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Vivid Racing Gear 
QA1 Heavy Duty Pro Rear System - DM501-12300
Upgrade your ride with the QA1 Heavy Duty Pro Rear System, specifically designed for vehicles with a rear axle weight between 1700 to 2600 lbs. This comprehensive kit provides everything you need for a smooth installation, making it an ideal choice for both street and racing applications.
Key Features
- Complete Installation Kit: Comes with all necessary hardware, bracketry, and a simple weld-on design for an efficient setup.
- Robust Construction: Features double shear bracketry and enhanced spring rates for superior strength and support.
- Ride Height Adjustability: Offers 9 increments of ride height adjustment through axle-mounted brackets and fine-tuning coilover shocks, allowing you to achieve your desired stance effortlessly.
- MOD Series Coil-Overs: Engineered for high-performance builds, these shocks include modular valve packs that enable quick valving changes without removal. Enjoy both high-speed and low-speed bleed adjustability for versatile performance.
- Easy Installation: The kit includes all essential components, such as brackets, tabs, and hardware, minimizing the need for additional fabrication or parts runs.
- 1-Year Warranty: QA1 stands behind their products, offering a one-year warranty against defects in material and workmanship.
- Made in the USA: Proudly manufactured in Lakeville, Minnesota, ensuring top-quality craftsmanship.
Specifications
- Welding Required: Yes
- Designed For: 3.00 axle tubes
- Tubular Upper Shock Mount Dimensions: 1-5/8 diameter x .095 wall, 40 inches long
- Included Components: Two MOD Series adjustable coilover shocks, two springs, 40-inch long weld-in tube, and all mounting hardware.
Fitment Notes
This system is designed for a seamless fitment on a variety of vehicles with compatible axle weights and dimensions. Ensure your vehicle meets the specifications for optimal performance.
Customer Feedback
Users have praised the DM501-12300 for its impressive adjustability and ease of installation. Many have noted significant improvements in handling and ride quality, making it a popular choice among car enthusiasts looking for a reliable coilover solution.
Other Part Numbers:
QA1 #qapDM501-12300
⚠ 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 | $2,016.04 |
| Shipping |
Weight: 41.50 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 | $1,708.51 | $2,233.35 | ? | $2,015.95 | ? | 2025-07-11 10:45:16 |
