Aluminum Air Box Installation

[400exrider0004]

I have a 2004 400ex and over the winter I plan on replacing my stock air box with one of those aluminum air boxes. I was wondering what you guys think of yours, were you got them, how the installation was, and if you would recommend it!!! Post any pics of them if you have any!!! Any info will be appreciated!!

Thanks, Josh

[Chino886]

Originally posted by 400exrider0004
I have a 2004 400ex and over the winter I plan on replacing my stock air box with one of those aluminum air boxes. I was wondering what you guys think of yours, were you got them, how the installation was, and if you would recommend it!!! Post any pics of them if you have any!!! Any info will be appreciated!!

Thanks, Josh

I bought mine used, I like it. installation is not hard at all. I have the UM airbox.

[400exrider0004]

what companies make the aluminum air box replacement

[yamablaster24]

look on ebay but you get what you pay for. The 416ex i bought came with an Aluminum airbox but its awesome. Houses the battery and prevents the battery from bending the subframe into a pretzel

[400exrider0004]

Why does the battery bend the subframe?