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Vivid Racing Gear 
QA1 GD401-10550B Pro Coil System
Key Features
- Fully adjustable ride height and valving control
- Multiple spring rate options tailored for various driving styles
- Lightweight Billet Aluminum Coil-Over Shocks for optimal performance
- High travel springs designed for increased suspension travel
- Easy, bolt-in installation for hassle-free setup
- 100% Dyno tested and serialized for quality assurance
- Serviceable and rebuildable by QA1 authorized service centers
- Made in the USA, ensuring top-notch craftsmanship
Benefits of the GD401-10550B
This Pro Coil System is perfect for those who want to fine-tune their vehicle's handling characteristics. Whether you’re hitting the streets or the racetrack, the adjustable ride height allows you to achieve the perfect stance while optimizing weight balance for superior handling. The lightweight design reduces unsprung weight, leading to quicker reactions and enhanced suspension performance.
Specifications
- Front Pro Coil double adjustable stock mount shock kit
- Compressed length: 10.13 inches
- Extended length: 14 inches
- Includes a 10-inch spring with a rating of 550
- Spring design features a tapered flat end
Fitment and Applications
The GD401-10550B Pro Coil System is versatile and suitable for various applications, including:
- Drag racing
- Street performance
- Autocross
- Road racing
- Street rod applications
What Customers Are Saying
Users appreciate the noticeable difference in handling and ride quality after installation. Many have highlighted the ease of installation and the ability to customize the ride height to suit their preferences. The responsive nature of the shocks has received praise, especially during spirited driving and competitive events.
Other Part Numbers:
QA1 #qapGD401-10550B
⚠ 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 | $917.99 |
| Shipping |
Weight: 23.80 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 | $777.96 | $1,016.94 | ? | $917.95 | ? | 2025-07-11 10:45:06 |
