Are you guys using the stock metal insert to keep the filter from caving in when the bike is running? Or are you running it without one? I had a K&N on my Z400 so I have never used an after market foam filter.
Yes that is what I am talking about! I have the billet ring that comes in the kit, but I just wasn't sure about whether anyone was using the inner metal cage type ring? I wasn't sure if it matters if it caves in or not. Like I said I used a K&N on my last quad which is a rigid type filter.
i asked curtis sparks this when i ordered mine. they said that the amount of vacuum created by the 450r is not enough to cause a problem... especially since the filter flows so well. my WB filter came with an insert and i haven't used the insert yet. i haven't noticed a problem.
I thought the same thing...so I watched mine while reving the piss out of it, and the filter never even moved.....that filter lets alot of air flow through it....trust me it works great...you dont need anything in the filter.....