I am installing TRW arms on my Box today to replace the URO arms I installed 2 years ago. 1 of the URO central bushings has moved 1/2" upward from the control arm. I am sure it would have continued to move further out but the track arm contacted the control arm & was rubbing it so I have to replace the track arm also. TRW makes these parts for Porsche. I considered the rebuilt Vertex arms but like Deutsche their reputations are not the best & having to do this work twice is no fun.
