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Vivid Racing Gear 
QA1 DM501-12250 Heavy Duty Pro Rear System
Product Overview
The QA1 DM501-12250 Heavy Duty Pro Rear System is designed to bring a new level of performance and adjustability to your car or truck. This kit is perfect for vehicles with a rear axle weight ranging from 1700 to 2600 lbs. It comes complete with all the necessary hardware and bracketry for a straightforward installation, making it an ideal choice for both street and race applications.
Key Features
Robust Construction
With double shear bracketry and increased spring rates, this system offers the strength and support you need. The components are built to handle the demands of high-performance driving.
Ride Height Adjustability
Take control of your vehicle's stance with our axle-mounted brackets that provide increments of adjustment. Combined with the coilover shock, you’ll enjoy a total of 9 inches of ride height adjustability, allowing for precise tuning to suit your preferences.
MOD Series Coil-Overs
The MOD Series coilovers are designed for serious builds that require advanced tunability. These shocks feature modular valve packs, enabling you to change the valving without removing them from your vehicle. With both high-speed and low-speed bleed adjustability, they are versatile enough for daily driving and high-performance drag racing.
Easy Weld-In Installation
Installation is a breeze with the DM501-12250 kit. It includes all essential brackets, tabs, and hardware, making it a simple weld-on solution. Say goodbye to complicated setups and multiple trips to the parts store!
Warranty and Quality
QA1 stands by their products, offering a 1-Year Warranty that ensures your system will be free from defects in material and workmanship. Proudly made in Lakeville, Minnesota, you can trust the quality and craftsmanship that goes into each kit.
Specifications
- Welding required for installation
- Designed for 3.00 axle tubes
- Included tubular upper shock mount dimensions: 1-5/8" diameter x .095" wall, 40" long
- Requires use of QA1 spanner wrench T121WHD
- Includes two MOD Series adjustable coilover shocks, two springs, a 40" long weld-in tube, and all mounting hardware
Customer Reviews
"The QA1 DM501-12250 system completely changed my driving experience. The adjustability is fantastic, and I love being able to tweak the ride height so easily!"
"Installation was straightforward, and the performance on the track is unmatched. I highly recommend this kit to anyone looking to enhance their vehicle's handling."
Other Part Numbers:
QA1 #qapDM501-12250
⚠ 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: 41.00 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 10:45:15 |
