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Vivid Racing Gear 
QA1 DD501-175V1 Pro-Rear System
Transform your vehicle's rear end with the QA1 DD501-175V1 Pro-Rear System. Designed for enthusiasts who demand precision, this system offers a range of adjustable options to suit various driving styles and performance needs. Whether you're into drag racing, street performance, or classic street rods, this setup has you covered.
Key Features
- Adjustable Options: Choose from double adjustable, single adjustable, or ride-sensitive non-adjustable valving to find the perfect fit for your driving style.
- Smooth Adjustments: Enjoy evenly spaced valving changes throughout the adjustment range, eliminating any jumps between clicks for a seamless tuning experience.
- Durable Construction: Made from lightweight aluminum, these coil-over shocks are built to last while providing ride height adjustability.
- Comprehensive Kit: The package includes two Proma Star or Aluma Matic shocks, two linear or variable rate springs, and all necessary mounting hardware.
- Revalveable and Rebuildable: Keep your system in top shape with revalving and rebuilding options available through QA1 or authorized service centers.
- Made in the USA: Each shock is 100% dyno tested, serialized, and manufactured in the USA, ensuring quality and reliability.
Specifications
- Model: DD501-175V1
- Spring Rate: Variable rate of 175/350
- Adjustment Type: Double adjustable (independent compression & rebound)
- Weight: Lightweight aluminum construction
Fitment
This Pro-Rear System is ideal for various applications, including:
- Drag Racing
- Street Performance
- Street Rods
Customer Insights
Users have praised the QA1 DD501-175V1 for its exceptional adjustability and performance. Many have noted how easy it is to fine-tune the settings for different driving conditions, leading to noticeable improvements in handling and stability. The lightweight design also contributes to better overall vehicle dynamics, making it a popular choice among performance enthusiasts.
Other Part Numbers:
QA1 #qapDD501-175V1
⚠ 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 | $980.99 |
| Shipping |
Weight: 37.10 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 | $831.35 | $1,086.73 | ? | $980.95 | ? | 2025-07-11 10:45:06 |
