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QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 550lbs/in - Flat Large - Aluminum - QA1 QAPGS401-10550C
QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 550lbs/in - Flat Large - Aluminum - QA1 QAPGS401-10550C
QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 550lbs/in - Flat Large - Aluminum - QA1 QAPGS401-10550C
QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 550lbs/in - Flat Large - Aluminum - QA1 QAPGS401-10550C
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QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 550lbs/in - Flat Large - Aluminum

QA1
QAPGS401-10550C
806990062185
Coilovers
5 Units In Stock
$ 875.14 $ 748.95
$ 748.95

Build a properly matched suspension or steering setup with this QA1 coilovers. Manufacturer part number GS401-10550C is offered in the listed GM Pro Front Coil-Over System - Single Adj. - 10in x 550lbs/in - Flat Large - Aluminum configuration, so vehicle application, mounting position, dimensions, spring rate, adjustment range, and all notes must be confirmed before ordering.

Key Features

  • High Travel Springs – 10in length with 550lbs/in rate for increased travel and better suspension dynamics.
  • Single Adjustable Valving – Tune compression for custom ride feel from street comfort to track performance.
  • Lightweight Billet Aluminum Shocks – High strength and reduced unsprung weight for improved response.
  • Ride Height Adjustable – Fully threaded body allows precise stance and weight balance tuning.
  • Pair of QA1 Single Adjustable Coil-Over Shocks.
  • #1 choice for adjustable coil-over performance on classic GM vehicles.

Fitment

Years Make Model Submodel or Application
1975 Buick Apollo All listed configurations unless otherwise noted
1975 Buick Apollo SR
1973-1977 Buick Century All listed configurations unless otherwise noted
1975-1977 Buick Century Custom
1976 Buick Century Indianapolis 500 Pace Car
1973-1975 Buick Century Luxus
1975-1977 Buick Century Special
1973-1987 Buick Regal All listed configurations unless otherwise noted
1988 Buick Regal Custom
1982-1983 Buick Regal Estate Wagon
1987 Buick Regal GNX
1984-1987 Buick Regal Grand National
1978-1988 Buick Regal Limited
1982 Buick Regal Limited Turbo
1978-1982 Buick Regal Sport
1976-1977 Buick Regal SR
1983-1986 Buick Regal T-Type
1975-1979 Buick Skylark All listed configurations unless otherwise noted
1978-1979 Buick Skylark Custom
1976-1979 Buick Skylark S
1978 Buick Skylark Sport
1975-1977 Buick Skylark SR
1973 Chevrolet Chevelle Deluxe
1973-1987 Chevrolet El Camino All listed configurations unless otherwise noted
1975-1977 Chevrolet El Camino Classic
1977-1978 Chevrolet El Camino Conquista
1981-1986 Chevrolet El Camino Conquista
1973-1974 Chevrolet El Camino Custom
1979-1981 Chevrolet El Camino Royal Knight
1973-1987 Chevrolet El Camino SS
1978-1981 Chevrolet Malibu All listed configurations unless otherwise noted
1978-1982 Chevrolet Malibu Classic
1978-1980 Chevrolet Malibu Classic Estate
1978-1981 Chevrolet Malibu Classic Landau
1979-1980 Chevrolet Malibu Classic Sport
1979-1980 Chevrolet Malibu Estate
1979 Chevrolet Malibu Landau
1979 Chevrolet Malibu Police
1979-1980 Chevrolet Malibu Sport
1973-1974 Chevrolet Monte Carlo All listed configurations unless otherwise noted
1979 Chevrolet Monte Carlo All listed configurations unless otherwise noted
1981-1988 Chevrolet Monte Carlo All listed configurations unless otherwise noted
1983 Chevrolet Monte Carlo CL
1973-1974 Chevrolet Monte Carlo Landau
1976 Chevrolet Monte Carlo Landau
1978-1981 Chevrolet Monte Carlo Landau
1986-1988 Chevrolet Monte Carlo LS
1973 Chevrolet Monte Carlo S
1975-1977 Chevrolet Monte Carlo S
1978 Chevrolet Monte Carlo Sport
1980 Chevrolet Monte Carlo Sport
1983-1988 Chevrolet Monte Carlo SS
1975-1979 Chevrolet Nova All listed configurations unless otherwise noted
1976-1977 Chevrolet Nova Concours
1975 Chevrolet Nova Custom
1978-1979 Chevrolet Nova Custom
1975 Chevrolet Nova LN
1975-1978 Chevrolet Nova Police
1977-1979 Chevrolet Nova Rally
1976 Chevrolet Nova SS
1982-2003 Chevrolet S-10 All listed configurations unless otherwise noted
1991 Chevrolet S-10 Baja
1982-1990 Chevrolet S-10 Durango
1992-1993 Chevrolet S-10 EL
1994-2004 Chevrolet S-10 LS
1982-1989 Chevrolet S-10 Sport
1994-1998 Chevrolet S-10 SS
1982-1992 Chevrolet S-10 Tahoe
1999-2003 Chevrolet S-10 Xtreme
1994-2003 Chevrolet S-10 ZR2
2002-2004 Chevrolet S-10 ZR5
1981-1987 GMC Caballero All listed configurations unless otherwise noted
1981-1986 GMC Caballero Amarillo
1981 GMC Caballero Conquista
1981-1987 GMC Caballero Diablo
1981 GMC Caballero Royal Knight
1982-1990 GMC S15 All listed configurations unless otherwise noted
1987 GMC S15 EL
1983 GMC S15 Gypsy
1986-1988 GMC S15 Gypsy
1982-1990 GMC S15 High Sierra
1982-1990 GMC S15 Sierra Classic
1982 GMC S15 Sierra Grande
1991-1993 GMC Sonoma All listed configurations unless otherwise noted
1992 GMC Sonoma GT
1994-2004 GMC Sonoma SL
1991-2001 GMC Sonoma SLE
1993-2004 GMC Sonoma SLS
1973-1977 GMC Sprint All listed configurations unless otherwise noted
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
1973-1975 Oldsmobile Cutlass All listed configurations unless otherwise noted
1980 Oldsmobile Cutlass All listed configurations unless otherwise noted
1975 Oldsmobile Cutlass 442
1977 Oldsmobile Cutlass 442
1980-1981 Oldsmobile Cutlass Brougham
1977 Oldsmobile Cutlass Colonnade
1976-1977 Oldsmobile Cutlass Colonnade S
1980-1981 Oldsmobile Cutlass LS
1973-1977 Oldsmobile Cutlass S
1976-1979 Oldsmobile Cutlass Vista Cruiser
1979 Oldsmobile Cutlass Vista Cruiser Brougham
1973-1977 Oldsmobile Cutlass Supreme All listed configurations unless otherwise noted
1977 Oldsmobile Cutlass Supreme Brougham
1976-1977 Oldsmobile Cutlass Supreme Colonnade
1974-1975 Oldsmobile Cutlass Supreme Cruiser
1975 Oldsmobile Cutlass Supreme Hurst
1975-1979 Oldsmobile Omega All listed configurations unless otherwise noted
1976-1979 Oldsmobile Omega Brougham
1978-1979 Oldsmobile Omega Brougham LS
1977 Oldsmobile Omega Deluxe
1976-1977 Oldsmobile Omega F85
1975 Oldsmobile Omega Salon
1976-1978 Oldsmobile Omega SX
1978-1987 Pontiac Bonneville All listed configurations unless otherwise noted
1978-1986 Pontiac Bonneville Brougham
1984-1987 Pontiac Bonneville LE
1978-1981 Pontiac Bonneville Safari
1973-1975 Pontiac Grand Am All listed configurations unless otherwise noted
1978-1980 Pontiac Grand Am All listed configurations unless otherwise noted
1973-1974 Pontiac Grand Prix All listed configurations unless otherwise noted
1976-1987 Pontiac Grand Prix All listed configurations unless otherwise noted
1981-1987 Pontiac Grand Prix Brougham
1984-1987 Pontiac Grand Prix LE
1975 Pontiac Grand Prix LJ
1977-1983 Pontiac Grand Prix LJ
1975-1980 Pontiac Grand Prix SJ
1973-1981 Pontiac LeMans All listed configurations unless otherwise noted
1973-1974 Pontiac LeMans Luxury
1973-1975 Pontiac LeMans Safari
1977-1981 Pontiac LeMans Safari
1974 Pontiac LeMans Safari Luxury
1973-1977 Pontiac LeMans Sport
1977-1979 Pontiac Phoenix All listed configurations unless otherwise noted
1978-1979 Pontiac Phoenix LJ
1978-1979 Pontiac Phoenix SJ
1975-1977 Pontiac Ventura All listed configurations unless otherwise noted
1975 Pontiac Ventura Custom
1975 Pontiac Ventura S
1975-1977 Pontiac Ventura SJ

