Brand New Race-Driven MudRat Brake Rotors You will receive 2 MudRat Front Brake Rotors that will fit the following Fits : 2009 POLARIS RANGER 700 4X4 EFI This new rotor design has been tested over numerous years in an effort to extend the life of brake pads in excessive mud and other abrasive conditions. The MudRat Rotor 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. We have found with.