Got these as part of a package deal. I wasnt sure what bikes they were for but I searched a little bit and it seems like they fit Ducati 748-998, ST2, ST3, ST4, Supersport, Monster. KTM 690 Duke as well as some Cagiva and Moto Guzzi bikes. Either way I took some measurements 320mm diameter 64mm center bore 40mm center to center for the mounting bolts Price is $240 OBO