Race-Driven Severe Duty Sintered Metal Brake Pads. You will receive 1 set of brake pads to replace the parking brakes on the following: 2019 2020 2021 Yamaha Wolverine X2 R-Spec YXF85 YXE85. Severe Duty Brake Pads are the newest compound design by Race-Driven. Tested in our independent facility, this sintered metal pad outlasted the most renowned brake brands, semi metallic, organic, or otherwise. Race-Driven pads have withstood hours of trial in all environments, and will perform exceptionally in all conditions. Whether it's mud, water, sand, racing, or any other situation thrown at them, these pads aim to impress. Race-Driven is committed to bringing the highest quality products to all riders at an affordable price. Customer Driven – Quality Driven – Race-Driven.