QA1 Hd Pro Rear Coilover Conversion System, 3.0" Axle, Double, 250Lb - DD501-12250
Product Overview
QA1's Heavy Duty Pro Rear Systems are the perfect solution to add coilovers to your car or truck. Designed for any vehicle with a 1700-2600 lbs. rear axle weight, this kit includes all the necessary hardware and bracketry for a seamless installation. With double shear bracketry and increased spring rates, it ensures the strength and support you need for street and race applications. This simple weld-on kit features axle mount bracketry, upper shock mounts and tubing, and fully adjustable QA1 coilover shocks and springs.
Ride Height Adjustability
Our axle-mounted brackets offer ¾” increments of adjustment, and the coilover shock allows for fine-tuning. Combined, you will have a total of 9” of ride height adjustability, giving you full control for your desired stance.
Double-Adjustable Coil-Overs
For performance enthusiasts who demand precision handling and control, our double-adjustable Proma Star shocks are the perfect choice. Perfect for both street and track use, double adjustable shocks are famous for their independent rebound and compression tunability, giving you exceptional handling and control for finer control over your suspension.
Easy, Weld-In Installation
Each kit comes complete with the essential brackets, tabs, and hardware, making it a simple weld-on solution to get the job done efficiently without excess fabrication or trips to the parts store.
Best In-Class Lifetime Warranty
Register at QA1.net/warranty for lifetime coverage of your QA1 shocks.
Made in the USA
QA1’s Heavy Duty Pro-Rear Systems is proudly made in Lakeville, Minnesota.
Fitment Notes
Welding required
Designed for 3.00” axle tubes
Included tubular upper shock mount dimensions are 1-5/8” diameter x .095 wall, 40” long
Requires use of QA1 spanner wrench T114W or T115W
HD Pro Rear System includes two double adjustable coilover shocks, two springs, 40" long weld-in tube, and all mounting hardware.
QA1 specializes in providing performance shocks, suspension components, carbon fiber driveshafts, rod ends, ball joints and more to a variety of automotive markets, including circle track racing, drag racing, street performance, and street rodding. With over 83,000 square feet of manufacturing space in Lakeville, MN, QA1 is proud to offer an extensive line of American-made suspension and driveline. Founded in 1993 by Jim Jordan, QA1 introduced rod ends and spherical bearings specifically for the performance racing industry, quickly becoming the #1 name in rod ends, spherical bearings, custom linkages and similar products to the motorsports industry. Always on the cutting edge of technology, QA1 recently introduced in-house filament winding of carbon fiber and similar materials to provide driveshafts and other products. With continued focus on fine-tuning and expanding its offering of American-made high performance suspension components and carbon fiber driveshafts, QA1 has grown to be a household name in the performance aftermarket.
