Arlen Ness Carbon Derby Cover For Harley This Arlen Ness Carbon Derby Cover wraps the case in high gloss pre-preg carbon fiber for a clean custom finish. Precision CNC machining on the back ensures a flush, leak free seal with the factory gasket. It bolts on in minutes and puts that iconic logo front and center with a sharp performance focused look. Features: Constructed from premium pre-preg carbon fiber in aluminum molds After carbon cover is removed from the mold, the backside is CNC machined for a flat surface & location for the OEM gasket to ensure a proper seal Premium high-gloss clear coat is engineered and tested for UV resistance Arlen Ness logo featured on the bottom center of the cover Direct bolt-on design installs in minutes using factory or aftermarket mounting hardware / bolts (utilizes factory gasket)