SKU: GS507-10450C | UPC: 806990136800
QA1 GM Pro Front Coil-Over System – Single Adj. – 10in x 450lbs/in – Flat Large – Aluminum 1971-1996 Impala Caprice Full-Size GM
QA1 GS507-10450C delivers a single adjustable front Pro Coil system with stock mount shocks for 1971-1996 Chevrolet Impala Caprice and full-size GM vehicles including Buick Oldsmobile Pontiac plus select 1960-1964 Ford Galaxie Mercury models. Compressed length measures 9.63 inches extended to 14.5 inches with 10-inch 450 lb/in high-travel springs. Threaded body enables ride height changes up to 2 inches for precise stance and handling balance while single adjustable valving tunes compression and rebound together.
Key Features
- Single Adjustable Valving: Simultaneous compression and rebound adjustment matches driving style from street to track with dyno-tested serialized shocks.
- Lightweight Aluminum Construction: Billet aluminum shocks reduce unsprung weight for quicker response paired with American-made high-travel springs featuring fewer coils and smaller wire diameter.
- Ride Height Adjustable: Fully threaded body provides up to 2 inches of adjustment to set perfect stance or weight distribution without components.
- Bolt-In Installation: Direct fit for factory mounts or QA1 tubular control arms simplifies setup on classic full-size chassis.
- High-Travel Springs: 450 lb/in rate optimizes performance across drag racing street rod autocross and road racing applications sold in pairs.
Product Notes
- Serviceable and rebuildable at QA1 authorized centers for long-term durability.
- 100 percent dyno tested and serialized for consistent quality control.
- Ships as complete pair ready for front installation weight approximately 28 lbs.
Installation Notes
- Professional installation recommended.
- Bolts directly to stock upper and lower control arm mounts no fabrication needed.
- Compatible with factory or QA1 upgraded tubular control arms verify spring rate for vehicle weight.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1958-1975 | Chevrolet | Bel Air | Base |
| 1958-1972 | Chevrolet | Biscayne | Base |
| 1960 | Chevrolet | Biscayne | Fleetmaster |
| 1966-1972 | Chevrolet | Caprice | Base |
| 1973-1991 | Chevrolet | Caprice | Classic |
| 1986-1991 | Chevrolet | Caprice | Base |
| 1971-1985 | Chevrolet | Impala | Base |
| 1975-1977 | Chevrolet | Impala | Custom |
| 1994-1996 | Chevrolet | Impala | SS |
| 1977-1979 | Chevrolet | Impala | Landau |
| 1960-1964 | Ford | Galaxie | Base |
| 1961 | Ford | Galaxie | Starliner |
| 1961 | Ford | Galaxie | Sunliner |
| 1960-1964 | Mercury | Monterey | Base |
Why Choose QA1?
- Over 30 years leading in performance shocks suspension and driveline components made in USA.
- 83,000 sq ft manufacturing in Lakeville MN ensures American-made quality for racing and street.
- Proven in drag racing circle track autocross road racing and street rods with rebuildable design.
Frequently Asked Questions
- Q: Will this fit my 1994-1996 Impala SS?
A: Yes GS507-10450C fits 1994-1996 Chevrolet Impala SS and other full-size GM B-body chassis from 1971-1996 with stock front mounts. - Q: What materials are used in construction?
A: Lightweight billet aluminum shocks with high-travel steel springs designed for reduced weight and faster reaction. - Q: What warranty coverage applies?
A: Limited lifetime warranty covers defects in materials and workmanship when installed and maintained properly.
Shipping & Handling
- Method: UPS Ground or FedEx standard shipping
- Availability: In stock – ships same or next business day
- Packaging: Secure pair box dimensions 20in x 12in x 12in
- Weight: 28 lbs
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