Aluminum paid off suspension system system owner the leading in regards to the straight back suspension system redesigned along with fresh HS bulkheads for an expanded range of set-up changes. The rear suspension holders allow installation in upright or inverted orientations, ultimately causing extra roll center places the internal hinge pins. The downward orientation related to suspension system system owner is used primarily for Dirt tracks. The upward orientation of this suspension owner can be utilized mainly for Carpet songs. The suspension system system holders allow usage of both long or standard suspension system supply designs. Machined from premium Swiss 7075 T6 aluminum and black coated. Fits XB4'21