125-200cc KNN air filter for my WR125

Hi, is it advisable to use KNN air filter on my WR125?

Are you asking about a pleated paper filter? That is what I think of for KN never heard of Knn.

Fran

Not advised for use in wet conditions. OK for street and desert. I suggest Uni, Twinair or similar filters.

K&N are not pleated paper. They are made from surgurical gauze with special oil coating. They flow more air than most foam filters but will also pass water easily into your engine. Some think dirt can also under some circumstances.

Not quite sure what I am looking at in the picture but I suppose the original question involves not only the filter but the air box as well. I can't add too much at this point. I had/have kn filter on British twin bike which the original air box was no longer there. Much better than the velocity stacks it had on it when I got it. Off highway equipment like ag tractors or bulldozers have that pleated gauze type of filter but in a well designed ductwork. Years ago they had an oil bath the air bubbled through and then some filter the oil got wet. I have heard that was stopped primarily because folks poured the dirty oil on the ground but don't know.

thanks for the advise. guess i'd stick to the conventional foam air filter instead of this.

I run K&N filters on my dirt modified. We see alot of dirt and dust over a 20 lap race. And I never had a engine failure using these filters on a 500 hp small block. I do run a outer wear over it and that helps as well. I wounldn't scrap it. I just don't know how the work in wet weather. Come to think of it I also used them when I race quads.