Motorcycle Brake Disc CRM125R CRM250X 2002-2009 Fit For Honda CRM125R CRM250X 2007 CRF450R CRF450X 2002-2009 motorcycle rear brake disc rotor direct hub mounting , aligns with bolt hole positions , no drilling or extra adapters required stable friction braking , delivers responsive stopping power during offroad downhill riding material with anti rust surface treatment , to mud water temperature wear cut ventilation slots for fast dissipation , avoids brake under continuous heavy braking OEM matched diameter bolt layout , easy direct replacement of rear brake rotor