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Vivid Racing Gear 
QA1 GS401-10400A Pro Coil System: The Ultimate Upgrade for Your Ride
If you're in the market for a suspension upgrade that delivers both performance and adjustability, the QA1 GS401-10400A Pro Coil System is an excellent choice. This system is designed for enthusiasts who want to fine-tune their vehicle's ride height and valving control to match their unique driving style.
Key Features
- Fully Adjustable Ride Height: The fully threaded body allows for precise ride height adjustments, ensuring your vehicle has the perfect stance and weight balance for superior handling.
- Customizable Valving: Tailor the valving to suit your driving preferences, whether you’re cruising the streets or tearing up the track.
- Lightweight High Travel Springs: Designed specifically for QA1's Pro Coil Systems, these American-made springs feature fewer coils and a smaller wire diameter, resulting in increased travel and quicker reactions. This optimizes your suspension performance by reducing unsprung weight.
- Multiple Spring Rate Options: Choose from various spring rates that have been rigorously tested across different applications, from casual street driving to hardcore racing.
- Easy Installation: This kit is designed for straightforward, bolt-in installation, making it accessible for DIY enthusiasts.
- Durability: Each component is 100% dyno tested and serialized, ensuring reliability and performance. Plus, the shocks are serviceable and rebuildable at QA1 authorized service centers.
- Made in the USA: Support local manufacturing with a product that is crafted with care and precision.
Specifications
- Front / Rear: Front
- Adjustability: Single Adjustable
- Spring Rate: 400 rate/in
- Applications: Suitable for drag racing, street performance, autocross, road racing, and street rod applications.
- Sold in Pairs: Each kit includes two shocks for balanced performance.
Fitment
The QA1 GS401-10400A Pro Coil System is designed to fit a range of GM applications, making it a versatile choice for various vehicles. Whether you’re upgrading a street rod or a performance machine, this coil-over system can enhance your driving experience.
Customer Insights
Users have praised the QA1 GS401-10400A for its remarkable adjustability and ease of installation. Many have noted significant improvements in handling and ride quality, making it a popular choice among both casual drivers and serious racers. The lightweight design and responsive springs have also garnered positive feedback, highlighting how quickly the suspension reacts to changes in the road.
Conclusion
Elevate your vehicle's performance with the QA1 GS401-10400A Pro Coil System. With its adjustable features, high-quality construction, and suitability for various driving styles, this coil-over system is a smart investment for anyone looking to enhance their ride.
Other Part Numbers:
QA1 #qapGS401-10400A
⚠ 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 | $713.98 |
| Shipping |
Weight: 19.70 Length: 22 Width: 11 Height: 9 |
| Product Added At | Sunday 09 August, 2020 |
| 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 | $605.07 | $790.94 | ? | $713.95 | ? | 2025-07-11 10:44:41 |
