QA1 GM Pro Front Coil-Over System - MOD Series - 10in x 550lbs/in - Flat Large - Aluminum - MG507-10550C

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.

This Part Fits:

Year	Make	Model	Submodel
1958-1975	Chevrolet	Bel Air	Base
1958-1972	Chevrolet	Biscayne	Base
1960	Chevrolet	Biscayne	Fleetmaster
1966-1972,1986-1991	Chevrolet	Caprice	Base
1973-1991	Chevrolet	Caprice	Classic
1986-1990	Chevrolet	Caprice	Classic Brougham
1976-1978,1981-1982	Chevrolet	Caprice	Classic Estate
1976-1981	Chevrolet	Caprice	Classic Landau
1987-1990	Chevrolet	Caprice	Classic LS Brougham
1991	Chevrolet	Caprice	Classic LTZ
1975-1976,1979-1980	Chevrolet	Caprice	Classic Sport
1973-1974	Chevrolet	Caprice	Estate
1975	Chevrolet	Caprice	Estate Wagon
1958	Chevrolet	Del Ray	Base
1971-1985	Chevrolet	Impala	Base
1975-1977	Chevrolet	Impala	Custom
1976	Chevrolet	Impala	Custom Landau
1981-1982	Chevrolet	Impala	Estate
1977-1979	Chevrolet	Impala	Landau
1976	Chevrolet	Impala	S
1975-1976,1979-1980	Chevrolet	Impala	Sport
1994-1996	Chevrolet	Impala	SS
1960	Edsel	Ranger	Base
1960-1964	Ford	Galaxie	Base
1961	Ford	Galaxie	Club Victoria
1960	Ford	Galaxie	Special
1961	Ford	Galaxie	Starliner
1961	Ford	Galaxie	Sunliner
1961	Ford	Galaxie	Town Victoria
1960,1963	Mercury	Country Cruiser	Base
1963-1964	Mercury	Marauder	Base
1961	Mercury	Meteor	600
1961-1963	Mercury	Meteor	Base
1962-1963	Mercury	Meteor	Custom
1962-1963	Mercury	Meteor	S-33
1960-1964	Mercury	Monterey	Base
1962-1963	Mercury	Monterey	Custom
1962	Mercury	Monterey	Custom S-55
1963	Mercury	Monterey	S-55

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Please note image may vary from product. Also, some items are special order. If delivery time is a concern, please contact us prior to purchase. 

Fidanza Performance is excited to offer QA1 Suspension

About - QA1 Suspension​

QA1 Precision Products, Inc., founded in 1993 and based in Lakeville, Minnesota, is a leading American manufacturer of high-performance suspension and driveline components. The company is known for producing quality coil-over kits, control arms, sway bars, adjustable shocks, and carbon fiber driveshafts, primarily for muscle cars, classic trucks, drag racing, and pro-touring builds.

QA1 stands out for its in-house engineering and manufacturing, with most products made in the USA. Their suspension systems are especially popular among enthusiasts looking to modernize older vehicles like Chevelles, Mustangs, and classic GM and Ford trucks. Known for their adjustability and durability, QA1 products are widely respected across both street and track applications.

With a strong reputation for quality and performance, QA1 supports the automotive community through events, sponsorships, and their annual open house. Their accessible performance upgrades have made them a trusted name in the aftermarket suspension world.

Fidanza Performance, founded in 1997, is a leading US manufacturer of high-quality lightweight aluminum flywheels, precision adjustable cam gears, and high-performance clutches. With nearly 20 years in the automotive performance market, Fidanza is renowned for its expertise and respected globally, offering products for a wide range of vehicles, from European sports cars to modern muscle cars and imports. The company originated in racing, with founder Lou Fidanza's success in the SCCA leading to the creation of specialty parts like aluminum flywheels. Fidanza has since expanded its product line to include cam gears and performance clutches, gaining a loyal customer base and worldwide recognition. In 2023 Fidanza opened the SpeedParts4Less Marketplace which sells other manufacturers quality high performance parts!