QA1 RCK52384 Rear Coilover Conversion Kit — 1978–1996 GM B-Body, Single Adjustable, 250 lb/in
QA1 RCK52384 Rear Coilover Conversion Kit — 1978–1996 GM B-Body, Single Adjustable, 250 lb/in
Part number: QA1RCK52384
Available to order
Not sure it fits? Ask LTACEligible in-stock orders placed before 2 p.m. Eastern, Monday–Friday, ship the same day.
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Rear coilover conversion for your GM B-body
The QA1 RCK52384 replaces the separate rear springs and shocks with adjustable coilover assemblies. This kit equips both rear corners; front suspension parts are not included.
What comes in the kit
- Two single-adjustable QA1 shocks
- Two 12-inch springs, each rated at 250 lb/in
- Upper and lower mounting brackets and installation hardware
What you can adjust
The shock adjusters provide 18 damping settings to tune ride firmness. Spring-seat and bracket adjustments set ride height. The 250 lb/in figure is the spring rate—not a vehicle weight rating or the shock adjustment. Choose spring rate for your vehicle weight and intended use.
Fitment and installation
Listed here for 1978–1996 GM B-body, including Caprice. QA1’s current product page also names 1977, but its installation guide starts at 1978. Confirm a 1977 application before ordering.
- Drilling is required for additional bracket mounting holes. This is a suspension conversion, not a simple replacement-shock installation.
- Wagons require rear-crossmember clearancing for the springs.
- Lower brackets may not fit aftermarket rear axle housings.
- A QA1 T114W spanner wrench (or T115W) and anti-seize are required separately. The 7888-109 thrust-bearing kit is optional.
Follow QA1’s installation instructions and check axle, suspension and tire clearance. Need help matching the setup? Plan it with LTAC.