Just pulled apart the air filter on my '79 ATC110 because I hadn't checked it before and I'm planning on ripping up the beach in September and it looks like I need a couple parts. My rubber piece that connects the carb to the airbox has a hole in it. Looks like someone cut it... Next is the air filter itself along with the gasket that seals the box shut. The air filter was essentially very sticky dust and the gasket was split. I've seen some parts on ebay as far as filters but I'm not sure which ones will actually fit and work well against sand since I have nothing to go by.