Product Summary

Rear Position, 250 lbs. Spring Rate, Height Adjustable

  • Designed for vehicles with a rear axle weight of 1700-2600 lbs., offering robust support for both street and race applications.
  • Provides 9” of height adjustment in ¾” increments, allowing precise stance control.
  • QA1 Proma Star shocks offer easy tuning for ride comfort and performance, ideal for both daily driving and spirited handling.
  • The kit includes all necessary brackets, hardware, and mounts for straightforward welding installation.
  • Single Adjustable Shock, 250lb/in. Spring for 3.25in. Axle Tube
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Key Specs

PositionRear
Spring Rate250 lbs.
Shock AdjustabilityDouble Adjustable
Shock TypeTwin Tube
Shock Body MaterialAluminum
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QA1 DS501-2501 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. Single-Adjustable Coil-Overs QA1 single adjustable Proma Star shocks deliver exceptional ride quality and performance. With the simple turn of a dial, you can effortlessly switch between a comfortable cruise and a more aggressive feel, making them ideal for daily driving or twisty backroads. 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 T114W or T115W.

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QA1 DS501-2501 Specifications

KEY SPECS
MFG. Part #DS501-2501
BrandQA1
PositionRear
Spring Rate250 lbs.
Shock AdjustabilityDouble Adjustable
Shock TypeTwin Tube
Shock Body MaterialAluminum
Upper Shock MountEyelet
Lower Shock MountEyelet
Height AdjustableYes
FinishPolished
GENERAL
Compressed Length11.63"
Extended Length16.88"
Number of Valving Selections18
Coilover Springs IncludedYes
Sold in QuantityKit
Hardware IncludedYes
Crossmember IncludedNo
Welding RequiredYes
Gas ChargedNo
Spring FinishPowder Coated
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 T114W or T115W.
GTIN Code806990170019
Adjustable ValvingYes
Adjustable Mounting Bracket IncludedYes
Lower MountBearing
Upper MountBearing
Shocks IncludedYes

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