Aluminum back Lower Suspension Holder BACKSIDE for semi-split bulkheads provide an expanded variety of set-up alterations. The aluminum suspension system holders function incorporated Suspension Settings™ (I.S.S.) enabling for quick & simple suspension system system geometry environment. Using eccentric suspension system system bushings placed into aluminum suspension system holders – plus extra suspension system shims – the XB8 suspension system system geometry is wholly modified in just moments. Machined from premium Swiss 7075 T6 aluminum and black colored coated.