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-QA1 GM Pro Front Coil-Over System - Single Adj. - 9in x 550lbs/in - Pigtail Large - Aluminum-Coilovers-QA1
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QA1 GM Pro Front Coil-Over System - Single Adj. - 9in x 550lbs/in - Pigtail Large - Aluminum

QA1
QAPGS507-09550D
806990139948
Coilovers
Out of stock
$ 830.83 $ 749.95

SKU: GS507-09550D | UPC: 806990139948

QA1 GM Pro Front Coil-Over System Single Adj 9in x 550lbs/in Pigtail Large Aluminum 1958-1970 Impala Full-Size

Upgrade your ride with the QA1 GS507-09550D Pro Coil front coil-over kit designed for 1958-1970 Chevrolet Impala, Caprice, Bel Air, Biscayne and other full-size GM vehicles from Buick, Oldsmobile and Pontiac. This single adjustable system features a 9.63-inch compressed length, 14.5-inch extended length, and 9-inch 550 lbs/in high-travel springs for precise handling and ride height tuning. Fully threaded aluminum body allows ride height changes up to 2 inches for custom stance and balanced weight distribution.

Key Features

  • Single Adjustable Damping: 24-position compression adjustment tunes rebound and compression valving together for matched ride quality and track performance.
  • High-Travel Springs: American-made lightweight springs with fewer coils and smaller wire diameter deliver faster response, reduced unsprung weight and increased suspension travel.
  • Ride Height Adjustable: Fully threaded body provides up to 2 inches of adjustment to set perfect stance or optimize weight balance without bumper stops.
  • Bolt-In Design: Direct fit for stock mounts or QA1 tubular control arms with easy installation on 1958-1970 full-size GM chassis.
  • Dyno Tested & Serialized: Each shock 100% dyno tested at QA1 with serial number for rebuild service at authorized centers.

Product Notes

  • Kit sold as a pair for front installation only.
  • Serviceable and rebuildable for long-term durability.
  • Weight 25.8 lbs per pair, ships in protective packaging.

Installation Notes

  • Professional installation recommended.
  • Requires stock upper and lower control arm mounts or QA1 tubular arms.
  • Compatible with factory sway bar and springs. remove OEM coil springs during install.

This Part Fits

Year Make Model Submodel
1958-1970 Chevrolet Impala All
1959-1970 Chevrolet Caprice All
1958-1970 Chevrolet Bel Air All
1958-1970 Chevrolet Biscayne All
1959-1970 Buick Electra All
1959-1970 Buick LeSabre All
1959-1970 Buick Wildcat All
1959-1970 Oldsmobile Ninety-Eight All
1959-1970 Oldsmobile Eighty-Eight All
1959-1970 Pontiac Bonneville All
1959-1970 Pontiac Catalina All

Why Choose QA1?

  • Over 30 years leading in performance shocks and suspension for racing and street.
  • All products manufactured in USA with 83,000 sq ft facility in Lakeville, MN.
  • Proven in drag racing, autocross, road racing and street rods with rebuildable design.

Frequently Asked Questions

  • Q: Will this fit my 1965 Impala SS?
    A: Yes, direct bolt-in for all 1958-1970 Impala models including SS using stock control arm mounts.
  • Q: What material is the body made from?
    A: Lightweight billet aluminum shock body with steel internals for strength and heat dissipation.
  • Q: What warranty coverage?
    A: Limited lifetime warranty on shocks covers manufacturing defects when installed and used properly.

Shipping & Handling

  • Method: UPS Ground or FedEx
  • Availability: In stock - ships same or next business day
  • Packaging: Securely boxed pair, dimensions 20 x 10 x 10 inches
  • Weight: 25.8 lbs

Request For Information

Have questions about QA1 GM Pro Front Coil-Over System - Single Adj. - 9in x 550lbs/in - Pigtail Large - Aluminum? Fill out the form below and we'll get back to you by the next business day.
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