Could anybody tell me what kind of air filter and part number they run for riding in the dunes that directly bolts to the carb?

 

Couldn't tell you the part number, but call or go online to Duncan Racing, they sell a K&N bolt on kit that bolts right to the carb and eliminates the airbox. Other's may sell it too, but Duncan is the only place I know of right off the top of my head.

 

if you run the dunes with a K&N use a good outterwear just for you motors sake