QA1 GM Pro Front Coil-Over System - Double Adj. - 10in x 500lbs/in - Flat - Aluminum - GD401-10500B

These QA1 GM Pro Coil Systems are a great 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, Non-Adjustable Pro Coil System Features: Steel, Stock Appearing Coil-Over Shocks, High Travel Springs, Easy, Bolt-In Installation, Ride Height Adjustable, Used in drag racing, street performance, autocross, road racing and street rod applications, Sold in Pairs

This Part Fits:

Year	Make	Model	Submodel
1970,1972	Buick	Skylark	350
1968-1972	Buick	Skylark	Base
1968-1972	Buick	Skylark	Custom
1968-1969	Buick	Special	Base
1968	Chevrolet	Chevelle	300
1968-1969	Chevrolet	Chevelle	300 Deluxe
1968,1970-1972	Chevrolet	Chevelle	Base
1968-1972	Chevrolet	Chevelle	Concours
1969-1972	Chevrolet	Chevelle	Concours Estate
1969-1972	Chevrolet	Chevelle	Greenbrier
1968-1972	Chevrolet	Chevelle	Malibu
1968-1972	Chevrolet	Chevelle	Nomad
1968-1972	Chevrolet	Chevelle	SS
1968-1972	Chevrolet	El Camino	Base
1968-1972	Chevrolet	El Camino	Custom
1968-1972	Chevrolet	El Camino	SS
1971-1972	GMC	Sprint	Base
1972	GMC	Sprint	Custom
1968-1971	Oldsmobile	442	Base
1968-1972	Oldsmobile	Cutlass	Base
1972	Oldsmobile	Cutlass	Cruiser
1968,1971-1972	Oldsmobile	Cutlass	S
1968-1972	Oldsmobile	Vista Cruiser	Base
1968-1972	Pontiac	GTO	Base
1970-1971	Pontiac	GTO	The Judge
1968-1972	Pontiac	LeMans	Base
1972	Pontiac	LeMans	Luxury
1969-1970	Pontiac	LeMans	Safari
1970-1972	Pontiac	LeMans	Sport
1971	Pontiac	LeMans	T37
1968-1970	Pontiac	Tempest	Base
1968-1969	Pontiac	Tempest	Custom
1970	Pontiac	Tempest	GT
1968-1969	Pontiac	Tempest	Safari

Please note product may vary from image, and some parts are special order. If delivery time is a concern, please contact us for stock status before buying.​

About - QA1

Since 1993, QA1 has been an industry leader in High Performance Suspension and Driveline for the automotive aftermarket and various other industries.

QA1 specializes in high-performance suspension components, including shock absorbers, rod ends, spherical bearings, struts, springs, ball joints and other related items. With products to fit a wide variety of applications, they have solutions for the circle track, drag racing, street performance, and street rodding markets.

Coilovers-

​From street to track, seamlessly adjust for any desired performance level. Coilovers deliver a perfect stance and look for your ride. With trusted USA-made quality, backed by a best-in-class warranty, they are a simple, yet significant upgrade for your vehicle.   

Springs- 

​QA1's Pro Coil Systems use uniquely-wound springs specific to various makes and models. These high travel springs are designed for immediate response, increased stability, and enhanced cornering abilities. Durable silver powder coat finish.

Carbon Fiber Drivershafts-

​Changing track conditions don't have to affect your performance. That's why QA1 offers two carbon fiber driveshaft options for super late models, limited late models, and Wissota and IMCA dirt late models. While both provide unmatched performance on any track, they each have their unique features designed to provide extra benefits in specific conditions. Our 3.2'' XMA style driveshaft takes advantage of rough conditions, providing extra alignment to avoid binding. Specifically engineered for tacky or rough conditions, the 3.2" dirt late model carbon fiber driveshafts offer extreme U-joint misalignment (XMA). The tube on this shaft has a higher torsional stiffness that results in less twist, which is great for heavy, fast, or rough tracks where traction isn't limited. The XMA style provides more U-joint misalignment than other designs on the market, and this prevents binding near the pinion yoke, allows more rear suspension articulation and provides more clearance under deceleration, which is especially critical when the car is "on the bars" during corner entry. The driveshafts have a uniform wall thickness created by optimum fiber lay up that ensures high RPM stability as well as extreme torque capacities. A thoroughly engineered surface protection is used to withstand extreme racing environments and provide a worry-free performance. The forged yokes are precision CNC machined and are specially developed for QA1's 11 step bonding procedure that ensures a better balance and minimal material waste. All QA1 driveshafts are precision balanced, track tested and proven. They are lighter, stiffer, stronger and safer than steel or aluminum driveshafts, and available in a variety of lengths and with or without a slip yoke. Custom lengths are also available. Made in the USA.​

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