Air box vent filters uni or white brothers
 

Does anyone use these little filters, and if so how do they work for air flow?

Air box vent filters uni or white brothers
 

I just took the lid completly off...

Air box vent filters uni or white brothers
 

I use them on the 250's. It is nice that they have filters, so they offer at least some protection vs just running with the lid completely off.

I run EHS Racing lids (with Outerwears) on my bigger quads, and I would recommend it for your Z, unless you are always in wet conditions.

Air box vent filters uni or white brothers
 

Sure do. I have 9 of the 1" uni's in the air box of my 700 King Quad, snorkel removed, and I give them a tiny bit of filter oil after cleaning them. I like them and I think they help.

Air box vent filters uni or white brothers
 

either take the lid off or remove the airbox completely. Those stupid lil uni filters did nothing but get dirty all the time on my bike.