Eliminate wheelhop and improve traction with an easy one hour installation. BMR's fabricated control arms are equipped with spiral fluted internally lubed high durometer polyurethane bushings. "On-Car" adjustable control arms are made from 1.25" x .095" 4130 chrome moly tubing. These control arms use custom 3/4" heavy duty chrome moly double adjusters and an be adjusted "on-car".