K&N had a button on their website for requests. I wrote and asked whether they could advise on an application for the 630. Got no reply. But there was a previous thread here if I remember correctly (with pics). It was quite complicated, replacing the airbox.
Did the request thing on K&N and DNA's pages a year or so ago for the 449/511, got the standard reply of "we're always developing new products, keep checking back blah blah" Basically a nicely worded palm off.
Seems like it would be crazy hard and expensive for K&N to manufacture a drop in filter for our bikes. The fact that only Twin Air makes a foam filter kinda confirms this. And foam is for both TE and SM, while K&N would really only be for SM's. Most bikes typically have about 5-6 choices for filter brands. We have one with OEM & Twin Air being the same. _
K&N air filters are not a good idea. Hold one up to the light and you will see all the huge holes in the filter media. They sacrifice filtration for flow. http://www.bobistheoilguy.com/airfilter/airtest3.htm
Not true - Uni makes a very good twin foam replacement filter for the 610's. I have also seen another Italian freeflow brand filter - cannot remember name now. To fit K&N on a SM you need to use a cone filter and it is a tight fit - often requiring a little squashing/ moulding of the backside of the filter against the frame.
Is it the Black Wind? http://www.htmracing.it/cms/index.php?option=com_content&task=view&id=50&Itemid=66&lang=en I've never tried it, but a chap on an Italian forum wrote that he tried it putting another filter behind it, to find out whether it allowed the dirt to pass or not. He wrote that some dirt and even some little pebbles passed. I read many things written by that chap and he seems to know what he talks about.
Do you have the p/n? I have searched every online retailer here in the US that I know of and not a single match for the TE630. Actually none even show a match for the Twin Air filter either but I went on Twin Air's website and got their p/n (155506) and then plugged that in online and able to order it from BikeBandit.com for much less than any Husky dealer. Just checked Uni's website and cannot find a match for the TE630? _
Yes it does. I bought a used SM610 filter on Ebay and it was identical to my stock filter. Twin Air lists the same p/n for 610 and 630, years 2006 and up. The filter frame was different on the 610 though but not the filter. _
I'm in this camp also. I've just read too much about K&N (and like filters) being just too porous in effort to be as free flowing as possible. It's an inherent issue: freer flow = more particle ingress.