CFMoto UForce 500/800 2018-2022 Ridge Rider Disc Brake RotorsFits: UForce 500 2018 2020 UForce 800 2019 2022 Direct fit: No modification necessary. Rotors bolt to factory mounts. Non directional design fits left or right side. Solid Surface Design: In contrast to drilled or slotted rotors that may inadvertently hold onto debris, the solid surface ensures that mud, sand, and other debris common on the trail are less likely to get trapped in the rotor and prematurely wear out your brakes. Ridge Profile Design: