Aluminum repaid suspension owner the BACKSIDE with this right back suspension redesigned aided by the new HS bulkheads for an expanded variety of set-up alterations. The rear suspension system system holders make it easy for installation in upright or inverted orientations, causing extra roll center areas the inner hinge pins. The downward orientation using this suspension owner is employed primarily for Dirt tracks. The upward orientation the suspension system owner is utilized primarily for Carpet songs. The suspension system holders allow usage of both very long or standard suspension system system supply configurations. Machined from premium Swiss 7075 T6 aluminum and black coated. Fits XB4'21