Upgrade your 1967–1973 Mustang with QA1’s Pro Coil System for modern performance and stance adjustability. This single adjustable coilover kit delivers sharper handling, ride quality, and durability in a direct bolt-in package. Featuring 10” coil springs with a 500 lb./in. rate, this system is specifically tailored for the heavier weight of ‘67-‘73 Mustangs with big block engines, giving you the right balance of support, comfort, and control. MODERN HANDLING & ADJUSTABILITY QA1’s single adjustable coilovers provide 18 settings of rebound and compression control combined in one knob. Easily dial softer settings for cruising or firmer settings for aggressive cornering, letting you tune your Mustang for any driving style. RIDE HEIGHT FLEXIBILITY Adjust ride height from factory stock height down to 2” lower. Whether you want to preserve a factory stance, achieve a more aggressive look, or fine-tune for wheel/tire fitment, QA1 Pro Coils let you make changes without compromising suspension geometry. EASY BOLT-IN INSTALLATION Direct-fit design means no cutting or welding required. QA1’s Pro Coil System bolts in with standard tools, making it one of the most straightforward suspension upgrades available for your classic Mustang.
Installation Instructions


This Part Fits:

Year	Make	Model	Submodel
1967-1973	Ford	Mustang	Base
1969-1971	Ford	Mustang	Boss 302
1971-1972	Ford	Mustang	Boss 351
1969-1970	Ford	Mustang	Boss 429
1970-1973	Ford	Mustang	Grande
1970-1973	Ford	Mustang	Mach 1
1967-1970	Ford	Mustang	Shelby GT-350
1967-1970	Ford	Mustang	Shelby GT-500
1968	Ford	Mustang	Shelby GT-500KR