Brake Pads fit Polaris RZR Pro XP 2020 Rear MudRat by Race-Driven. Brand New Race-Driven MudRat Brake Pads. You will receive 2 sets of brake pads to replace the rear brakes on the following: 2020 Polaris RZR Pro XP. MudRat Brake Pads are the newest design and tested compound by Race-Driven. They are a 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. These pads will work excellent in all conditions including mud, water, sand, racing and any other condition you can throw at them. Race-Driven is committed to bringing the highest quality products to all riders at an affordable price. Customer Driven Quality Driven Race-Driven. While we aim to supply accurate product information, it is sourced by manufacturers, suppliers and marketplace sellers, and has not been provided by Overstock.