{"product_id":"qa1-single-adjustable-gm-pro-front-coil-over-system-10in-400-lb-in-flat-large-billet-aluminum-qapgs401-10400c","title":"QA1 GM Pro Front Coil-Over System Single Adjustable | 1973-2004 Monte Carlo, Malibu, Regal \u0026 El Camino | 10in x 400 lb\/in Flat Large Billet Aluminum | GS401-10400C","description":"\u003cp\u003eThe QA1 GM Pro Front Coil-Over System delivers fully adjustable ride height and valving control for classic GM muscle. Built around a lightweight billet aluminum coil-over shock with a fully threaded body, it lets the ride height be dialed in for the right stance or to fine-tune weight balance for improved handling. The American-made high-travel spring uses fewer coils and a smaller wire diameter for added travel, reduced unsprung weight and faster reaction. This single adjustable version is 100 percent dyno tested and serialized, rebuildable by QA1 authorized service centers, bolts in with factory or upgraded QA1 tubular control arms, and is made in the USA. Sold in pairs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eType: QA1 Pro front coil-over system (sold in pairs)\u003c\/li\u003e\n\u003cli\u003eAdjustability: Single Adjustable (independent valving adjustment)\u003c\/li\u003e\n\u003cli\u003eShock body: Billet Aluminum, fully threaded\u003c\/li\u003e\n\u003cli\u003eSpring: 10in length, 400 lb\/in rate, high-travel\u003c\/li\u003e\n\u003cli\u003eSpring\/mount style: Flat Large\u003c\/li\u003e\n\u003cli\u003eInstallation: bolt-in\u003c\/li\u003e\n\u003cli\u003eWarranty: Limited Lifetime\u003c\/li\u003e\n\u003cli\u003eMade in: USA\u003c\/li\u003e\n\u003cli\u003ePart number: GS401-10400C\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eVehicle Applications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1975 Buick Apollo\u003c\/li\u003e\n\u003cli\u003e1973 Buick Century\u003c\/li\u003e\n\u003cli\u003e1974 Buick Century\u003c\/li\u003e\n\u003cli\u003e1975 Buick Century\u003c\/li\u003e\n\u003cli\u003e1976 Buick Century\u003c\/li\u003e\n\u003cli\u003e1977 Buick Century\u003c\/li\u003e\n\u003cli\u003e1973 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1974 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1975 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1976 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1977 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1978 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1979 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1980 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1981 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1982 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1983 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1984 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1985 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1986 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1987 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1988 Buick Regal\u003c\/li\u003e\n\u003cli\u003e1975 Buick Skylark\u003c\/li\u003e\n\u003cli\u003e1976 Buick Skylark\u003c\/li\u003e\n\u003cli\u003e1977 Buick Skylark\u003c\/li\u003e\n\u003cli\u003e1978 Buick Skylark\u003c\/li\u003e\n\u003cli\u003e1979 Buick Skylark\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet Chevelle\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1980 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1981 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1982 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1983 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1984 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1985 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1986 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1987 Chevrolet El Camino\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet Malibu\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet Malibu\u003c\/li\u003e\n\u003cli\u003e1980 Chevrolet Malibu\u003c\/li\u003e\n\u003cli\u003e1981 Chevrolet Malibu\u003c\/li\u003e\n\u003cli\u003e1982 Chevrolet Malibu\u003c\/li\u003e\n\u003cli\u003e1973 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1974 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1980 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1981 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1982 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1983 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1984 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1985 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1986 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1987 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1988 Chevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003e1975 Chevrolet Nova\u003c\/li\u003e\n\u003cli\u003e1976 Chevrolet Nova\u003c\/li\u003e\n\u003cli\u003e1977 Chevrolet Nova\u003c\/li\u003e\n\u003cli\u003e1978 Chevrolet Nova\u003c\/li\u003e\n\u003cli\u003e1979 Chevrolet Nova\u003c\/li\u003e\n\u003cli\u003e1982 