K&N powerlid

[EX400rider]

Hey so i hear the K&N powerlid will give ya some power. is it true? also how do u have to maintain em'? I have a K&N airfilter. Kood ya please just tell me about em?

Thanks!!

[TRX23rider]

i have a powerlid on my 400ex and i gave me decent power all around. as far as maintanince goes you clean it the same way you clean your k&n filter and do it as much as possible