Aluminum paid down suspension system system owner 1° toe-in leading linked to back suspension system system. Redesigned to get the internal pivot location nearer to the car center allowing to utilize longer and smaller suspension system supply options and brand new suspension system system geometry. The narrower design increases straight back traction. Suitable for high traction tracks specifically for carpeting songs. The aluminum suspension system system system holders work vital suspension system Settings (I.S.S.) that allows for fast & effortless suspension geometry set-up. Machined from premium Swiss 7075 T6 aluminum and black colored colored colored coated. Making use of eccentric suspension system system bushings placed into aluminum suspension system system system obstructs, with additional suspension system system shims, the XB4 suspension system system system geometry is totally modified.