QA1 GD501-10400C Front Pro Coil Double Adjustable Coilover System GM 400 lb/in

(1970-1981 Chevrolet Camaro; 1970-1981 Pontiac Firebird)

Manufacturer

Part Number

GD501-10400C

6 reviews

Sale Price

$964.95

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Show details for QA1 GD501-10400C Front Pro Coil Double Adjustable Coilover System GM 400 lb/in

Picture of QA1 GD501-10400C Front Pro Coil Double Adjustable Coilover System GM 400 lb/in

QA1 GD501-10400C Front Pro Coil Double Adjustable Coilover System GM 400 lb/in — image 1

QA1 GD501-10400C Front Pro Coil Double Adjustable Coilover System GM 400 lb/in — image 2

QA1 GD501-10400C Front Pro Coil Double Adjustable Coilover System GM 400 lb/in — image 3

QA1 GD501-10400C Front Pro Coil Double Adjustable Coilover System GM 400 lb/in — image 4

Product Details

The QA1 GD501-10400C is a front Pro Coil double adjustable coilover shock system designed for GM muscle cars. This kit delivers a bolt-in solution for upgrading ride height adjustability and precise valving control without requiring cutting or welding — compatible with both factory OE stamped steel control arms and QA1 tubular control arms.

Ride Height Adjustability: The fully threaded shock body provides up to 2 inches of ride height adjustment, allowing you to dial in the perfect stance or fine-tune front-end weight balance. Adjustments are made with a simple turn of the spring seat nut. For drops beyond 2 inches, drop spindles can be added.

Double Adjustable Valving: Independent compression and rebound adjustment knobs — 18 positions of rebound and 18 positions of compression — deliver 324 unique valving combinations. This allows precise tuning whether you're drag racing, autocrossing, road course racing, or daily driving.

Key Features:

Spring Rate: 400 lb/in
Spring Free Length: 10 in. (high-travel, USA-made)
Compressed Height: 10.5 in.
Extended Height: 15 in.
Upper Mount: Stud
Lower Mount: T-Bar
Recommended Front End Weight: 1,801–1,900 lbs
Lightweight billet aluminum shock body construction
Fully threaded body for ride height adjustment
100% dyno tested and serialized
Serviceable and rebuildable by QA1 Authorized Service Centers
Made in the USA (Lakeville, Minnesota)
Sold as a pair

QA1's Pro Coil high-travel springs feature fewer coils and a smaller wire diameter than OEM-style springs, resulting in greater suspension travel and improved performance across street, strip, autocross, and road racing applications. Multiple spring rate options are available for varying vehicle weights and driving styles.

Products specifications

Fits

1970-1981 Chevrolet Camaro; 1970-1981 Pontiac Firebird

Adjustable Mounting Bracket Included

Adjustable Valving

Yes

Coil-Over Kit Position

Front

Coil-Over Springs Included

Yes

Collapsed Length (in)

11.630 in.

Compressed Height

10.5

Crossmember Included

Extended Height

Extended Length (in)

17.000 in.

Gas Charged

Internal Design

Twin-tube

Lower Mount

Bar pin

Notes

Double adjustable coil-overs, designed to fit applications with small block engines. Shocks are remote ready, they can be used with the QA1 two or four channel remote adjustable system.

Number of Valving Selections

324

Quantity

Sold as a kit.

Shock Body Finish

Clear anodized

Shock Body Material

Aluminum

Shocks Included

Yes

Spring Finish

Silver powdercoated

Spring Rate (lbs/in)

400 lbs./in.

Suspension Height Adjustment

0.0-2.0 in. lowered front

Threaded Adjustment Range

3.000 in.

Upper Mount

Stud

Welding Required

Prop 65

WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov

Title

QA1 Shock Absorber and Coil Spring Assembly GD501-10400C

Overall great experience, I ordered on Sunday and got the package on Wednesday!!!

cbinx19

Fast Shipping. Good packaging. Very good pricing. Will shop from again.

mim1979

Great price and received item in a timely and in great condition. Will definitely shop here again!

Angelito

After searching for the best prices for the product that I wanted, I ended up with Autoplicity. I quickly got a response that my product has just been shipped and I am very impressed that Autoplicity is giving me an incentive to write a review on them. This tells me that this company is very concerned with the satisfaction of their customers. I am currently waiting for the order to arrive, but so far, I am extremely confident and happy with Autoplicity!

MYKE-O

Customer Care took care of my return and refunded the shipping after there was some order confusion. Thank you for taking care of everything!

VikingOG

Wow that was fast. I ordered a Pertronix Ignitor conversion kit. Not only were they by far the lowest price I could find, they shipped within hours of submitting the order. I got the shipment in less than 24 hrs, even though I ordered ground shipping. I was a little bummed that they did not offer free shipping, as I am used to with other online places, but with their fast turnaround, I am not begrudging it. Sure it might have been because they have a warehouse nearby, but it was still unexpectedly impressive. The part arrived and looks like it all there and should be good to go. <br><br>I can't vouch for their customer service, but so far I am pleasantly surprised.

Thesparrow

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