Aluminum air box filter?

[2001300exguy]

i have a 400ex with an aluminum air box with the k&n. ive heard that only certain filters will fit the alum. air box and that the stock 400 filters will not fit. the reason i am asking is because i wanted to use a foam filter instead of a k&n for better filtering

[2001300exguy]

bump anyone

[hondardr4life]

Just buy a twin air.

[rubiowner01]

Originally posted by hondardr4life
Just buy a twin air.

thats what I have works and fits great

[NacsMXer]

Anyone know if a Uni is the same size as a Twin Air?

[RiderTRX400ex]

SHOULD BE IM GUESSING...