QA1 GM Pro Front Coil-Over System - Double Adj. - 10in x 550lbs/in - Flat Large - Aluminum

Front Pro Coil double adjustable stock mount shock kit. Compressed length of 9.63" and extended length of 14.5". Includes 10" spring with rating of 550. These QA1 GM Pro Coil Systems are available for 1971-1996 Impalas and Full Size GM vehicles, including Full Size Chevy, Buick, Oldsmobile and Pontiac models, and even Ford full size vehicles and Galaxies. They are a great option for anyone looking for fully adjustable ride height and valving control. Choose a spring rate and adjustability that fits your driving style, adjust the valving to match and you are on your way. 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. Adjustable Pro Coil System Features: Available in independent compression and rebound double adjustable, simultaneous compression and rebound adjustable, or drag "R" Series adjustable, Lightweight Billet Aluminum Coil-Over Shocks, High Travel Springs, Easy, Bolt-In Installation, Ride Height Adjustable, 100% Dyno Tested and Serialized, Serviceable and Rebuildable by QA1 Authorized Service Centers, Made in the USA, Used in drag racing, street performance, autocross, road racing and street rod applications, Sold in Pairs, .

• Achieve the ultimate balance of ride quality and performance handling with independent tuning of rebound and compression valving.
• Easy bolt-in installation that works with your factory or upgraded QA1 tubular control arms.
• Up to 2 of ride height adjustment allows you to dial in the perfect stance.
• Limited Lifetime Warranty for peace of mind.
• Proudly made in the USA

The QA1 GM Pro Front Coil-Over System with part number QAPGD507-10550C offers a high-performance suspension upgrade designed for 1971-1996 Chevrolet Impalas and other full-size GM vehicles, including Buick, Oldsmobile, Pontiac, and even select Ford models like the Galaxie. This system features fully adjustable coil-over shocks with double adjustable compression and rebound valving, allowing precise tuning for an optimal balance between ride comfort and handling response.
Each shock utilizes a lightweight billet aluminum body with a fully threaded design for effortless ride height adjustments, enabling you to achieve your desired stance or fine-tune weight transfer for improved cornering and stability. The included high-travel springs, rated at 550 lbs/in, are designed with fewer coils and a smaller wire diameter, providing increased travel and faster reaction times, which translates into enhanced performance on both street and race tracks.
Installation is straightforward, with bolt-in compatibility for factory or upgraded control arms, making it suitable for street performance, autocross, drag racing, or street rod applications. The shocks are 100% dyno tested and serialized for quality assurance, and they are serviceable and rebuildable at authorized QA1 service centers, ensuring long-term reliability. Made in the USA, these coil-overs are built for durability and performance, backed by a limited lifetime warranty for peace of mind.
Whether you want to improve your vehicle's stance, handling, or both, the QA1 GM Pro Coil-Over System provides versatile adjustability and superior suspension control. With multiple spring rates available, you can select the setup that best matches your driving style, from casual street cruising to aggressive racing. The system's design reduces unsprung weight and reacts faster, delivering a noticeable upgrade in vehicle dynamics and ride quality.
Achieve a customized ride with easy height adjustments and precise damping control, all while enjoying the benefits of American-made quality craftsmanship. This coil-over system is an ideal upgrade for enthusiasts looking to optimize their full-size GM vehicle's suspension and handling performance.

Features:

• Independent tuning of rebound and compression valving for optimal ride quality and handling.

• Easy bolt-in installation compatible with factory or upgraded control arms.

• Up to 2 inches of ride height adjustment for perfect stance customization.

• Lightweight billet aluminum coil-over shocks designed for high travel and responsiveness.

• Includes high-rate 10-inch springs rated at 550 lbs/in for enhanced performance.

• Fully threaded shock bodies allow precise ride height adjustments.

• 100% dyno tested and serialized for quality assurance and consistency.

• Serviceable and rebuildable by QA1 authorized centers for long-term reliability.

• Made in the USA with durable construction suitable for street, autocross, drag, and road racing.

