Brake Rotor Disc & Brake Pads for Yamaha YXR660 Rhino 660 04-07 Rear Race-Driven Race-Driven Rear Standard Brake Rotor and Severe Duty Sintered Metal Brake Pads. Race-Driven exclusive sintered metal compound brake pads are designed to withstand extreme conditions Standard rotors are designed to replace original stock rotors 2004 - 2005 - 2006 - 2007 Yamaha Rhino 660 YXR660 4x4