Brake Pads for Yamaha Rhino 660 YXR660 2004-2007 Rear Severe Duty by Race-Driven Race-Driven Rear Severe Duty Sintered Metal Brake Pads. Race-Driven exclusive sintered metal compound is designed to withstand extreme conditions Excellent performance in mud, water, sand, racing and any other condition you can throw at them 2004 - 2005 - 2006 - 2007 Yamaha Rhino 660 YXR660 4x4 705600150