# QA1 73-77 GM A-Body Pro Rear Coil-Over System - MOD Series - 12in x 170lbs/in - Aluminum soft or firm compression and rebound valve packs also available. Once the desired valving is in place, the unique double adjustable design, with adjustable low-speed bleed, allows for fully independent control over the compression and rebound characteristics. With all these adjustability options, the MOD Series shock achieves an expansive force curve capability and an unprecedented level of tunability. The shock also features mounting adjustability to accommodate a variety of vehicles and mounting configurations. The nitrogen-charged canister is available in a piggyback or remote configuration for ease of installation in tight areas, and the base eyelet is indexable, so you can unbolt it and reattach it at the angle you need for the best shock and canister placement. Like all QA1 shocks, the MOD Series shock is 100% dyno tested and serialized and proudly made in QA1's Lakeville, Minnesota facility. - 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:** 3078.01 CAD - **Vendor:** QA1 - **Type:** Coilovers ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 3078.01 CAD | In stock | ## Images - Photo - Primary - Logo Image --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/qa1-73-77-gm-a-body-pro-rear-coil-over-system-mod-series-12in-x-170lbs-in-aluminum) > Updated: 2026-06-27