What is a coil-over shock?

A coil-over shock combines a shock absorber and a coil spring into a single unit. This design allows for adjustable ride height and spring preload, which can be adjusted to fine-tune the vehicle's handling characteristics. They are popular for performance applications where adjustability is desired.

What does 'double adjustable' mean?

Double adjustable shocks allow you to independently adjust the compression and rebound damping. Compression damping controls the shock's resistance to compression, while rebound damping controls the shock's extension. This allows for precise tuning of the suspension to suit different driving conditions and preferences.

Are these shocks rebuildable?

Yes, these QA1 shocks are serviceable and rebuildable by QA1 authorized service centers. Rebuilding can extend the life of the shocks and maintain their performance over time. Contact QA1 directly or an authorized service center for rebuild information.

QA1

QA1 GM Pro Front Coil-Over System - Double Adj. - 10in x 650lbs/in - Flat Large - Aluminum

Name: QA1 GM Pro Front Coil-Over System - Double Adj. - 10in x 650lbs/in - Flat Large - Aluminum
Brand: QA1
Price: 1046.77 USD
Availability: InStock

$1046.77

Adjustable coil-over shocks let you dial in the ride height and valving on your Buick Riviera.

Key Features

Double adjustable — adjust compression and rebound independently
Lightweight billet aluminum — reduces unsprung weight
High travel springs — optimizes suspension performance
Easy, bolt-in installation — no cutting or welding needed
Ride height adjustable — fine-tune your stance
100% dyno tested and serialized — ensures proper function

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Fits this vehicle

Buick Riviera 1963-1965

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Since 1957

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Product Details

QA1 now has GM Pro Coil Systems available for your 1963-1965 Buick Riviera. They offer fully adjustable ride height and valving control. Pick your spring rate and adjustability to fit your driving style, adjust the valving to match and you are on your way. They 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 and simultaneous compression and rebound 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.