Fitment:
Chevrolet Bel Air Base 1958
Chevrolet Bel Air Base 1959
Chevrolet Bel Air Base 1960
Chevrolet Bel Air Base 1961
Chevrolet Bel Air Base 1962
Chevrolet Bel Air Base 1963
Chevrolet Bel Air Base 1964
Chevrolet Bel Air Base 1965
Chevrolet Bel Air Base 1966
Chevrolet Bel Air Base 1967
Chevrolet Bel Air Base 1968
Chevrolet Bel Air Base 1969
Chevrolet Bel Air Base 1970
Chevrolet Bel Air Base 1971
Chevrolet Bel Air Base 1972
Chevrolet Bel Air Base 1973
Chevrolet Bel Air Base 1974
Chevrolet Bel Air Base 1975
Chevrolet Biscayne Base 1958
Chevrolet Biscayne Base 1959
Chevrolet Biscayne Base 1960
Chevrolet Biscayne Base 1961
Chevrolet Biscayne Base 1962
Chevrolet Biscayne Base 1963
Chevrolet Biscayne Base 1964
Chevrolet Biscayne Base 1965
Chevrolet Biscayne Base 1966
Chevrolet Biscayne Base 1967
Chevrolet Biscayne Base 1968
Chevrolet Biscayne Base 1969
Chevrolet Biscayne Base 1970
Chevrolet Biscayne Base 1971
Chevrolet Biscayne Base 1972
Chevrolet Biscayne Fleetmaster 1960
Chevrolet Caprice Base 1966
Chevrolet Caprice Base 1967
Chevrolet Caprice Base 1968
Chevrolet Caprice Base 1969
Chevrolet Caprice Base 1970
Chevrolet Caprice Base 1971
Chevrolet Caprice Base 1972
Chevrolet Caprice Base 1986
Chevrolet Caprice Base 1987
Chevrolet Caprice Base 1988
Chevrolet Caprice Base 1989
Chevrolet Caprice Base 1990
Chevrolet Caprice Base 1991
Chevrolet Caprice Classic 1973
Chevrolet Caprice Classic 1974
Chevrolet Caprice Classic 1975
Chevrolet Caprice Classic 1976
Chevrolet Caprice Classic 1977
Chevrolet Caprice Classic 1978
Chevrolet Caprice Classic 1979
Chevrolet Caprice Classic 1980
Chevrolet Caprice Classic 1981
Chevrolet Caprice Classic 1982
Chevrolet Caprice Classic 1983
Chevrolet Caprice Classic 1984
Chevrolet Caprice Classic 1985
Chevrolet Caprice Classic 1986
Chevrolet Caprice Classic 1987
Chevrolet Caprice Classic 1988
Chevrolet Caprice Classic 1989
Chevrolet Caprice Classic 1990
Chevrolet Caprice Classic 1991
Chevrolet Caprice Classic Brougham 1986
Chevrolet Caprice Classic Brougham 1987
Chevrolet Caprice Classic Brougham 1988
Chevrolet Caprice Classic Brougham 1989
Chevrolet Caprice Classic Brougham 1990
Chevrolet Caprice Classic Estate 1976
Chevrolet Caprice Classic Estate 1977
Chevrolet Caprice Classic Estate 1978
Chevrolet Caprice Classic Estate 1981
Chevrolet Caprice Classic Estate 1982
Chevrolet Caprice Classic Landau 1976
Chevrolet Caprice Classic Landau 1977
Chevrolet Caprice Classic Landau 1978
Chevrolet Caprice Classic Landau 1979
Chevrolet Caprice Classic Landau 1980
Chevrolet Caprice Classic Landau 1981
Chevrolet Caprice Classic LS Brougham 1987
Chevrolet Caprice Classic LS Brougham 1988
Chevrolet Caprice Classic LS Brougham 1989
Chevrolet Caprice Classic LS Brougham 1990
Chevrolet Caprice Classic LTZ 1991
Chevrolet Caprice Classic Sport 1975
Chevrolet Caprice Classic Sport 1976
Chevrolet Caprice Classic Sport 1979
Chevrolet Caprice Classic Sport 1980
Chevrolet Caprice Estate 1973
Chevrolet Caprice Estate 1974
Chevrolet Caprice Estate Wagon 1975
Chevrolet Del Ray Base 1958
Chevrolet Impala Base 1971
Chevrolet Impala Base 1972
Chevrolet Impala Base 1973
Chevrolet Impala Base 1974
Chevrolet Impala Base 1975
Chevrolet Impala Base 1976
Chevrolet Impala Base 1977
Chevrolet Impala Base 1978
Chevrolet Impala Base 1979
Chevrolet Impala Base 1980
Chevrolet Impala Base 1981
Chevrolet Impala Base 1982
Chevrolet Impala Base 1983
Chevrolet Impala Base 1984
Chevrolet Impala Base 1985
Chevrolet Impala Custom 1975
Chevrolet Impala Custom 1976
Chevrolet Impala Custom 1977
Chevrolet Impala Custom Landau 1976
Chevrolet Impala Estate 1981
Chevrolet Impala Estate 1982
Chevrolet Impala Landau 1977
Chevrolet Impala Landau 1978
Chevrolet Impala Landau 1979
Chevrolet Impala S 1976
Chevrolet Impala Sport 1975
Chevrolet Impala Sport 1976
Chevrolet Impala Sport 1979
Chevrolet Impala Sport 1980
Chevrolet Impala SS 1994
Chevrolet Impala SS 1995
Chevrolet Impala SS 1996
Edsel Ranger Base 1960
Ford Galaxie Base 1960
Ford Galaxie Base 1961
Ford Galaxie Base 1962
Ford Galaxie Base 1963
Ford Galaxie Base 1964
Ford Galaxie Club Victoria 1961
Ford Galaxie Special 1960
Ford Galaxie Starliner 1961
Ford Galaxie Sunliner 1961
Ford Galaxie Town Victoria 1961
Mercury Country Cruiser Base 1960
Mercury Country Cruiser Base 1963
Mercury Marauder Base 1963
Mercury Marauder Base 1964
Mercury Meteor 600 1961
Mercury Meteor Base 1961
Mercury Meteor Base 1962
Mercury Meteor Base 1963
Mercury Meteor Custom 1962
Mercury Meteor Custom 1963
Mercury Meteor S-33 1962
Mercury Meteor S-33 1963
Mercury Monterey Base 1960
Mercury Monterey Base 1961
Mercury Monterey Base 1962
Mercury Monterey Base 1963
Mercury Monterey Base 1964
Mercury Monterey Custom 1962
Mercury Monterey Custom 1963
Mercury Monterey Custom S-55 1962
Mercury Monterey S-55 1963