Aluminum rear reduced suspension holder for the BACK of this rear suspension. Redesigned to go the internal pivot location closer to the automobile center making it possible for longer suspension system arms and updated suspension system geometry. The narrower design increases rear traction. The aluminum suspension system holders feature built-in Suspension Settings (I.S.S.) allowing for fast & simple suspension geometry set-up. Machined from premium Swiss 7075 T6 aluminum and black colored coated. Utilizing eccentric suspension system bushings inserted into aluminum suspension system obstructs, along side additional suspension shims, the XB2 suspension system geometry could be completely adjusted. Universal for both Dirt and Carpet edition.