# QA1 73-77 GM A-Body Pro Rear Coil-Over System - Single Adj. - 12in x 220lbs/in - Aluminum QA1 offers bolt-in Rear Coil-Over Conversion Kits for 1973-1977 GM A-Bodies. These kits include specially designed USA made mounting brackets and single or double adjustable aluminum shocks, springs and all necessary hardware. Single adjustable shocks provide 18 positions of simultaneous rebound and compression adjustment while QA1's double adjustable shocks provide 18 positions of compression adjustment and 18 positions of rebound adjustment, for a total of 324 possible valving combinations. These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling. Specially designed for QA1's Pro Coil Systems, the American-made lightweight high travel springs have fewer coils and a smaller wire diameter, resulting in increased travel due to the larger distance between the coils. They reduce unsprung weight and react faster, optimizing suspension performance. Multiple spring rate options are also available and have been successfully tested in various applications, from casual street driving to hard core race applications. With our highly popular adjustable front coil-over kits and the addition of the rear coil-over conversion kit, you can now get a complete suspension makeover for both ends of the vehicle. Made in the U.S.A., Easy, Bolt-In Installation, No Cutting or Welding, Coil-Over, Ride Height Adjustable, 100% Dyno Tested and Serialized, Rebuildable and Revalveable by the QA1 Factory or QA1 Authorized Service Centers, Kit Will Lower the Vehicle, Conversion Kit Note: Later model vehicles tend to weigh more on average. Please take this into account when ordering springs. Call QA1 tech at 952.985.5675 for questions. Pro Coil Systems include:, 2 Shocks, 2 High Travel Springs, All Mounting Brackets and Hardware. - Ultimate balance of ride quality and performance handling with adjustable rebound and compression valving. - Achieve 1/2 higher than stock down to 2.25" lower than stock. - Limited Lifetime Warranty for peace of mind. - Proudly made in the USA. - Sold as a pair. This Part Fits: Year Make Model Submodel 1973-1977 Buick Regal Base 1976-1977 Buick Regal SR 1973 Chevrolet Chevelle Deluxe 1973-1977 Chevrolet El Camino Base 1975-1977 Chevrolet El Camino Classic 1977 Chevrolet El Camino Conquista 1973-1974 Chevrolet El Camino Custom 1973-1977 Chevrolet El Camino SS 1973-1974 Chevrolet Monte Carlo Base 1973-1974,1976 Chevrolet Monte Carlo Landau 1973,1975-1977 Chevrolet Monte Carlo S 1973-1977 GMC Sprint Base 1975-1977 GMC Sprint Classic 1973-1974 GMC Sprint Custom 1975 GMC Sprint High Sierra 1976 GMC Sprint Sierra Madre Del Sur 1975-1976 GMC Sprint SP 1975,1977 Oldsmobile Cutlass 442 1973-1975 Oldsmobile Cutlass Base 1977 Oldsmobile Cutlass Colonnade 1976-1977 Oldsmobile Cutlass Colonnade S 1973-1977 Oldsmobile Cutlass S 1976-1977 Oldsmobile Cutlass Vista Cruiser 1973-1977 Oldsmobile Cutlass Supreme Base 1977 Oldsmobile Cutlass Supreme Brougham 1976-1977 Oldsmobile Cutlass Supreme Colonnade 1974-1975 Oldsmobile Cutlass Supreme Cruiser 1975 Oldsmobile Cutlass Supreme Hurst 1973-1975 Pontiac Grand Am Base 1973-1974,1976-1977 Pontiac Grand Prix Base 1975,1977 Pontiac Grand Prix LJ 1975-1977 Pontiac Grand Prix SJ 1973-1977 Pontiac LeMans Base 1973-1974 Pontiac LeMans Luxury 1973-1975,1977 Pontiac LeMans Safari 1974 Pontiac LeMans Safari Luxury 1973-1977 Pontiac LeMans Sport ## Details - **Price:** 1246.27 CAD - **Vendor:** QA1 - **Type:** Coilovers ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 1246.27 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Logo Image --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/qa1-73-77-gm-a-body-pro-rear-coil-over-system-single-adj-12in-x-220lbs-in-aluminum) > Updated: 2026-06-27