Replacement Yamaha & Scooter Air Filters. Best Brand Manufacturer of Air Filters to OEM Specifications or Higher. Best Consumer Value - Best Quality - Best Price - High Performance. Constructed using the Best available Materials. Replacement air filters far cheaper than the genuine air filters. Developed for modern high performance motorcycle engines. Manufactured to fit original factory fitted air box. Direct replacement of original equipment air filters. No need to change carburetor jets or settings. Top quality power-flow filtering media. If you have a Jap bike & cannot find your part on this or one of the following pages, we may have neglected to add it here or have just not yet found the time to update the category. Select your bike model from the Japanese categories to the left of this page. We also have parts for other manufacturers which you will find in the parts by type categories