Race-Driven Severe Duty Sintered Metal Brake Pads. You will receive 4 sets of brake pads to replace the front and rear brakes on your machine. Severe Duty Brake Pads are the newest design and tested compound by Race-Driven. They are a sintered metal pad which will far out last any semi metallic or organic pad on the market. Tested in our independent test facility these pads outlasted the most famous brands of brakes, they have many hours of testing in all environments. Race-Driven is committed to bringing the highest quality products to all riders at an affordable price.