its a marcus biney (sp?) original from at least 2 years ago now (creative carbon). JasonP ordered it originally then didnt use it, I got it from him. As far as im aware Marcus said he wouldnt make another cos it was so much hassle. It fits perfect but seems to let more noise through than a standard metal cover does. Also the clearcoat has cacked underneath the metal flange that holds it down, not that anyone can see that mind. Its a nice piece of kit and I know many people who want one, only way to find out is to ask the main man. I gave 250 for it.