I used the rubber hose from the stock airbox to throttle body.it looks like an L. I cut 3 inches off the end that used to go into airbox.then clamped a uni filter on the end.easy and cheap. The filter is nicely tucked behind right fairing and my mnnthbx fairing support bar supports the hole setup nicely. I had the uni filter crammed in the back of throttle body before. It didnt fit good and i had lots of throttle body noise. No more niose now this worked great