Carb Sock Foam Air Filter Single Inlet 90mm HoleRamair sock style filters which feature one hole cut out of the foam are designed to pull over the trumpets of the carb or the engines air intakes. The complete set up with cable ties for the extra security. Features High performance twin layer foam Easy to clean using our filter maintance kit CK 003 100% hand made in the UK guaranteed against manufacturing defects for life (single user, non transferable) Long lasting and hard wearing Unit Quantity