QA1 RCK52337 Rear Coilover Kit 1964-72 GM A-Body Double Adj 170lb

Vehicle Fitment

• 1964-1972 Chevrolet Chevelle (all trims & body styles)
• 1964-1972 Chevrolet El Camino
• 1970-1972 Chevrolet Monte Carlo
• 1964-1972 Buick Skylark / Gran Sport
• 1964-1967 Buick Special
• 1964-1972 Oldsmobile 442 / Cutlass / F-85 / Vista Cruiser
• 1964-1972 Pontiac GTO
• 1964-1972 Pontiac LeMans
• 1964-1970 Pontiac Tempest
• 1969-1972 Pontiac Grand Prix
• 1971-1972 GMC Sprint

Fitment Notes

• Rear coilover conversion kit - sold as a complete pair with mounting brackets, two double adjustable shocks, two 12 in. springs (170 lb/in.), and all necessary hardware
• Converts the factory rear coil spring suspension to a fully adjustable coilover system - bolt-in installation, no cutting or welding required
• Ride height adjustment range: 1/2 in. higher than stock down to 2.25 in. lower than stock - achieved by threading the shock body up or down on the coilover sleeve
• Lower shock mount bracket may not work with aftermarket rear end housings - verify housing compatibility before ordering
• Compatible with factory trailing arms; QA1 recommends pairing with adjustable trailing arms (5248 or 5249) for maximum performance and precise pinion angle control
• Serviceable and rebuildable by QA1 authorized service centers
• Made in Lakeville, Minnesota, USA

Features

• Double adjustable Pro Coil shocks - 18 independent positions of compression and 18 independent positions of rebound adjustment, providing 324 total valving combinations for precise street and track tuning
• Fully threaded lightweight billet aluminum shock body allows easy ride height adjustment without changing spring rate
• 12 in. high-travel coil springs (170 lb/in.) with larger coil spacing - reduces unsprung weight, increases travel, and reacts faster than conventional springs
• USA-made mounting brackets engineered specifically for the 1964-1972 GM A-Body rear suspension geometry - bolt directly to factory trailing arm and frame mount locations
• 100% dyno tested and serialized at the factory - every shock verified before shipping
• Limited Lifetime Warranty on double adjustable shocks when registered at QA1

Specifications

• Position: Rear (Both Driver & Passenger Side - sold as a pair)
• Shock Adjustability: Double - 18-position independent compression + 18-position independent rebound (324 combinations)
• Spring Length: 12 in.
• Spring Rate: 170 lb/in.
• Ride Height Range: +0.5 in. to -2.25 in. from stock
• Shock Body: Threaded lightweight billet aluminum
• Hardware: All mounting hardware included
• Quantity: Sold as a complete kit (pair)
• Warranty: Limited Lifetime (double adjustable shocks, registration required)
• Country of Origin: USA (Lakeville, MN)

Included Components

• 2x Double Adjustable Billet Aluminum Rear Coilover Shocks
• 2x 12 in. High-Travel Coil Springs (170 lb/in.)
• 2x Upper Shock Mounting Brackets
• 2x Lower Shock Mounting Brackets
• Complete Hardware Kit (bolts, washers, nuts)
• Installation Instructions

Product Description

The QA1 RCK52337 is a bolt-in rear coilover conversion kit for all 1964-1972 GM A-Body vehicles - Chevelle, El Camino, Monte Carlo, GTO, LeMans, 442, Cutlass, Skylark, Grand Prix, and more. It converts the factory rear coil spring suspension to a fully adjustable double-adjustable coilover system with 324 valving combinations and up to 2.25 in. of ride height drop below stock (or 1/2 in. above). USA-made mounting brackets bolt directly to factory suspension locations; no cutting or welding required. Includes two 12 in., 170 lb/in. high-travel springs, double adjustable billet aluminum shocks, and all hardware. Double adjustable shocks are covered by a Limited Lifetime Warranty when registered at QA1. Made in the USA.

Lower shock mount brackets may not be compatible with aftermarket rear housings. For single adjustable version, see RCK52336. For heavier spring rates, see RCK52358 (200 lb/in.) or other available spring rate options.