Brand New Race-Driven MudRat Stainless Steel Brake Rotor You will receive 1 brake rotor to replace the front brakes on the following: 2016 2017 Polaris 850 Scrambler 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 numerous models, especially Can-Am Gen 2 models, the factory stock pads do not.