Upper Eco-Comp control arm kit for 79-93 Ford Mustangs with SN95 suspension. Includes ball joints and bushings. Tubular control arms reduce unsprung weight while improving weight distribution in race applications. QA1 Mustang tubular control arms require the use of QA1 coil-over struts. QA1 caster camber plates are recommended. Get a substantial weight savings of 15 lbs. per set! Eco-Comp Control Arms are built with poly bushings and engineered for performance. For use on the strip, the Eco-Comps offer value without sacrificing performance. Each kit comes with 1 left control arm and 1 right control arm.