.jpeg?q=90&p=thumb&w=200&h=200)
.jpeg?q=90&p=thumb&w=40&h=40)
Brakes 
Driveline 
Electronics 
Handlebars & Controls 
Package Deals 
Wheel Accessories 
Wheels by Vehicle 
Tools and Maintenance 
Universal & Repair 
Vivid Racing Gear 
QA1 Pro-Rear System DD501-12175V
Upgrade your vehicle's rear suspension with the QA1 Pro-Rear System DD501-12175V, designed for those who demand superior performance and adjustability. 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 clicks for a seamless tuning experience.
- High-Quality Construction: Crafted from lightweight aluminum, the system includes precision machined components for durability and performance.
- Ride Height Adjustable: Easily customize your vehicle's stance with the ride height adjustment feature.
- 100% Dyno Tested: Each shock is rigorously tested and serialized, ensuring consistent quality and performance.
- Revalveable and Rebuildable: The shocks can be serviced by QA1 Factory or authorized service centers, allowing for long-term use.
Specifications
- Includes: Two double adjustable custom mount coil-over shocks and two variable rate springs (175/350).
- Spring Mounting Hardware: All necessary hardware is included for easy installation.
- Piston: Precision machined aluminum piston with PTFE piston band for reduced friction.
- Piston Rod: Solid piston rod, 5/8?? centerless ground, and hard chrome plated for durability.
- Sealing System: Features a three-step sealing system to ensure longevity and reliability.
- Fits: Designed to accommodate 3?? or 3.25?? diameter axle tubes.
- Made in the USA: Proudly manufactured to the highest standards.
Fitment
The DD501-12175V Pro-Rear System is engineered for a variety of applications, making it a versatile choice for performance enthusiasts. Whether you're hitting the drag strip or cruising the streets, this system is designed to meet your needs.
Customer Insights
Users have praised the QA1 Pro-Rear System for its smooth adjustability and significant improvement in handling. Many have noted that the installation process is straightforward, and the included hardware makes it easy to set up. The ability to fine-tune the suspension settings has been a game changer for those looking to optimize their vehicle's performance on various surfaces.
Other Part Numbers:
QA1 #qapDD501-12175V
⚠ 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 |
