• Graphite extensions for aluminum back uprights • 2mm reduced roll center jobs • licenses to hold camber url in identical location whenever uprights rises • Lightweight • Premium-grade graphite item • Fits XB8 & XT8 aluminum backside upright #353366 • 2 pcs in set The graphite extensions for aluminum backside uprights #353366 function camber hyperlink mounting holes 2mm reduced allowing to get hyperlink reduced whenever hub rises to put on hyperlink in identical spot. Produced from premium-grade graphite product. Band of 2. Fits: XB8 Aluminum straight back Upright #353366