Brand New Race-Driven MudRat Brake Rotor and Severe Duty Brake Pad. You will receive 3 MudRat Brake Rotors and 3 Severe Duty Brake Pads to replace the front and rear of your machine. The MudRat Rotor is made from tempered stainless steel and is a solid rotor design which keeps mud and other abrasive materials from filling in the vent holes and prematurely wearing your brake pads. These rotors are designed to be used in 90% mud grade or higher. If you are an aggressive mud rider this is the rotor for you. Race-Driven Severe Duty Brake Pads are a sintered metal pad which will far out last any semi metallic or organic pad on the market, these pads will work excellent in all conditions. Race-Driven is committed to bringing the highest quality products to all riders at an affordable price. Customer Driven – Quality Driven – Race-Driven.