This is a brand new VITO's PERFORMANCE billet airbox adapter for a factory airbox
This pro flow adapter eliminates a fatal flaw with the factory design, where dirt and dust can creep in BEHIND your filter, and DESTROY your engine
This is sized for a standard aftermarket UNI Pro Design FOAM PD-207 filter (sold separately) - 3.5" wide oval
This includes mounting bolts, and o-ring gasket seal
This fits the stock Yamaha OEM airbox, and WILL FIT WITH THE LID, unlike many other styles