Aluminum Front-Rear (FR) suspension holder for Semi-Split Bulkheads offer an expanded selection of set-up changes. The aluminum suspension system holders function incorporated Suspension Settings™ (I.S.S.) makes it possible for for fast & easy suspension system geometry environment. Utilizing eccentric suspension bushings inserted into aluminum suspension system holders – and additional suspension shims – the XB8 suspension geometry can be completely modified in mere moments. Machined from premium Swiss 7075 T6 aluminum and black colored coated.