Confirm chassis configuration, suspension position, drivetrain clearance, brake package, wheel and tire clearance, and every current QA1 application note.

Specifications

Brand QA1
Manufacturer Part Number GS401-10550C
Product Type Coilovers
Listed Configuration GM Pro Front Coil-Over System - Single Adj. - 10in x 550lbs/in - Flat Large - Aluminum
Compatibility Basis Vehicle Specific
Condition New

What's Included

One new QA1 coilovers identified by manufacturer part number GS401-10550C, with only the components and hardware supplied by QA1 for that exact part number.

About QA1

QA1 develops suspension, steering, driveline, rod-end, bearing, spring, and chassis components for street, performance, racing, restoration, and custom vehicle applications.

Related QA1 Products

Frequently Asked Questions

Will QA1 GS401-10550C fit my 1975 Buick Apollo?
Match the complete fitment row, then verify mounting position, suspension configuration, drivetrain clearance, brake package, wheel and tire clearance, and every current QA1 note.

What measurements matter when ordering QA1 GS401-10550C?
Verify the dimensions and interfaces named in this listing, including thread size and direction, extended and compressed length, bore, spring dimensions or rate, mounting style, and available clearance as applicable.

Does QA1 GS401-10550C require setup after installation?
Suspension and steering work commonly requires torque verification, clearance and travel checks, ride-height or damping setup when adjustable, and a professional alignment before road use.

Installation

Follow the current QA1 instructions for this exact part number. Support the vehicle safely, compare every component before disassembly, use the specified hardware and torque values, verify thread engagement and mounting orientation, cycle the suspension through its operating range, check brake and wheel clearance, and complete an alignment when the installation changes suspension or steering geometry.

Request For Information

Have questions about QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 550lbs/in - Flat Large - Aluminum? Fill out the form below and we'll get back to you by the next business day.
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