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Vivid Racing Gear 
QA1 Pro-Rear System DM501-1301
Revitalize your vehicle's rear suspension with the QA1 Pro-Rear System DM501-1301. This performance-enhancing kit is designed to deliver exceptional handling and responsiveness, making it a perfect fit for drag racing, street performance, and street rod applications.
Key Features
- Adjustable Options: Choose from various configurations including Double Adjustable (DD), Single Adjustable (DS), and Ride Sensitive Non-Adjustable (ALN) to suit your specific driving style.
- Smooth Adjustments: Enjoy evenly spaced valving changes throughout the adjustment range, ensuring seamless transitions without any jumps between clicks.
- Coil-Over Design: Lightweight aluminum construction allows for easy ride height adjustments, providing flexibility for any driving scenario.
- Precision Engineering: Features a precision machined aluminum piston with a PTFE piston band, ensuring durability and performance consistency.
- Robust Sealing System: Equipped with a three-step sealing system to enhance longevity and reliability.
- Fitment Options: Available to fit 3" or 3.25" diameter axle tubes, making it versatile for a range of vehicles.
Specifications
- Shock Type: Includes two MOD series custom mount coil-over shocks
- Spring Rate: Comes with two springs rated at 130
- Included Components: Kit includes two Proma Star or Aluma Matic shocks, two linear or variable rate springs, and all necessary mounting hardware.
- Testing: 100% dyno tested and serialized for quality assurance.
- Serviceability: Revalveable and rebuildable at the QA1 factory or authorized service centers.
- Made in the USA: Proudly manufactured in the United States, ensuring top-notch quality and craftsmanship.
Customer Insights
Users appreciate the DM501-1301 for its impressive performance on the track as well as the street. Many have noted the ease of adjustment, allowing for quick tuning to match different driving conditions. The lightweight aluminum construction not only enhances handling but also contributes to a noticeable reduction in overall vehicle weight. Overall, this system is highly regarded for its reliability and performance, making it a go-to choice for enthusiasts looking to upgrade their ride.
Other Part Numbers:
QA1 #qapDM501-1301
⚠ 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 | $2,080.03 |
| Shipping |
Weight: 29.80 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 | $1,762.74 | $2,304.24 | ? | $2,079.95 | ? | 2025-07-11 10:45:12 |
