Stomp Pit Bike 110 Air Filter Our pit bike air filters are designed to keep the dirt away. With an outer crud catcher & an inner sponge filter you can be sure the dirt won&226;&128;&153;t be getting in easily. Not only this but the quality air filter improves air flow & assists in even running. Easy to clean & long lasting this is a must have for your pit bike. The fitment point of 40mm means this air filter is suitable for most 70cc -125cc pit bikes. We recommend the use of an air filter oil for off roading to obtain maximum effectiveness. A clean air filter is essential for optimum performance & reliability. Summary: 40mm Fitment Fits 70cc-125cc Stomp pit bikes Outer crud catcher Inner sponge filter