This is a tough one. In Holland, the message is spread that the K&N and DNA filters are not as good as paper filters for off-road and dusty conditions. Foam filters are the best but need more maintenance.

I am no expert in filters and can not contribute to the discussion. But I am a little bit suprised that the DNA website does not discuss this issue. Also, wouldn't it be nice if your racing department would show a couple of MX or Rallye riders? I am very interested in DNA's view on this issue.

Just my 2 cents ...