Just a word to the wise.  If anybody has changed or cleaned their air filter on a cfmoto I%u2019d suggest checking the boot.  Now I think a clamp should be tight to work as well a clamp.  What%u2019s the point of putting in a good aftermarket air filter in if the cfmoto factory boot sucks.  This will let dust and dirt in so no point even having a filter.   A trip to the local Home Depot for a piece of abs pipe fixed it up

[2015 Z Force 800 53/Trail EPS]

That's a first.

The boot is very thin plastic.  It buckled right where the clamp bolt is. 

not a first, went to change air filter today and found same thing on my, hoping I haven't done damage to engine, by turning tube around to avoid the ring on the end it, leaves tube weak when you clamp filter on tube, and if you tighten it a little to tight that is the result. For now I have a piece of PVC inside tube to strengthen it