SKU: GS507-09450D | UPC: 806990139931
QA1 GM Pro Front Coil-Over System – Single Adj. – 9in x 450lbs/in – Pigtail Large – Aluminum for 1958-1970 Impalas & Full Size GM Vehicles
Upgrade your ride with the QA1 GM Pro Front Coil-Over System designed for 1958-1970 Impalas and full-size Chevrolet Buick Oldsmobile Pontiac models. This single adjustable kit delivers precise valving control and ride height tuning via fully threaded aluminum bodies for custom handling and stance. High travel 450 lb/in springs reduce unsprung weight and boost suspension response from street to track.
Key Features
- Single Adjustable Valving: Compression adjustment tailors damping to your driving style whether street cruising or drag racing.
- Ride Height Adjustable: Fully threaded shock bodies enable exact height settings to dial in stance and weight distribution for better cornering.
- Lightweight Billet Aluminum Shocks: Lowers unsprung mass for faster suspension reaction and improved overall performance.
- High Travel Springs: American-made 450 lb/in pigtail large springs with fewer coils smaller wire diameter offer extended travel and quick response tested across applications.
- Bolt-In Design: Direct fit installation simplifies upgrade no fabrication needed dyno tested serialized and rebuildable.
Product Notes
- Sold in pairs for complete front suspension setup.
- Serviceable and rebuildable at QA1 authorized centers.
- Made in USA suitable for drag street autocross road racing street rods.
Installation Notes
- Professional installation recommended.
- Bolt-in using factory mount locations no cutting or welding required.
- Compatible with stock control arms verify spring rate matches vehicle weight.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1958-1970 | Chevrolet | Impala | |
| 1958-1970 | Chevrolet | Bel Air | |
| 1958-1970 | Chevrolet | Biscayne | |
| 1964-1970 | Chevrolet | Caprice | |
| 1958-1970 | Buick | LeSabre | |
| 1958-1970 | Oldsmobile | Delta 88 | |
| 1958-1970 | Pontiac | Bonneville | |
| 1963-1974 | Chevrolet | Corvette | Base |
| 1975-1976 | Chevrolet | Corvette | Stingray |
| 1977-1982 | Chevrolet | Corvette | Base |
| 1978 | Chevrolet | Corvette | Indianapolis 500 Pace Car |
| 1978 | Chevrolet | Corvette | Silver Anniversary Edition |
| 1982 | Chevrolet | Corvette | Collector’s Edition |
Why Choose QA1?
- Proven performance in drag racing autocross road racing and street applications.
- 100% dyno tested serialized for consistent quality.
- Engineered in USA with rebuildable design for long-term reliability.
Frequently Asked Questions
- Q: Will this fit my 1965 Impala or 1967 Corvette?
A: Yes fits 1958-1970 full-size GM vehicles like Impala Bel Air Caprice and select 1963-1982 Corvettes including Base Stingray special editions. - Q: What materials are used in construction?
A: Billet aluminum shock bodies lightweight high travel steel springs pigtail large ends. - Q: What warranty coverage is provided?
A: QA1 limited lifetime warranty on valving 2-year warranty on shock body when maintained per guidelines contact QA1 for details.
Shipping & Handling
- Method: Ground shipping via UPS or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Original box dimensions 28 x 11 x 8 inches
- Weight: 23 lbs
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