Product Summary

Rear Position, 250 lbs. Spring Rate, Height Adjustable

  • Double Adjustable Shock, 250lb/in. Spring for 3.25in. Axle Tube
  • QA1's Heavy Duty Pro Rear System is designed for vehicles with a 1700-2600 lbs. rear axle weight, featuring all necessary hardware and bracketry for easy installation.
  • The system provides 9” of ride height adjustability through axle-mounted brackets and adjustable coilovers, allowing fine-tuning for desired stance.
  • Double-adjustable Proma Star shocks offer independent rebound and compression control, delivering superior handling for both street and track use.
  • Requires use of QA1 spanner wrench T114W or T115W
See more details

Key Specs

PositionRear
Spring Rate250 lbs.
Shock AdjustabilityDouble Adjustable
Shock TypeTwin Tube
Shock Body MaterialAluminum
See more specs

Need To Know

Quick and Easy Returns

Return Policy

QA1 DD501-2501 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. 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 3.25” 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

QA1 DD501-2501 Specifications

KEY SPECS
MFG. Part #DD501-2501
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 Selections324
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 Code806990169839
Adjustable ValvingYes
Adjustable Mounting Bracket IncludedYes
Lower MountBearing
Upper MountBearing
Shocks IncludedYes

Questions & Answers

Customer Impersonation Script