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Vivid Racing Gear 
QA1 Pro-Rear System DD501-12150
Upgrade your vehicle's rear suspension with the QA1 Pro-Rear System DD501-12150, designed for those who demand performance and precision. This system is perfect for drag racing, street performance, and street rod applications, ensuring you get the most out of your ride.
Key Features
- Adjustable Options: Choose from double adjustable, single adjustable, or ride-sensitive non-adjustable configurations to suit your driving style.
- Smooth Adjustments: Enjoy evenly spaced valving changes throughout the adjustment range, eliminating any jumps between settings.
- Coil-Over Design: This lightweight aluminum system allows for ride height adjustment, giving you control over your vehicle's stance.
- High-Quality Components: Features a precision machined aluminum piston with a PTFE piston band, ensuring durability and performance.
- Robust Construction: Solid piston rod with hard chrome plating and a three-step sealing system for long-lasting reliability.
- Fitment: Designed to fit 3" or 3.25" diameter axle tubes, making it versatile for various applications.
- USA-Made: Proudly manufactured in the USA, ensuring high standards of quality and craftsmanship.
Specifications
- Shock Type: Double Adjustable (DD)
- Spring Rate: 150 lbs
- Included Components:
- Two Proma Star or Aluma Matic Shocks
- Two Linear or Variable Rate Springs
- All necessary mounting hardware
- Testing: 100% dyno tested and serialized for quality assurance.
- Maintenance: Revalveable and rebuildable by QA1 or authorized service centers.
Benefits of the DD501-12150
This Pro-Rear System not only enhances your vehicle's handling and ride quality but also provides the flexibility to adjust settings according to your specific needs. Whether you're hitting the track or cruising the streets, this system ensures optimal performance and comfort.
Customer Feedback
Users have praised the QA1 Pro-Rear System DD501-12150 for its smooth ride and precise adjustments. Many have noted significant improvements in their vehicle's handling during both daily driving and competitive racing scenarios. The quality of construction and ease of installation have also received positive remarks, making it a favorite among enthusiasts looking to enhance their suspension setup.
Other Part Numbers:
QA1 #qapDD501-12150
⚠ 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 | $972.99 |
| Shipping |
Weight: 30.80 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 | $824.57 | $1,077.87 | ? | $972.95 | ? | 2025-07-11 10:45:06 |
