John (Piedmont, CA )
It is so easy to put these on and when they are used to throw them away. Shortly after opening the bag I usually massage the filter while still in the bag to ensure the oil is re-distributed a last time, and maybe its overkill but to also ensure its freshly made tacky. I have used them on two KTM 2-strokes and on two Yamaha 4-strokes. I started using them about 7 years ago. It is so easy. I also have not had any problems with dirt or silt getting past which is key to a lasting motor.
dan (newport )
2009 kx450, serves its purpose
John (Catonsville )
I have had K & N filters on previous bikes and found them to be durable with increased air flow when compared to the OEM filters. While the filter fit perfectly, installation was a bit more complicated than I had expected on my 2014 Voyager 1700, but this was due more to the airbox design than the filter itself.
gary (stanfield )
fit great fit was as it should be will get another one
Kyle (Esterhazy )
This product does not fit my kx450f.
Wayne (Grand rapids )
Wouldn't thread on straight. Crooked threading (no, I didn't crossthread it). No more k&n for me.