PIECES OF THE PUZZLE
WHILE redesigned upper control arms are part of a larger suspension system, they don’t typically require additional modifications to work. “There’s no reason to run things like ball-joint spacers,” says Troy. “We rotate the ball-joint cup in the arm to maximise down travel.”
Michael adds: “Ball-joint spacers or extended ball-joints also place additional loads on the weak factory arms and can cause cracking.”
With aftermarket control arms coming into their own with any lifts over 40mm they’ll typically be recommended in conjunction with diff drops, but they’re separate products solving separate issues. The diff drop helps correct CV angles, essentially adding strength to the front end. Control arms upgrade the factory’s weak arms and provide more clearance and better handling. Two sides to the same coin.