just did this to mine. Great idea!

I put the same Uni on mine a while back and it's been good so far. I understand the argument of it filtering 'backwards' (inside out) but it has worked well so far. In fact, we took it it to S. Dakota and rode for a week. It performed great.

What is the oil filter spray you used??

Appreciate the info, just bought an x-4 about two months ago. Have a lot to learn, can’t wait for the next video.

oil??

What the oil that you used for this??

I feel like if you put the filter up top you wouldn't need to take the box apart as often. Your way looks cleaner and less blocking your view potentially.

um to many um's

Only problem with this is that the Uni is a two stage filter and is designed to filter from outside-in. Would be better off putting it at the end of the intake (outside the machine). Nevertheless, better than no pre filter at all.