DIY Suspension Parts

QA1's custom mount rear coil-over conversion system is available in double adjustable, single adjustable and ride sensitive valving options and a variety of spring rates. Great for any hot rod, pro-street, street rod or drag car.

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.  The system includes single, double, or MOD series coil-over shocks in a variety of spring rates suited for bigger body cars, trucks, or handling intensive applications.

Weld-on shock mount brackets are perfect for custom projects.  These kits allow the lower shock mount to be height adjustable up to 5-1/2" below the axle tube centerline and works with QA1 adjustable coilover shocks.