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Vivid Racing Gear 
QA1 Mustang II Pro Coil Shock Systems - MS303-08375
Looking for a way to enhance your ride quality on both the street and the strip? The QA1 Mustang II Pro Coil Shock Systems are designed to meet your needs with precision and performance. Whether you're into drag racing, street performance, or autocross, this system delivers the kind of handling and stance that will make your vehicle stand out.
Key Features
- Adjustable Valving Options: Choose from double adjustable, single adjustable, drag "R" series adjustable, and non-adjustable options to find the perfect fit for your driving style.
- Spring Rate Choices: With four spring rate options, you can customize your setup for optimal performance.
- Lower Ride Height: Achieve the "in the weeds" stance you've always wanted, thanks to a fully threaded body that allows for precise ride height adjustments.
- Lightweight Aluminum Construction: Designed for durability without weighing you down, ensuring a responsive driving experience.
- 100% Dyno Tested and Serialized: Each system undergoes rigorous testing to guarantee performance and reliability.
- Rebuildable and Revalveable: Service options are available through QA1 Factory or authorized service centers, extending the life of your shocks.
Specifications
- Part Number: MS303-08375
- Includes: (2) QA1 high-performance shocks, (2) chrome-plated specially designed springs, and all necessary mounting hardware.
- Spring Size: 8" springs with a rating of 375.
- Installation: Easy, bolt-in installation makes upgrading your suspension a breeze.
- Sold in Pairs: Ensures you have everything you need for both sides of your vehicle.
Fitment
This system is compatible with a variety of applications, including drag racing, street performance, autocross, road racing, and street rod setups. The adjustable ride height and valving options make it a versatile choice for any performance enthusiast.
Customer Feedback
Many users have praised the QA1 Mustang II Pro Coil Shock Systems for their exceptional handling and ride quality. One customer noted that the adjustments allowed them to fine-tune their vehicle's balance, resulting in a noticeable improvement during cornering. Another reviewer highlighted the ease of installation, making it accessible even for those new to suspension upgrades. The lightweight design was also appreciated, as it contributed to a more responsive driving experience.
Other Part Numbers:
QA1 #qapMS303-08375
⚠ 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: 16.10 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 |
