SKU: 2658278719

QA1 GM Pro Front Coil-Over System - Double Adj. - 9in x 650lbs/in - Pigtail Large - Aluminum

$540.90 $601.00
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Description

QA1 GM Pro Front Coil-Over System - Double Adj. - 9in x 650lbs/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: 2658278719

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4.5 ★★★★★
Based on 9 reviews
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B
Verified Purchase
BC
Belleville, US
★★★★★ 5
Better Than Expected for an Amazon Essential
These fit well and are more comfortable than I expected. The fabric feels solid and thick, and works well for everyday wear or the office. They’ve held up nicely with regular use and washing. Honestly, they’re surprisingly well made for an Amazon Essentials item. If you want simple, good‑fitting pants without overpaying for a brand name, these are a solid choice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
A
Verified Purchase
Antsy
New York, US
★★★★★ 5
Fit + construction + price = perfection
Ok, I’m not sure why anyone would leave a negative review or why these are high return items, but my experience has been exceptional. My son had been wearing his regular jeans to work (landscaping) and was absolutely destroying them. He needed work pants and he’s hard to fit (29x34) because he’s tall and lanky. I didn’t have a lot of money to spend and because of his odd size, I came straight to Amazon. These pants appeared on my second swipe up and I saw that one color was on sale for $9.99. I originally ordered him 3 pairs of the sale pants, but ordered him 30x34’s because that’s what he wanted. Got them in 2 days with my Prime and they were perfect for his needs, though he needed a 29” waist. My son loves how comfortable they are and he says they’re much cooler than jeans. He can wear the 30’s, but I decided to order him some in his regular size of 29x34. I will say that he probably could have gone down to 33” length, possibly 32”, but with his cowboy boots, the 34” are fine. I’m thinking the pants might be slightly big in the waist and length measurements, so you might want to order one size smaller in both dimensions. They aren’t huge, just maybe an inch bigger. So here I go to order more pants and I saw there were 2 additional colors on sale except these were $6.62. What?!?! I couldn’t believe it! I immediately ordered him 6 additional pairs, 4 of one color and 2 of the other. Those 6 pairs were less than $10 more in total than my first order. I couldn’t believe it because I already knew the pants were well made. They hold up very well during washing and they don’t wrinkle. (Hallelujah!) I mean can you imagine a better deal? The pants are appropriate for dinner, church, work (any kind), really anywhere you’d wear a pair of khakis. I could not be happier with this purchase and urge you to buy them if you’re on the fence. They are totally worth the price, especially if you catch an amazing sale like I did. You’ll be amazed at the quality versus price point and if you manage to get them for $6.62 it’ll make your day! Make sure you check all the colors because they don’t all cost the same. You don’t want to miss an opportunity to get them at rock bottom prices. Trust me, buy them! You won’t regret it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2024
S
Verified Purchase
Sy
Alexandria, US
★★★★★ 4
Nice pants except for one thing.
i really like these pants. The fit is perfect. The material is soft. They are well made and there is even a small pocket within the right side pocket for keys or change so why only 4 stars? I ordered 2 pairs and the 3 buttons are very hard to open and close.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
C
Verified Purchase
Coastn
Natrona Heights, US
★★★★★ 5
Comfy, lightweight, button hole too small
I wear 36 X 36 in Levi and Wrangler jeans so I ordered these in that size. The waist fits fine but the inseam is very generous. I will order another pair 36 X 34 for comparison. These pants are comfortable and lightweight. My only suggestion would be to use a smaller button or make the buttonhole a smidge larger. Maybe this problem will disappear with use, time will tell. I have yet to wear them at the shop so I cannot comment on how well they will hold up, but I bought them because jeans are too tight to allow free movement in, under and around my projects. In that regard I believe they will do just fine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026
D
Verified Purchase
doc
Lake Worth, US
★★★★★ 3
Size does not run true. Have to one or two up your sizing. Well made otherwise.
Run small, nowhere true to size. Had to end up with a two-sizes larger pair. Otherwise, a nice weight, great shade of blue that is true to the photo. Really are wrinkle resistant. Not a lot of stretch, but that’s what he wanted anyway. Can’t speak to durability as we just received them, the material seems of a sturdy quality and is well made without any strings or skipped stitches. These will easily be worn casually or with a blazer. Nice flat front with a straight fit from hips to hem. Once you find your size, these are a great pair of pants.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026

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