Take off Air box lid

[WhY_ZeE]

Hey, I just bough an ATV Power Kit for my 400ex and i 'll change my filter for a K&N. I'm thinking of taking off the Air box lid and put a pre filter.
Are the pre-filter mud proof? Is it perfectly safe to take the lid off and ride in mud all day or in sand for that matter ?:eek2:

[ridered86]

i ride with mine off all the time except for a really muddy day. i have the outerwear and have had really no problems with water and when the box fills up a lil just pull that drain plug.

[Steve-o 400EX]

Originally posted by ridered86
i ride with mine off all the time except for a really muddy day. i have the outerwear and have had really no problems with water and when the box fills up a lil just pull that drain plug.

Yep thats about it, the outerwears are somewhat water resistant, but not totally. A long as ur not goin in really wet conditions youll be fine.

[WhY_ZeE]

Well if i want to put it back when its wet i'll have to re-jet my bike...?

[4TraxRider]

Depends if you mind the slight power loss and drop in throttle response. If your only going to run the lid every once ina while, i wouldn't bother rejetting unless your running the engine to lean or rich so that it will hurt it. Chances are if its muddy anyway, you won't notice the slight loss.