Brake Pads for Yamaha Grizzly YFM450 4x4 2012-2014 Front Brakes by Race-Driven Race-Driven Front 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 2012 - 2013 - 2014 Yamaha Grizzly 450 YFM450 4x4