BMR 10-14 Ford Mustang Adj. Lower A-Arms w/ Delrin/Rod End / 18mm Tall Ball Joint - RedA arms are one of the most important, yet overlooked suspension components. They are the direct link between the front wheels and the chassis. Any deflection causes a change in alignment, which results in poor performance and driving feel. Fabricated from heavy duty 1. 25 inch, 0. 120 inch wall DOM tubing, deflection is eliminated with A arms from BMR's suspension. BMRs AA751 Lower A arms are equipped with greasable heavy duty ball joints, greasable