SKU: GS507-09650D | UPC: 806990139955
QA1 GM Pro Front Coil-Over System – Single Adj. – 9in x 650lbs/in – Pigtail Large – Aluminum for 1958-1970 Impala Full Size GM
This QA1 front coil-over system delivers precise ride height and valving adjustments for 1958-1970 Impala and full-size GM vehicles including Chevrolet Bel Air Biscayne Caprice Buick LeSabre Electra Oldsmobile 98 Pontiac Bonneville Catalina. Single adjustable compression valving pairs with a 650 lb/in 9-inch high-travel spring and large pigtail end to match street drag autocross or road race demands. The fully threaded aluminum body enables easy stance tuning and weight balance for enhanced handling response.
Key Features
- Single Adjustable Compression Valving: Fine-tune damping for your driving style from street cruising to track use with proven dyno-tested performance.
- Lightweight Billet Aluminum Shocks: Reduce unsprung weight for quicker suspension reaction and better overall vehicle dynamics.
- High Travel 9in 650lb/in Springs: American-made with fewer coils smaller wire diameter and large pigtail for increased travel and faster response in varied applications.
- Fully Threaded Body: Adjust ride height without disassembly to set perfect stance or optimize corner weights for drag or road course.
- Bolt-In Design: Direct fit installation serialized 100% dyno tested serviceable rebuildable at QA1 centers and made in USA sold in pairs.
Product Notes
- Pair requires matching rear suspension for balanced performance.
- Dyno serialized for quality assurance rebuildable at QA1 authorized centers.
- Heavy item ships in reinforced box to prevent damage.
Installation Notes
- Professional installation recommended.
- Bolt-in using factory lower control arm mounts and QA1 upper mount kit included.
- Compatible with stock or aftermarket sway bars verify spring rate for vehicle weight.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1958-1970 | Chevrolet | Impala | |
| 1958-1970 | Chevrolet | Bel Air | |
| 1958-1970 | Chevrolet | Biscayne | |
| 1966-1970 | Chevrolet | Caprice | |
| 1958-1970 | Buick | Electra | LeSabre Wildcat |
| 1959-1970 | Oldsmobile | 98 | Starfire |
| 1959-1970 | Pontiac | Bonneville | Catalina |
Why Choose QA1?
- Track record in drag racing street rods autocross and road racing applications.
- Every shock dyno tested serialized for consistent performance.
- Engineered in USA with rebuild service network for long-term reliability.
Frequently Asked Questions
- Q: Will this fit my 1964 Impala SS?
A: Yes fits all 1958-1970 Chevrolet Impala models including SS with bolt-in installation using included hardware. - Q: What materials are used in construction?
A: Billet aluminum shock bodies high-travel steel springs with pigtail ends and threaded components for durability and light weight. - Q: What is the warranty and service policy?
A: QA1 provides limited warranty on valving and components fully serviceable rebuildable at authorized centers worldwide.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Protective cardboard box 26 x 16 x 16 inches
- Weight: 20.1 lbs
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