To protect the engine in extreme weather conditions, Twin Air designed a special Rain Coat (RC). The Rain Coat is an extra filter cover.
The cover can be used in extreme wet/muddy conditions but can also be used in extreme dusty conditions to keep the sand particles out of the engine.
During these extreme wet weather conditions, we advise to use the pre-oiled Twin Air filter (pre-oiled with Liquid Bio Power Filter Oil) and on top of that mount the dry Rain Coat.
The Rain Coat can be ordered for all Air Filter part numbers by adding the initials of the Rain Coat: RC
Example: The Rain Coat part number for Air Filter 154118 = 154118RC