jpier1--- THAT is surprising. Mine, and many others, fit perfectly! Sorry about your luck. Try another one.

 

Hey Pro rider. I throught I was the only one to have had problems with the filter fitting tightly. I purchased a Twin air and a KN filter for my '02 650 and neither of the two was a good fit! I ended up putting the stock filter back on my quad. Any suggestions anyone? Oh, I did buy the grease that Nyrock talked about for the K+N, but I don't think one should have to do that! Why can't the filter come from the factory with the correct fit just as the stock filter does?

Trane

 

I am about to convert my 02 airbox to 03. I hate that air filter design. That, and I hacked my airbox up enough that I would be better off with a new airbox.

By the way, I'm still greasing the K&N filter. No dirt has gotten by it. It sucks, but it is a good choice if you can stand the mess. You have to be careful no to grease the element too.

 

When I added a less restrictive snorkel and still had the stock filter I was way too lean and had to rejet. This tells me that the stock 02 filter is not the bottle neck in the air system.

 

The bottleneck is the snorkel and not the airbox. I just replaced my snorkel on my 03 and it tapers down at the end to a little over an inch diameter. Once I changed the snorkel, I was real lean.

 

I don't know about you guys...but my twin air filter fits perfectly. It is the exact same size as the stock foam filter, I took off the plastic housing that supports the stock filter and attached it to the TwinAir...dean on perfect. The best part I think outside of the performance and protection is the fact that cleaning it is a breeze with the TwinAir products (degreaser and filter oil - bright blue and tacky so you know it's protected well) and the foam is tough. I can squeeze the filter up into a tight ball in my and and wring it out and it stays like new after. I've cleaned and re-oiled it 4 times since July...in my opinion, a great investment.

 

Hey guys, can anyone answer my question from above about the twin air now that this thread is back to be active. thanks

 

Man, y'all resurrected this one from the dead!

gtchief - an answer to your question would be that there should be no gaps that would allow any air flow whatsoever to by-pass the filter element. If you feel the filter will seal well enough at the bottom to prevent this then go for it. My Uni filter snugs right up against the air box all the way around with no gaps as well as the K & N. I would think the Twin Air would too or they should be firing their engineers.[img]i/expressions/face-icon-small-happy.gif[/img]

 

gtcheif, if you see gaps at the sides, that is no biggy. The lid forces that twin air filter down against the lip of the airbox creating a seal.

The K&N doesn't use that filter frame thingy, and is somewhat stiff. The lid positively pushes it down agains the airbox lip and creates a positive seal at all locations except right next to the air inlet. At that point, the lid does NOT positively push the K&N against the airbox lip (it only has a couple of fingers to push with at that point). Hence the grease.

The K&N system filters better (they say) unless it leaks around the edge. Most K&N problems are due to a poor fit (unless you use the nyroc filter grease solution). Also if the K&N gets a mudbath, it isn't as safe as the foam

K&N is better for street machines. It flows better.