light oil inside the air box, before the filter....And make sure your filter is seated correctly and oiled.
Most of my old British bike's dont even have a air filter
If you do a search on the net you will still be left wondering which are best, it's all do to personal experience .
I have had a few MX bikes with foam filters that have had problems with dirt getting past. I would like to add, don't expect to fit a air filter and ride 1000's of miles without checking it. Like the rest of your bike . check it, clean it , look after it and it will last longer
Fun Riding
Dazzer
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