QA1 GS401 10450C QA1 Pro Coilover Systems Summit Racing QA1 GS401 10400A QA1 Pro Coilover Systems Summit Racing QA1 Shocks, Coilovers, Springs & Suspension Parts CARiD.com QA1 GS401 10450A: Pro Coil Front Coil Over System Single Adjustable. 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 Ride height adjustability Adjustable shock valving options for all driving styles Easy bolt in install Best in class warranty Made in the USA Attributes: Brand Name: QA1 GTIN: 00806990120335 Active or Passive Suspension: Passive Adjustable Compression: Yes Adjustable Rebound: Yes Adjustable Ride Height: Yes Assembled: No Grade Type: Performance Internal Construction Type: Dual Tube Manufacturer Part Number: GS401 10600B Remote Reservoir: No Spring Color: Silver Spring Material: High Tensile Chrome Silicon UPC: 806990120335 Extended Information: Country of Origin: US Emissions : Emissions Compliance Exempt Packing Information: Quantity of Each: 1 Package UOM: EA Dimension: 25 x 10 x 6 inches Weight: 23. 756 POUNDS PDF: