Anybody have direct experience with the OTR air filter set up?

http://www.off-the-road.de/XT-660/XT...ilter-set.html

It appears to be a direct replacement (ie to fit in the same manner) as the OEM paper filter. Is this so?

Why is it necessary to replace the airbox cover to fit it?

Alternatively, open to suggestions of other brands of oiled foam element, if anyone knows of any?

I use these in my XTR...
If yer going anywhere near dust.. stay away from K&N / DNA style..

http://www.thepipercrossshop.co.uk/m....asp?model=209

__________________
Harley Davidson..
The easyest way to turn gasoline into noise with out the side efect of horse power...

Woopwoop Uni Filter do a foam filter, its listed as XT660X 05-06 but its the same.

Thanks gents, I'm checking them out.