SKU: 11994816600

QA1 GM Pro Front Coil-Over System - Double Adj. - 9in x 450lbs/in - Pigtail Large - Aluminum

Sale price$540.90 Regular price$601.00
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Description

QA1 GM Pro Front Coil-Over System - Double Adj. - 9in x 450lbs/in - Pigtail Large - AluminumQA1's GM Pro Coil Systems are available for 1963 1982 Corvettes and for 1958 1970 Full Size Chevrolet vehicles, including Impalas, Bel Airs and Caprices. They are the perfect 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

QA1's GM Pro Coil Systems are available for 1963-1982 Corvettes and for 1958-1970 Full Size Chevrolet vehicles, including Impalas, Bel Airs and Caprices. They are the perfect 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

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
1963-1974,1977-1982 Chevrolet Corvette Base
1982 Chevrolet Corvette Collector's Edition
1978 Chevrolet Corvette Indianapolis 500 Pace Car
1978 Chevrolet Corvette Silver Anniversary Edition
1975-1976 Chevrolet Corvette Stingray
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
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 11994816600

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4.3 ★★★★★
Based on 16 reviews
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B
Verified Purchase
Beloved
Grantham, US
★★★★★ 5
Well worth it. Great product.
Size: 1 Kit, Size: 1 Kit
For the inexpensive price it’s worth its weight in gold. I admittedly probably didn’t work on it as long or as hard as I should have, but I still had great results. *** One warning: when it says to “tape up and cover your paint around it” do it! I figured I would just be careful but no I was wrong. It will REALLY damage your paint, so make sure you don’t get any on it. YES- This is the sanding discs too! They have chemicals on them, they are not regular discs. If you do get on paint, clean immediately! My only regret with this project and my fault, not theirs. My headlights went from dingy yellow, to much brighter and definitely more clear. Love the results. Very happy with the purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
K
Verified Purchase
Kamau Kalai
Louisville, US
★★★★★ 5
Great for the price
Size: 1 Kit, Size: 1 Kit
Worked great at clearing my headlights and at a great price, I had used a different headlight kit maybe 5-6 months before and it did not perform as good as this kit did, maybe it was a user error with the previous kit but this one cleared it easily and was very easy to do and had a nice clear shine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
D
Verified Purchase
Dre
Charlottesville, US
★★★★★ 5
Good stuff!
Size: 1 Kit
Good product, made a big difference. Easy to apply, Will buy again when needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
C
Verified Purchase
CupcakeDivaKC
Alexandria, US
★★★★★ 4
I'm Not Disappointed ...
Size: 1 Kit, Size: 1 Kit
I knew going in that my expectations shouldn't be very high because my car is a first generation 2010 Kia Soul. So its old with 16 plus years of yellowing oxidation and some abrasion. I took a chance with doing this because of the reviews and pictures. To my surprise, it worked better than I anticipated and could hope for. My driver side(left) headlight was horrible but my passenger side(right) wasn't too shabby and didn't require as much care. This would have turned out better if I had power drill attachments of the same sanding grit to do this. My arm is going to be really sore come Sunday. 😆 It wasn't too hard to follow the instructions as they were very simple for the application process. I don't know about the 2 years for it lasting, but for now, its durable. Once I drive at night, I'll be able to But all in all, it worked for me and its better than before I tackled it. All in all it looks good, I feel like I'll have a better beam when night 🌙 driving.
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Reviewed in the United States on May 2, 2026
K
Verified Purchase
Kflo
Houston, US
★★★★★ 5
Works great. Definitely a good buy and value.
Size: 1 Kit
This was easy to use and made a world of difference on the lenses.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026

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