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Vivid Racing Gear 
QA1 Mustang II Pro Coil Shock Systems
Experience exceptional ride quality whether you're cruising the streets or hitting the strip with the QA1 Mustang II Pro Coil Shock Systems. These systems are engineered to provide an impressive performance boost while maintaining a comfortable ride.
Key Features
- Adjustable Options: Choose from double adjustable, single adjustable, drag "R" series adjustable, or non-adjustable valving options to suit your driving style.
- Spring Rate Variety: Four spring rate options ensure you find the perfect fit for your vehicle's needs.
- Customizable Ride Height: The fully threaded body allows for precise ride height adjustments, enabling you to achieve that desired "in the weeds" stance.
- Lightweight Aluminum Construction: Designed for performance without the extra weight, enhancing your vehicle's handling capabilities.
- 100% Dyno Tested: Each component is rigorously tested and serialized for quality assurance.
- Rebuildable and Revalveable: Keep your system in top shape with rebuild and revalve options available through QA1 or authorized service centers.
- Easy Installation: The bolt-in design makes for a straightforward installation process.
Specifications
- Part Number: MS301-08500
- Shock Type: Front Pro Coil single adjustable Mustang II mount shock
- Spring Length: 8 inches
- Spring Rate: 500 lbs
- Sold In: Pairs
Fitment
This system is ideal for a variety of applications including drag racing, street performance, autocross, road racing, and street rod setups. Whether you're on the track or the street, this coil-over conversion system is designed to meet your performance needs.
Customer Feedback
Users have praised the QA1 Mustang II Pro Coil Shock Systems for their remarkable handling and stability. Many noted the ease of installation and the noticeable improvement in ride quality compared to stock setups. The ability to adjust ride height and valving has also been highlighted as a major advantage, allowing drivers to fine-tune their vehicles for specific driving conditions.
Other Part Numbers:
QA1 #qapMS301-08500
⚠ 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 | $703.98 |
| Shipping |
Weight: 18.10 Length: 25 Width: 10 Height: 6 |
| 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 | $596.59 | $779.86 | ? | $703.95 | ? | 2025-07-11 10:45:10 |
