Aluminum reduced suspension system system system holder a corner with this straight back suspension system system. Redesigned to move the inner pivot location nearer toward automobile center allowing to work with longer and smaller suspension system system supply choices and unique suspension system system system geometry. The narrower design increases back traction. The aluminum suspension system system holders function incorporated suspension system system Settings (I.S.S.) allows for fast & effortless suspension system system geometry set-up. Machined from premium Swiss 7075 T6 aluminum and black colored colored colored coated. Using eccentric suspension bushings put in aluminum suspension system system system system obstructs, along with extra suspension system system system shims, the XB4 suspension system system system geometry are completely modified.