dbl Adjust, 200 Lb Springs. At QA1, we believe vehicles were meant to be driven.
From bolt-on products that get you behind the wheel faster, to experienced technicians available to help increase your 60' times or handle curves with confidence, everything we do is designed to get you out on the road. Whether your goal is a Saturday night sprint across the checkered flag or a slow, easy cruise down main street, we have the suspension and driveline products you need for the experience you want. No matter what you drive, we want you to #goDRIVEit!