QA1 DM501-2001 HD Pro Rear Weld-In Coilover Conversion Kit MOD Series 200lb/in 3.25in Axle

The QA1 DM501-2001 HD Pro Rear Coilover Conversion System is a complete weld-in rear coilover kit built for custom street rod, street performance, and drag racing applications. Engineered for vehicles with a rear axle weight between 1,700 and 2,600 lbs., this kit provides all the hardware and bracketry needed to convert a non-leaf spring rear suspension to a fully adjustable coilover setup — without extensive fabrication.

At the heart of this system are two MOD Series adjustable coilover shocks — QA1's most tunable platform, featuring modular valve packs that allow valving changes without removing the shocks from the vehicle. This makes on-the-fly tuning for street or strip use fast and straightforward.

Key Features:

• Includes two MOD Series adjustable coilover shocks with modular valving packs for in-car revalving
• Includes two 200 lb/in. rate coilover springs
• Includes 40-inch long weld-in tubular upper shock mount tube (1-5/8 in. diameter x .095 in. wall)
• Includes all axle mount bracketry, tabs, and mounting hardware
• Designed for 3.25-inch diameter axle tubes
• Double shear bracketry for added strength and durability
• Axle-mounted brackets provide 3/4-inch increment ride height adjustments
• Combined total of 9 inches of ride height adjustability
• Suitable for street performance, street rod, and drag racing applications
• 100% dyno tested and serialized
• Revalveable and rebuildable by QA1 factory or authorized service centers
• Welding required for installation — requires QA1 spanner wrench T114W or T115W
• Made in the USA — manufactured in Lakeville, Minnesota

The QA1 HD Pro Rear System is an ideal solution for builders looking to fabricate a custom weld-in coilover rear suspension in virtually any non-leaf spring vehicle. All components are American-made and backed by QA1's best-in-class limited lifetime warranty on shocks when registered at QA1.net.