i recently bought a 2002 honda trx400ex. it's completely stock except for the paddle's and the uni filter. i removed the plastic air intake pipe and the cover to the air box hoping to get more power, (speed, torque) but it's not much of a difference. i was thinking of getting a 440 kit but that can be pretty pricy. i also considered just getting a pipe (white brothers e series) but i don't think that will be enough for me. any info will be well appreciated.
thanks... [img]i/expressions/face-icon-small-wink.gif[/img]

 

if your looking for a lot more power its gonna be a lot of money. 400ex's aren't exactly horsepower monsters. for maximum power get an air filter, good pipe, 440 kit,and a cam. that'll be expensive tho.

 

thanks for the info. but how pricy do you think? and i think i'll stick with the uni. i don't care for k&n filters for atv's much..