Need help in getting power out of my 2004 400ex!

[TRX04400ex]

I bought my 04' as a left over in july and i ride it about every weekend and as im sure u all went through its time to get more power but i dont know what to do to get a good amount of power out of it without spending massive amounts of money i have a yoshimura exhaust but i really want to see some power come out of this thing. what should i do?

[hondamanex400]

if your really wanting to see more power out of your 400, then i would go with a big bore kit, like a 416, 426, or 440. and increase the compression. i went w/ a 416 kit 11:1. also let it breath better w/ a K&N filter, with maybe a aftermarket lid to allow the most air flow. for these, your lookin at $130 for the piston kit, $35 for filter, plus another $30 for gaskets. all of these are the prices i got my stuff off of motosport.com. now the lid is up too you though.

hope this helped

to spend the least amount of money... get a big bore kit , high compression pistons and good air inflow and she will be ready to go

[JOEX]

Originally posted by imarida61
to spend the least amount of money... get a big bore kit , high compression pistons and good air inflow and she will be ready to go
How much will that cost?

[whiteflash]

a pipe, filter, and the right jetting should be a good start. maybe a 14t sprocket....

[smitht316]

i just did my big bore 426 kit and it cost me, 160 for piston and gasket set, 70 for clutch, 50 for cam chain, 125 for cam, and 75 for bore. so less then 500 for the big bore. but then i did the carb which was another 400. its not all together yet but im sure it will make a world of difference

[i_mangle_sht]

power and fun to hold you over

14t front sprocket $15 steel $25+ alum

slip on exhaust $200+

jetted/no lid airbox/remove choke/filter $35+

rev box $50+

easiest,quickest,cheapest way to noticiable power on a 400ex

[TRX04400ex]

so im getting the impression boring it out is the way to go but does anyone know any shops in jersey that bore quads because everyone that i know doesnt do quads