Performance Machine Race Series Derby Cover For Harley Touring Not only is the Race Series Derby Cover from Performance machine more elegant than stock, but it dissipates heat more efficiently than the stock cover. Painstaking hours were spent chasing forms and shapes which transfer heat more efficiently away from the engine & transmission to better accommodate increased temperatures synonymous with racing. To top it all off, this derby cover features a Black Ops finish with laser engraved logos to provide a durable yet, elegant appearance. Features: CNC machined from billet aluminum Dissipates heat more efficiently than stock covers Provides a race-inspired look Black Ops finish Chrome hardware and gasket included