Product Summary

250 lbs. Spring Rate, Shocks Included, Welding Required

  • QA1's Pro Rear Systems are designed for vehicles with a 1700-2600 lbs. rear axle weight, providing enhanced strength and support for both street and race applications.
  • The system offers ¾” increments of adjustment via axle-mounted brackets and fine-tuning through the coilover shocks, allowing for full control over the vehicle's stance.
  • Feature modular valve packs for easy tunability and adjustability, ideal for street use and high-performance drag racing.
  • The kit includes all necessary hardware and bracketry, making it a simple weld-in solution, proudly made in the USA.
  • 250lb/in. Spring for 3.25in. Axle Tube
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Key Specs

MFG. Part #DM501-2501
Spring Rate250 lbs.
Shocks IncludedYes
Shock AdjustabilityDouble Adjustable
Hardware IncludedYes
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QA1 DM501-2501 Details

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. MOD Series Coil-Overs Designed for top builds wanting more tunability and aggressive force curves, these shocks feature modular valve packs, allowing valving changes without removing them from the car. With high-speed and low-speed bleed adjustability, these shocks are both streetable and able to get high-horsepower cars down the drag strip. 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. Made in the USA QA1’s Heavy Duty Pro-Rear Systems is proudly made in Lakeville, Minnesota. Fitment Notes Welding required Designed for 3.25” axle tubes Included tubular upper shock mount dimensions are 1-5/8” diameter x .095 wall, 40” long Requires use of QA1 spanner wrench T121W.

QA1 DM501-2501 Specifications

KEY SPECS
MFG. Part #DM501-2501
BrandQA1
Spring Rate250 lbs.
Shocks IncludedYes
Shock AdjustabilityDouble Adjustable
Hardware IncludedYes
Welding RequiredYes
Crossmember IncludedNo
GENERAL
Sold in QuantityKit
GTIN Code806990169952
NotesDesigned for 3.25 axle tubes. Included tubular upper shock mount dimensions are 1-5/8 diameter x .095 wall, 40 long. Requires use of QA1 spanner wrench T121W.
Shock Body MaterialAluminum
Compressed Length11.5"
Extended Length16.88"
FinishPowder Coated
Adjustable Mounting Bracket IncludedYes
Adjustable ValvingYes
Gas ChargedNo
Lower MountBearing
Number of Valving Selections576
Upper MountBearing
Spring FinishGray/Silver
Coilover Springs IncludedYes

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