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1983 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1984 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1985 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1986 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1987 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1988 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1989 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1990 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1991 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1992 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1993 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1994 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1995 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1996 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1997 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1998 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1999 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e2000 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e2001 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e2002 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e2003 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e2004 Chevrolet S10\u003c\/li\u003e\n\u003cli\u003e1981 GMC Caballero\u003c\/li\u003e\n\u003cli\u003e1982 GMC Caballero\u003c\/li\u003e\n\u003cli\u003e1983 GMC Caballero\u003c\/li\u003e\n\u003cli\u003e1984 GMC Caballero\u003c\/li\u003e\n\u003cli\u003e1985 GMC Caballero\u003c\/li\u003e\n\u003cli\u003e1986 GMC Caballero\u003c\/li\u003e\n\u003cli\u003e1987 GMC Caballero\u003c\/li\u003e\n\u003cli\u003e1982 GMC S15\u003c\/li\u003e\n\u003cli\u003e1983 GMC S15\u003c\/li\u003e\n\u003cli\u003e1984 GMC S15\u003c\/li\u003e\n\u003cli\u003e1985 GMC S15\u003c\/li\u003e\n\u003cli\u003e1986 GMC S15\u003c\/li\u003e\n\u003cli\u003e1987 GMC S15\u003c\/li\u003e\n\u003cli\u003e1988 GMC S15\u003c\/li\u003e\n\u003cli\u003e1989 GMC S15\u003c\/li\u003e\n\u003cli\u003e1990 GMC S15\u003c\/li\u003e\n\u003cli\u003e1991 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e1992 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e1993 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e1994 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e1995 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e1996 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e1997 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e1998 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e1999 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e2000 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e2001 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e2002 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e2003 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e2004 GMC Sonoma\u003c\/li\u003e\n\u003cli\u003e1973 GMC Sprint\u003c\/li\u003e\n\u003cli\u003e1974 GMC Sprint\u003c\/li\u003e\n\u003cli\u003e1975 GMC Sprint\u003c\/li\u003e\n\u003cli\u003e1976 GMC Sprint\u003c\/li\u003e\n\u003cli\u003e1977 GMC Sprint\u003c\/li\u003e\n\u003cli\u003e1973 Oldsmobile Cutlass\u003c\/li\u003e\n\u003cli\u003e1974 Oldsmobile Cutlass\u003c\/li\u003e\n\u003cli\u003e1975 Oldsmobile Cutlass\u003c\/li\u003e\n\u003cli\u003e1976 Oldsmobile Cutlass\u003c\/li\u003e\n\u003cli\u003e1977 Oldsmobile Cutlass\u003c\/li\u003e\n\u003cli\u003e1978 Oldsmobile Cutlass\u003c\/li\u003e\n\u003cli\u003e1979 Oldsmobile Cutlass\u003c\/li\u003e\n\u003cli\u003e1980 Oldsmobile Cutlass\u003c\/li\u003e\n\u003cli\u003e1981 Oldsmobile Cutlass\u003c\/li\u003e\n\u003cli\u003e1973 Oldsmobile Cutlass Supreme\u003c\/li\u003e\n\u003cli\u003e1974 Oldsmobile Cutlass Supreme\u003c\/li\u003e\n\u003cli\u003e1975 Oldsmobile Cutlass Supreme\u003c\/li\u003e\n\u003cli\u003e1976 Oldsmobile Cutlass Supreme\u003c\/li\u003e\n\u003cli\u003e1977 Oldsmobile Cutlass Supreme\u003c\/li\u003e\n\u003cli\u003e1975 Oldsmobile Omega\u003c\/li\u003e\n\u003cli\u003e1976 Oldsmobile Omega\u003c\/li\u003e\n\u003cli\u003e1977 Oldsmobile Omega\u003c\/li\u003e\n\u003cli\u003e1978 Oldsmobile Omega\u003c\/li\u003e\n\u003cli\u003e1979 Oldsmobile Omega\u003c\/li\u003e\n\u003cli\u003e1978 Pontiac Bonneville\u003c\/li\u003e\n\u003cli\u003e1979 Pontiac Bonneville\u003c\/li\u003e\n\u003cli\u003e1980 Pontiac Bonneville\u003c\/li\u003e\n\u003cli\u003e1981 Pontiac Bonneville\u003c\/li\u003e\n\u003cli\u003e1982 Pontiac Bonneville\u003c\/li\u003e\n\u003cli\u003e1983 Pontiac Bonneville\u003c\/li\u003e\n\u003cli\u003e1984 Pontiac Bonneville\u003c\/li\u003e\n\u003cli\u003e1985 Pontiac Bonneville\u003c\/li\u003e\n\u003cli\u003e1986 Pontiac Bonneville\u003c\/li\u003e\n\u003cli\u003e1987 Pontiac Bonneville\u003c\/li\u003e\n\u003cli\u003e1973 Pontiac Grand Am\u003c\/li\u003e\n\u003cli\u003e1974 Pontiac Grand Am\u003c\/li\u003e\n\u003cli\u003e1975 Pontiac Grand Am\u003c\/li\u003e\n\u003cli\u003e1978 Pontiac Grand Am\u003c\/li\u003e\n\u003cli\u003e1979 