QA1 RCK52385 Pro Rear Coil-Over System for Select 1978-1996 GM B-Body, Single Adjustable, 12in x 300lbs/in

Fits select 1978-1996 Buick, Chevrolet, Oldsmobile, and Pontiac B-Body models, including Caprice, Impala SS, Roadmaster, and Delta 88.

Convert your GM B-Body's factory rear suspension to a modern coil-over setup with the QA1 Pro Rear Coil-Over System. This bolt-in conversion kit replaces standard shocks and springs with adjustable aluminum coil-overs, providing significant improvements in both stance and handling. The single-adjustable shocks feature 18 positions of simultaneous rebound and compression tuning, allowing you to dial in the perfect balance for street cruising or performance driving. The fully threaded shock bodies offer precise ride height adjustability, ranging from 0.5 inches higher than stock to a 2.25-inch drop.

This kit includes QA1 lightweight high-travel springs, designed with fewer coils and a smaller wire diameter to reduce unsprung weight and prevent coil bind. Each system is 100% dyno-tested and serialized to ensure consistent performance across both units.

• Manufacturer Part Number: RCK52385
• Adjustment Type: Single Adjustable (18 positions)
• Spring Rate: 300 lbs/in
• Spring Length: 12 inches
• Shock Material: Machined Aluminum
• Installation: Direct Bolt-In (No cutting or welding required)
• Lowering Range: 0.5" above stock to 2.25" below stock
• Kit Includes: (2) Shocks, (2) High-Travel Springs, Mounting Brackets, and Hardware
• Origin: Made in the USA