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Vivid Racing Gear 
QA1 Heavy Duty Pro Rear System - DD501-3001
Looking to upgrade your vehicle's suspension? The QA1 Heavy Duty Pro Rear System (DD501-3001) is designed specifically for cars and trucks with a rear axle weight between 1700 to 2600 lbs. This comprehensive kit comes with everything you need for a smooth installation, including all necessary hardware and bracketry.
Key Features
- Robust Construction: Features double shear bracketry and increased spring rates, providing the strength and support needed for both street and race applications.
- Complete Weld-On Kit: This package includes axle mount bracketry, upper shock mounts, tubing, and fully adjustable QA1 coilover shocks and springs.
Ride Height Adjustability
With our axle-mounted brackets, you can adjust the ride height in increments, allowing for a total of 9 inches of ride height adjustability. This means you can easily customize your vehicle's stance to match your style and performance needs.
Double-Adjustable Coil-Overs
For those who crave precision handling, the double-adjustable Proma Star shocks are a game changer. These shocks offer independent rebound and compression tunability, ensuring exceptional handling and control whether you're on the street or the track.
Easy Installation
Installation is straightforward with the included brackets, tabs, and hardware. This weld-on solution minimizes the need for excessive fabrication or trips to the parts store, making it a hassle-free upgrade for your vehicle.
Best In-Class Lifetime Warranty
When you invest in QA1 products, you're covered for life! Register at QA1.net/warranty to enjoy lifetime coverage on your QA1 shocks.
Made in the USA
Each Heavy Duty Pro Rear System is proudly manufactured in Lakeville, Minnesota, ensuring top-notch quality and craftsmanship.
Fitment Notes
- Welding required for installation.
- Designed for 3.25-inch axle tubes.
- Included tubular upper shock mount dimensions: 1-5/8 inch diameter x .095 wall, 40 inches long.
- Requires QA1 spanner wrench T114W or T115WHD for adjustments.
What's Included
The Pro Rear System package includes:
- Two double adjustable coilover shocks
- Two springs
- 40-inch long weld-in tube
- All necessary mounting hardware
Customer Reviews
"Installation was a breeze! The adjustability is fantastic, and I can feel the difference in handling on both the street and the track. Highly recommend!"
"Quality is top-notch. The weld-on design made it easy to fit, and the ride height adjustability allowed me to get my truck just where I wanted it. Couldn't be happier!"
Other Part Numbers:
QA1 #qapDD501-3001
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
QA1 is a company that was founded in 1993. They specialize in manufacturing high-quality suspension parts, shock absorbers, composite driveshafts, bearings, steering components, and other related accessories. Their products are used in different industries such as the industrial, motorsports, and automotive sectors. Today, they are the leading manufacturer of OE parts in the market.
Suspension ExpertsThe company is best known for its motion control sub-assemblies and wide range of suspension systems. They are always searching for new ways to develop each component to enhance their products further.
State-of-the-Art FacilityThe company is housed in one of the most sophisticated facilities in the market to accommodate the increasing demands of its customers. With 100,000 square feet at their disposal, their facility contains high-tech equipment such as a CNC machine, laser cutting equipment, hydraulic presses, and filament windings. It allows them to manufacture the best product in the market.
QA1 is also one of the few companies that are ISO certified. It guarantees that their parts are manufactured consistently, following the standards put in place by the company and the regulators.
Purchase QA1 Products At Vivid RacingIf you are in the market for quality suspension parts for your vehicle, then QA1 is the brand for you. They have been manufacturing components for the last 28 years and have consistently given their customers parts that meet their demand. To know more about QA1, visit Vivid Racing and check out their list of parts that meet your demand.
| Sale price | None |
| Wholesale price | $968.98 |
| Shipping |
Weight: 36.80 Length: 40 Width: 8 Height: 8 |
| Product Added At | Monday 23 December, 2024 |
| Product Modified At | Friday 11 July, 2025 |
| Imported By | ETLOverride |
| Last Edited By | Turn_API |
| View In Admin |
| Carb Approved | - |
|---|---|
| Carb Number | - |
| Epa Status | N/A |
| Prop65 | Yes |
| Carb Required | - |
| Vendor | Inv | Cost | Retail | Jobber | MAP | Core | Updated | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Turn 14 | $821.17 | $1,073.43 | ? | $968.95 | ? | 2025-07-11 10:45:16 |
