What is a double-adjustable shock?

A double-adjustable shock allows you to independently adjust the compression and rebound damping. Compression damping controls the shock's resistance to compression, while rebound damping controls the speed at which the shock returns to its extended position. This allows for precise tuning of the suspension to suit different driving conditions and preferences.

What spring rate should I choose?

The included 170 lbs/in spring rate is a good starting point for many G-body applications. However, if you have a later model G-body, it may weigh more than earlier ones, so keep that in mind when choosing springs. Consider your vehicle's weight, intended use (street, track, etc.), and desired ride quality when selecting a spring rate.

Are these shocks rebuildable?

Yes, these QA1 shocks are serviceable and rebuildable by QA1 authorized service centers. This can extend the life of your investment and ensure continued performance. Contact QA1 directly or check their website to find an authorized service center near you.

QA1

QA1 78-88 GM G-Body Pro Rear Coil-Over System - Double Adj. - 12in x 170lbs/in - Aluminum

Name: QA1 78-88 GM G-Body Pro Rear Coil-Over System - Double Adj. - 12in x 170lbs/in - Aluminum
Brand: QA1
Price: 1204.07 USD
Availability: InStock

$1204.07

Bolt-in rear coil-over kit for 1978-1988 GM G-bodies. Double-adjustable shocks let you fine-tune compression and rebound.

Key Features

Double adjustable shocks — Fine-tune compression and rebound
Aluminum shocks — Lightweight
Ride height adjustable — Adjust vehicle stance
Bolt-in installation — Easy to install
Includes mounting brackets and hardware — Complete kit
Made in the USA — Well-built

⚠️ 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

Will this fit your vehicle?

Compatible with 79 vehicles

Need Help?

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Since 1957

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Product Details

QA1 offers bolt-in Rear Coil-Over Conversion Kits for 1978-1988 GM G-Bodies. These kits include specially designed USA made mounting brackets and single or double adjustable aluminum shocks, springs and all necessary hardware. Single adjustable shocks provide 18 positions of simultaneous rebound and compression adjustment while QA1's double adjustable shocks provide 18 positions of compression adjustment and 18 positions of rebound adjustment, for a total of 324 possible valving combinations. These shocks also utilize a fully threaded body allowing for ride height adjustability. Multiple spring rate options are also available, and have been successfully tested in various applications, from casual street driving to hard core race applications. With our highly popular adjustable struts and the addition of the Rear Coil-Over Conversion Kit, you can now get a complete suspension makeover for both ends of the vehicle. These lightweight billet aluminum coil-over shocks are made in the USA and offer easy, bolt-in installation and ride height adjustability. They are 100% dyno tested and serialized and serviceable and rebuildable by QA1 authorized service centers. Used in drag racing, street performance, autocross, road racing and street rod applications. Kit will lower the vehicle. Conversion Kit Note: Later model vehicles tend to weigh more on average. Please take this into account when ordering springs.