Pontiac Grand Am\u003c\/li\u003e\n\u003cli\u003e1980 Pontiac Grand Am\u003c\/li\u003e\n\u003cli\u003e1973 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1974 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1975 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1976 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1977 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1978 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1979 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1980 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1981 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1982 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1983 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1984 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1985 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1986 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1987 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1973 Pontiac LeMans\u003c\/li\u003e\n\u003cli\u003e1974 Pontiac LeMans\u003c\/li\u003e\n\u003cli\u003e1975 Pontiac LeMans\u003c\/li\u003e\n\u003cli\u003e1976 Pontiac LeMans\u003c\/li\u003e\n\u003cli\u003e1977 Pontiac LeMans\u003c\/li\u003e\n\u003cli\u003e1978 Pontiac LeMans\u003c\/li\u003e\n\u003cli\u003e1979 Pontiac LeMans\u003c\/li\u003e\n\u003cli\u003e1980 Pontiac LeMans\u003c\/li\u003e\n\u003cli\u003e1981 Pontiac LeMans\u003c\/li\u003e\n\u003cli\u003e1977 Pontiac Phoenix\u003c\/li\u003e\n\u003cli\u003e1978 Pontiac Phoenix\u003c\/li\u003e\n\u003cli\u003e1979 Pontiac Phoenix\u003c\/li\u003e\n\u003cli\u003e1975 Pontiac Ventura\u003c\/li\u003e\n\u003cli\u003e1976 Pontiac Ventura\u003c\/li\u003e\n\u003cli\u003e1977 Pontiac Ventura\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003ca href=\"https:\/\/d32vzsop7y1h3k.cloudfront.net\/9b6fbad111a2499d056e81f784a08e9e.PDF\"\u003eInstallation Instructions\u003c\/a\u003e\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat does QA1 part number GS401-10400C fit?\u003c\/h5\u003e\u003cp\u003eQA1 GS401-10400C is listed to fit 1973-2004 Monte Carlo, Malibu, Regal \u0026amp; El Camino. The Vehicle Applications list above shows the individual years, makes and models from the QA1 fitment data for this part.\u003c\/p\u003e\u003ch5\u003eIs this coil-over single or double adjustable?\u003c\/h5\u003e\u003cp\u003eThis is the single adjustable version, which adjusts compression and rebound valving together through one adjustment for simple tuning.\u003c\/p\u003e\u003ch5\u003eWhat spring is included?\u003c\/h5\u003e\u003cp\u003eIt is supplied with a QA1 high-travel spring measuring 10in in length with a 400 lb\/in spring rate.\u003c\/p\u003e\u003ch5\u003eCan ride height be adjusted?\u003c\/h5\u003e\u003cp\u003eYes. The fully threaded shock body allows the ride height to be adjusted to set the stance or fine-tune weight balance.\u003c\/p\u003e\u003ch5\u003eIs professional installation required?\u003c\/h5\u003e\u003cp\u003eThe system is designed as a bolt-in installation using standard hand tools, so no welding or fabrication is required for a typical fitment.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does QA1 part number GS401-10400C fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"QA1 GS401-10400C is listed to fit 1973-2004 Monte Carlo, Malibu, Regal \u0026 El Camino. The Vehicle Applications list above shows the individual years, makes and models from the QA1 fitment data for this part.\"}}, {\"@type\": \"Question\", \"name\": \"Is this coil-over single or double adjustable?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This is the single adjustable version, which adjusts compression and rebound valving together through one adjustment for simple tuning.\"}}, {\"@type\": \"Question\", \"name\": \"What spring is included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is supplied with a QA1 high-travel spring measuring 10in in length with a 400 lb\/in spring rate.\"}}, {\"@type\": \"Question\", \"name\": \"Can ride height be adjusted?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The fully threaded shock body allows the ride height to be adjusted to set the stance or fine-tune weight balance.\"}}, {\"@type\": \"Question\", \"name\": \"Is professional installation required?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The system is designed as a bolt-in installation using standard hand tools, so no welding or fabrication is required for a typical fitment.\"}}]}\u003c\/script\u003e","brand":"QA1","offers":[{"title":"Default Title","offer_id":43481554714672,"sku":"QAPGS401-10400C","price":789.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/5ca8728ba07ffc3666bc60fb881e98dd_b9c86d72-bfd6-4b11-89ea-bfecaac52f31.jpg?v=1786507074","url":"https:\/\/berryperformancesales.com\/products\/qa1-single-adjustable-gm-pro-front-coil-over-system-10in-400-lb-in-flat-large-billet-aluminum-qapgs401-10400c","provider":"Berry Performance Sales","version":"1.0","type":"link"}