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Vivid Racing Gear 
QA1 RCK52373 Rear Coil-Over Conversion Kit
Upgrade your 1973-1977 GM A-Body with the QA1 RCK52373 Rear Coil-Over Conversion Kit. This comprehensive kit is designed for those who want to enhance their vehicle's suspension performance without the hassle of cutting or welding. With everything you need included, installation is straightforward and user-friendly.
Key Features
- USA-Made Components: Each kit includes specially designed mounting brackets and high-quality aluminum shocks, all proudly made in the USA.
- Adjustable Shocks: Choose between single or double adjustable shocks. The single adjustable option features 18 positions for simultaneous rebound and compression adjustment, while the double adjustable version offers 18 positions each for compression and rebound, totaling 324 possible valving combinations.
- Ride Height Adjustment: The fully threaded shock body allows you to easily adjust the ride height, helping you achieve the perfect stance and weight balance for superior handling.
- High Travel Springs: The lightweight, high travel springs are designed with fewer coils and a smaller wire diameter. This design increases travel due to the larger distance between coils, reducing unsprung weight and improving responsiveness.
- Multiple Spring Rates: Various spring rate options are available, tested for performance in both casual street driving and hardcore racing applications.
Specifications
- Vehicle Fitment: 1973-1977 GM A-Bodies
- Included Components: 2 Shocks, 2 High Travel Springs, All Mounting Brackets and Hardware
- Spring Rate: 200
- Installation: Easy bolt-in installation, no cutting or welding required
- Testing: 100% Dyno tested and serialized
- Serviceability: Rebuildable and revalveable by QA1 Factory or authorized service centers
Benefits of the RCK52373
This rear coil-over conversion kit is a game-changer for car enthusiasts looking to achieve a complete suspension overhaul. By pairing it with QA1's adjustable front coil-over kits, you can ensure balanced performance at both ends of your vehicle. The kit is designed to lower your vehicle, enhancing its aggressive stance while optimizing handling for a more enjoyable driving experience.
Customer Feedback
"The QA1 RCK52373 kit transformed my ride. The installation was a breeze, and the adjustable shocks let me dial in the perfect feel for both street and track." - A satisfied customer.
"I love how responsive my suspension feels now. The ride height adjustment is a fantastic feature that allowed me to customize my car’s look and performance." - Another happy user.
Important Considerations
When ordering springs, keep in mind that later model vehicles tend to weigh more on average. For any questions or technical assistance, don’t hesitate to reach out to QA1 tech at 952.985.5675.
Other Part Numbers:
QA1 #qapRCK52373
⚠ 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 | $1,057.00 |
| Shipping |
Weight: 25.00 Length: 18 Width: 9 Height: 8 |
| 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 | $895.76 | $1,170.93 | ? | $1,056.95 | ? | 2025-07-11 10:45:11 |
