Motor Crankcase and Ignition/Clutch covers that protect against wear from boots, impacts, dirt, mud, and other debris Right side: provides protection for the clutch cover, water pump, and lower casing Left side: provides protection to the ignition cover and clutch actuator Molded openings to access the filter cover and oil cap Easy to install by utilizing the original crankcase and ignition/clutch cover bolts Resistant to high temperatures Designed not to interfere with boots Compatible with ACERBIS skid plates Fits: Yamaha YZ450F 2018-2021 YZ450FX 2021