QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 450lbs/in - Flat Large - Aluminum

Front Pro Coil single adjustable stock mount shock kit. Compressed length of 8.63" and extended length of 12.88". Includes 10" spring with rating of 450 and has a large tapered flat end. 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

• QA1 uniquely engineered to enhance the performance of your vehicle
• Adjustable shock valving options for all driving styles
• Ride height adjustability
• Best-in-class warranty
• Easy bolt-in install
• Made in the USA

Upgrade your GM vehicle’s suspension with the QA1 GM Pro Front Coil-Over System, Part Number qapGS401-10450C. This single-adjustable front coil-over shock kit is engineered to provide precise ride-height control and adjustable valving, helping you tailor suspension performance to your driving style. The kit includes a 10-inch spring with a 450 lb/in spring rate and a large tapered flat end for a secure, application-specific fit.
The fully threaded shock body allows accurate ride-height adjustment for stance tuning, corner-weight balancing, and improved handling. With a compressed length of 8.63 inches and an extended length of 12.88 inches, the system provides useful suspension travel for street performance, autocross, road racing, drag racing, and street rod applications. QA1’s lightweight, high-travel springs use fewer coils and a smaller wire diameter to increase available travel, reduce unsprung weight, and promote faster suspension response.
Designed for straightforward bolt-in installation, this QA1 Pro Coil System combines durable construction with serviceable suspension components. The shocks are dyno tested and supported by adjustable valving options suited to a broad range of driving demands. QA1 manufactures this system in the USA and offers rebuild and service support through authorized service centers. This product is covered by California Proposition 65 requirements.

• QA1 uniquely engineered to enhance the performance of your vehicle


• Single-adjustable shock valving for suspension tuning


• Fully threaded body for ride-height adjustment


• 450 lb/in spring rate for performance-oriented applications


• Large tapered flat spring end


• High-travel spring design helps reduce unsprung weight


• Easy bolt-in installation


• Made in the USA

Features:

• Brand: QA1

• Part Number: qapGS401-10450C

• Application: GM front Pro Coil-over system

• Adjustment: Single-adjustable shock valving

• Spring: 10-inch spring with a 450 lb/in spring rate

• Spring End: Large tapered flat end

• Ride Height: Adjustable through the fully threaded shock body

• Shock Travel: 8.63-inch compressed length and 12.88-inch extended length

• Installation: Bolt-in design

• Manufacturing: Made in the USA