The QA1 qapGD501-10450C GM Pro Front Coil-Over System delivers precise suspension control for Pontiac Firebird applications from 1977 through 1981. This double-adjustable shock kit allows independent tuning of compression and rebound valving, helping you balance ride quality, handling, and traction for street performance, autocross, road racing, drag racing, and street rod use. The front stock-mount design provides a practical upgrade path while maintaining compatibility with factory or upgraded QA1 tubular control arms.
The fully threaded shock body provides ride-height adjustment for dialing in the desired stance or fine-tuning vehicle weight balance. Included high-travel spring technology uses fewer coils and a smaller wire diameter to increase available suspension travel, reduce unsprung weight, and improve shock response. The included spring is rated at 450 pounds per inch and features a large tapered flat end for secure installation and consistent operation. Shock travel ranges from a 10.13-inch compressed length to a 17-inch extended length.
Built with lightweight billet aluminum coil-over shocks, the QA1 Pro Coil System is 100% dyno tested and serialized for dependable performance. The components are serviceable and rebuildable through QA1 authorized service centers, and the system is proudly made in the USA. Sold as a pair, this kit offers an easy bolt-in installation and includes QA1's Limited Lifetime Warranty for added confidence. This product is intended for automotive applications and carries a California Proposition 65 warning.
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