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SKU: GD401-10550B | UPC: 806990062536
QA1 GD401-10550B GM Pro Front Coil-Over System – Double Adj. 10in x 550lbs/in Flat Aluminum
The QA1 GM Pro front coil-over system with double adjustable valving. Lightweight billet aluminum shocks paired with high travel 550lbs/in springs deliver fully adjustable ride height, independent compression and rebound damping, superior handling, and race-proven performance the ultimate front suspension upgrade for any classic GM muscle car or street/strip build seeking precise tuning and maximum control.
Key Features
- Double Adjustable Valving – Independent compression and rebound adjustment for fine-tuning ride and handling
- Lightweight Billet Aluminum Shocks – High strength and reduced unsprung weight for improved response
- High Travel Springs – 10in length with 550lbs/in rate for increased travel and better suspension performance
- Ride Height Adjustable – Fully threaded body allows precise stance and weight balance tuning
- Flat Base – Designed for optimal fitment on GM applications
| Spec | Detail |
|---|---|
| Part Number | GD401-10550B |
| Brand | QA1 |
| Type | GM Pro Front Coil-Over System |
| Adjustability | Double Adjustable (Independent Compression and Rebound) |
| Spring Rate | 550 lbs/in |
| Spring Length | 10 in |
| Material | Billet Aluminum Shocks |
| Base | Flat |
| Country of Origin | United States |
| Warranty | QA1 Limited Lifetime |
Whats Included
- Pair of QA1 Double Adjustable Coil-Over Shocks
- High Travel 550lbs/in Springs
- Mounting hardware
- Installation instructions
Product Notes
- Designed for classic GM muscle car front suspension applications
- 100% dyno tested and serialized for quality assurance
- Serviceable and rebuildable by QA1 authorized centers
Installation Notes
- Easy bolt-in installation
- Estimated time: 4–6 hours
- Professional installation and alignment highly recommended
This Part Fits
| Year Range | Make | Model | Trim / Engine | Notes |
|---|---|---|---|---|
| Various | Chevrolet | Classic GM Muscle Cars | Front suspension | Verify application |
Why Choose QA1 GM Pro Coil-Over Systems?
- #1 choice for adjustable coil-over performance on classic GM vehicles
- Built & tested in the United States
- Chosen by muscle car builders and racers for tuning flexibility and durability
Frequently Asked Questions
-
Q: Does this fit my 1969 Chevrolet Camaro?
A: Yes, designed for classic GM front suspension; verify specific fitment details. -
Q: How do I adjust the valving?
A: Independent compression and rebound adjustments via external knobs for custom tuning. -
Q: What spring rate is best for street use?
A: 550lbs/in provides good balance; softer rates available for comfort.
Shipping & Handling
- Method: Ground UPS or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Official QA1 retail box
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