[Dukedesmo]

I don't have an airbox on mine but have devised a breather system that runs to the under tank area anyway. Similarly on my 916 I have a custom airbox and breather box and on both a straight hose does the job.

It's not as if it's on show anyway, whereas the crankcase to breather box would be tricky to do a neat job with anything other than the correct part due to the double bend in it.

I did have the original breather to airbox hose for mine but, unfortunately another forum member had it from me a while back.