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-QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 450lbs/in - Flat Large - Aluminum-Coilovers-QA1
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QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 450lbs/in - Flat Large - Aluminum

QA1
QAPGS507-10450C
806990136800
Coilovers
5 Units In Stock - Ships Next Business Day
$ 830.83 $ 749.95
$ 749.95

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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Have questions about ? Fill out the form below and we'll get back to you by the next business day.
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