Replaced the stock foam with K&N.
Which air filter do you use on your tw200 custom with a stock carb ? thank you !
Its my opinion that paper filters are not the best for dirt bikes. I Would think they are done once they get wet they wouldn't pass air once they wet. I also never used one on a bike so take my opinion for what that's worth
I wouldn't suggest the KN filter.Expensive,harder to properly clean,less filter area(so it seems at least). Use HifloFiltro HFA4202(OEM or even better quality),Yamaha 2JX-14451-00(OEM) or UniFilter NU-3219ST(a bit more free flowing).
The best practice in my opinion is to replace it at manufacturers intervals with one of the foam filters.
Uni for me
2007 Sportster 1200
My personal experience with K&N filters is if they get wet they will let dirt pass through. I had to rebore the cylinder of my Suzuki and clean all the crud from the carb after the K&N failed. Now I run the stock or a good after market oiled foam filter.