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Vivid Racing Gear 
QA1 GD401-10400B Pro Coil System
If you're seeking a suspension upgrade that combines performance and adjustability, the QA1 GD401-10400B Pro Coil System is an excellent choice. Designed for those who demand precision in their ride, this system offers fully adjustable ride height and valving control to match your driving style perfectly.
Key Features
- Adjustable Valving: Choose from independent compression and rebound double adjustable, simultaneous compression and rebound adjustable, or drag "R" Series adjustable options.
- Lightweight Design: Crafted from billet aluminum, these coil-over shocks are not only durable but also lightweight, contributing to enhanced performance.
- High Travel Springs: The American-made springs feature fewer coils and a smaller wire diameter, allowing for increased travel and faster reaction times, leading to optimized suspension performance.
- Easy Installation: Enjoy a hassle-free bolt-in installation process, making it simple to upgrade your vehicle.
- Ride Height Adjustment: Fine-tune your vehicle's stance and weight balance for superior handling.
- 100% Dyno Tested: Each unit is serialized and tested to ensure top-notch quality and performance.
- Serviceable and Rebuildable: Support from QA1 authorized service centers ensures longevity and reliability.
- Versatile Applications: Perfect for drag racing, street performance, autocross, road racing, and street rods.
- Sold in Pairs: Each purchase includes a pair of shocks for balanced performance.
Specifications
The GD401-10400B Pro Coil System features front double adjustable stock mount shocks with the following dimensions:
- Compressed Length: 10.13 inches
- Extended Length: 14 inches
- Spring Rating: 400 with a tapered flat end
- Spring Length: 10 inches
Why Choose the GD401-10400B?
This Pro Coil System is designed for those who want to take their driving experience to the next level. Whether you’re cruising the streets or hitting the track, the GD401-10400B provides the adaptability and performance you need. The lightweight construction reduces unsprung weight, allowing for quicker responses and improved handling.
Customer Feedback
Users have praised the GD401-10400B for its remarkable adjustability and ease of installation. Many appreciate how quickly they could dial in their suspension settings to suit their specific driving conditions. The lightweight design has also garnered positive remarks, with drivers noting improved handling and responsiveness in various driving scenarios.
Other Part Numbers:
QA1 #qapGD401-10400B
⚠ 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: 19.50 Length: 22 Width: 11 Height: 9 |
| 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 |
