Aluminum reduced suspension system system holder a corner of this straight back suspension system system. Redesigned to maneuver the inner pivot location nearer toward automobile center enabling to make use of longer and smaller suspension system supply options and unique suspension system system geometry. The narrower design increases straight back traction. The aluminum suspension system system holders function integrated suspension system Settings (I.S.S.) enables for quick & effortless suspension system geometry set-up. Machined from premium Swiss 7075 T6 aluminum and black colored colored coated. Using eccentric suspension bushings put into aluminum suspension system system system obstructs, along side additional suspension system system shims, the XB4 suspension system system geometry are totally modified.