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Vivid Racing Gear 
QA1 GD501-10550A Pro Coil System
Looking to upgrade your ride's suspension? The QA1 GD501-10550A Pro Coil System is designed to provide you with fully adjustable ride height and valving control, making it an excellent choice for both casual drivers and serious racers alike.
Key Features
- Adjustable Valving: Choose between independent compression and rebound double adjustable, simultaneous compression and rebound adjustable, or drag "R" Series adjustable options to match your driving style.
- Lightweight Billet Aluminum Construction: These coil-over shocks are built with high-quality materials that reduce unsprung weight, allowing for quicker reactions and improved suspension performance.
- High Travel Springs: The American-made springs feature fewer coils and a smaller wire diameter, resulting in increased travel due to the larger distance between the coils. This design enhances responsiveness and handling.
- Easy Installation: The GD501-10550A is designed for a straightforward, bolt-in installation, making it accessible for DIY enthusiasts and professionals alike.
- Ride Height Adjustable: Fine-tune your vehicle’s stance and weight balance for optimum performance on the road or track.
- 100% Dyno Tested: Each unit is serialized and tested to ensure top-notch quality and reliability.
- Serviceable and Rebuildable: Maintenance is a breeze with access to QA1 Authorized Service Centers for servicing and rebuilding.
- Versatile Applications: Perfect for drag racing, street performance, autocross, road racing, and street rod applications.
- Sold in Pairs: Get the complete setup you need for your vehicle.
Specifications
- Front Pro Coil Double Adjustable Stock Mount Shock Kit
- Compressed Length: 10.13 inches
- Extended Length: 17 inches
- Includes 10-inch spring with a rating of 550
- Spring Type: Tapered pigtail end for improved fit and performance
Fitment
The QA1 GD501-10550A Pro Coil System is designed to fit a variety of GM models, making it a versatile addition to your vehicle's suspension setup. Whether you're hitting the streets or the track, this system provides the performance enhancements you need.
Customer Insights
Users have praised the GD501-10550A for its easy installation and noticeable improvement in handling. Many have noted that the adjustable features allow them to tailor the suspension to their specific driving conditions, whether it’s for daily use or competitive racing. The quality of the materials and construction has also received high marks, with several reviews highlighting the system's durability and performance consistency.
Other Part Numbers:
QA1 #qapGD501-10550A
⚠ 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: 24.40 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 10:45:07 |
