{"product_id":"qa1-99-06-chevrolet-silverado-pro-front-coil-over-system-single-adj-10in-x-650lbs-in-aluminum","title":"QA1 99-06 Chevrolet Silverado Pro Front Coil-Over System - Single Adj. - 10in x 650lbs\/in - Aluminum","description":"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 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, 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\nFront Pro Coil single adjustable stock mount shock kit. Compressed length of 9.63\" and extended length of 14.5\". Includes 10\" spring with rating of 650 for use on 99-06 Silverados\/Sierras.\nThese 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\n\u003cul\u003e\n  \u003cli\u003eAchieve the ultimate balance of ride quality and performance with simultanious adjustment of rebound and compression valving.\u003c\/li\u003e\n  \u003cli\u003eEasy bolt-in installation that works with your factory or upgraded QA1 tubular control arms.\u003c\/li\u003e\n  \u003cli\u003eUp to 2 of ride height adjustment allows you to dial in the perfect stance.\u003c\/li\u003e\n  \u003cli\u003eLimited Lifetime Warranty for peace of mind.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n1999 Chevrolet Silverado 1500 Base\u003cbr\u003e\n1999 Chevrolet Silverado 1500 LS\u003cbr\u003e\n1999 Chevrolet Silverado 1500 LT\u003cbr\u003e\n1999 GMC Sierra 1500 SL\u003cbr\u003e\n1999 GMC Sierra 1500 SLE\u003cbr\u003e\n1999 GMC Sierra 1500 SLT\u003cbr\u003e\n2000 Chevrolet Silverado 1500 Base\u003cbr\u003e\n2000 Chevrolet Silverado 1500 LS\u003cbr\u003e\n2000 Chevrolet Silverado 1500 LT\u003cbr\u003e\n2000 GMC Sierra 1500 SL\u003cbr\u003e\n2000 GMC Sierra 1500 SLE\u003cbr\u003e\n2000 GMC Sierra 1500 SLT\u003cbr\u003e\n2001 Chevrolet Silverado 1500 Base\u003cbr\u003e\n2001 Chevrolet Silverado 1500 LS\u003cbr\u003e\n2001 Chevrolet Silverado 1500 LT\u003cbr\u003e\n2001 GMC Sierra 1500 C3\u003cbr\u003e\n2001 GMC Sierra 1500 SL\u003cbr\u003e\n2001 GMC Sierra 1500 SLE\u003cbr\u003e\n2001 GMC Sierra 1500 SLT\u003cbr\u003e\n2002 Chevrolet Silverado 1500 Base\u003cbr\u003e\n2002 Chevrolet Silverado 1500 LS\u003cbr\u003e\n2002 Chevrolet Silverado 1500 LT\u003cbr\u003e\n2002 Chevrolet Silverado 1500 WT\u003cbr\u003e\n2002 GMC Sierra 1500 Base\u003cbr\u003e\n2002 GMC Sierra 1500 Denali\u003cbr\u003e\n2002 GMC Sierra 1500 HT\u003cbr\u003e\n2002 GMC Sierra 1500 SL\u003cbr\u003e\n2002 GMC Sierra 1500 SLE\u003cbr\u003e\n2002 GMC Sierra 1500 SLT\u003cbr\u003e\n2002 GMC Sierra 1500 WT\u003cbr\u003e\n2003 Chevrolet Silverado 1500 Base\u003cbr\u003e\n2003 Chevrolet Silverado 1500 LS\u003cbr\u003e\n2003 Chevrolet Silverado 1500 LT\u003cbr\u003e\n2003 Chevrolet Silverado 1500 SS\u003cbr\u003e\n2003 Chevrolet Silverado 1500 WT\u003cbr\u003e\n2003 GMC Sierra 1500 Base\u003cbr\u003e\n2003 GMC Sierra 1500 Denali\u003cbr\u003e\n2003 GMC Sierra 1500 SL\u003cbr\u003e\n2003 GMC Sierra 1500 SLE\u003cbr\u003e\n2003 GMC Sierra 1500 SLT\u003cbr\u003e\n2003 GMC Sierra 1500 WT\u003cbr\u003e\n2004 Chevrolet Silverado 1500 Base\u003cbr\u003e\n2004 Chevrolet Silverado 1500 Hybrid\u003cbr\u003e\n2004 Chevrolet Silverado 1500 LS\u003cbr\u003e\n2004 Chevrolet Silverado 1500 LT\u003cbr\u003e\n2004 Chevrolet Silverado 1500 SS\u003cbr\u003e\n2004 Chevrolet Silverado 1500 WT\u003cbr\u003e\n2004 Chevrolet Silverado 1500 Z71\u003cbr\u003e\n2004 GMC Sierra 1500 Base\u003cbr\u003e\n2004 GMC Sierra 1500 Denali\u003cbr\u003e\n2004 GMC Sierra 1500 SLE\u003cbr\u003e\n2004 GMC Sierra 1500 SLT\u003cbr\u003e\n2004 GMC Sierra 1500 WT\u003cbr\u003e\n2005 Chevrolet Silverado 1500 Base\u003cbr\u003e\n2005 Chevrolet Silverado 1500 Hybrid\u003cbr\u003e\n2005 Chevrolet Silverado 1500 LS\u003cbr\u003e\n2005 Chevrolet Silverado 1500 LT\u003cbr\u003e\n2005 Chevrolet Silverado 1500 SS\u003cbr\u003e\n2005 Chevrolet Silverado 1500 WT\u003cbr\u003e\n2005 Chevrolet Silverado 1500 Z71 Off-Road\u003cbr\u003e\n2005 GMC Sierra 1500 Base\u003cbr\u003e\n2005 GMC Sierra 1500 Denali\u003cbr\u003e\n2005 GMC Sierra 1500 Hybrid\u003cbr\u003e\n2005 GMC Sierra 1500 SLE\u003cbr\u003e\n2005 GMC Sierra 1500 SLT\u003cbr\u003e\n2005 GMC Sierra 1500 WT\u003cbr\u003e\n2006 Chevrolet Silverado 1500 Hybrid\u003cbr\u003e\n2006 Chevrolet Silverado 1500 LS\u003cbr\u003e\n2006 Chevrolet Silverado 1500 LT\u003cbr\u003e\n2006 Chevrolet Silverado 1500 SS\u003cbr\u003e\n2006 Chevrolet Silverado 1500 WT\u003cbr\u003e\n2006 GMC Sierra 1500 Denali\u003cbr\u003e\n2006 GMC Sierra 1500 Hybrid\u003cbr\u003e\n2006 GMC Sierra 1500 SL\u003cbr\u003e\n2006 GMC Sierra 1500 SLE\u003cbr\u003e\n2006 GMC Sierra 1500 SLT\u003cbr\u003e\n2006 GMC Sierra 1500 WT\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; 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