With this design you can easily adjust camber track side
This ensures full thread engagement for safe usage
Increased power and excellent scuff protection
Upgrade your rear end housing with polyurethane bushings to improve ride quality and performance
Rear spring rates - 160 lbs/in dual rate
A-arms, Upper, Non-adjustable, Delrin, Std Ball Joint 2013 Ford Mustang With this design you canA 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. 095 inch wall DOM tubing with laser cut, CNC formed plate steel braces for extra strength, deflection is eliminated with A arms from BMR Suspension. BMRs AAU401 Upper A arms