This is an optional XRAY Front Upper "Set Screw" Suspension Arm, in Hard Composite material. This front upper suspension arm is made from hard composite material, for use on either left or right side. The hard composite material makes the car more stable, best when driving in high-traction conditions or in hot weather.
This arm has been redesigned to work with the updated front upper arm holder. With the 1-piece design of the suspension holder, the arm includes an updated mounting hole for a set screw that secures the arm to the pivot pin to ensure the arm will not fall out. With the updated mounting of the front upper arm, the upper eccentric bushings were redesigned to be straight through.