I was just wonder what it would help/hurt, I race Flat Track, and some MX, Other than that the occasional trip to the river. I know i risk getting sand/water ect. in the intake. But as far as hp is what I'm wondering. thanks in advance for any input.

 

My friend eliminated his airbox on his banshee by putting pod filters on the carbs

Great for added HP due to more air flow and less restriction - not sure on exact numbers but this is also a 2 stroke so gains will be different

Bad because he hit a puddle and sucked water in the cylinders and bent both rods

Stick with the protection of the airbox unless just flat tracking on dry days - mx gets a little too muddy and seems to rain often here anyways

They also sell these little side filter circles I put on my dirt bike they are small but open up the air box a bit and I never had a problem with water intake - I got they from White brothers I belive

 

it would depend on your mods. the stock 450r airbox with the lid off and aftermarket filter flow pretty good already.

 

well on my 400ex i didnt rilly notice much gain but i went mud riden and their was only specs of mud on my filter. and also your quad jumps a couple dbs.