Addressing a common annoyance for Wolverine X2 and X4 owners—mud, debris, and air creeping into the cab. Designed specifically for Yamaha Wolverine X2 and X4 models (both 850 and 1000), MudBusters Firewall Splash Shields help block muck before it builds up around your wiring and in that firewall pit—saving you cleanup time and future headaches. They also minimize airflow under the firewall, reducing unwanted heat or cold air in the cab. We are confident that's a welcomed benefit!