400ex power

[motocroser400ex]

i own a 2002 400ex i have just bored it with the tc425 piston and was wondering what kind of pipe i should get. and anything else i could do in the lower price ranfe to hop up my power.

[Atreyu]

For pipes stick with the engine builders. IE:Sparks, LRD, ESR, etc. They will most likely be putting out the most power. HMF's have had good reviews too though.


Also, did you get a cam with your 425 kit? Carb?

[Foxnake42]

uni filter, sparks pipe, hmf pipe,xr400 cam is hugely noticable power, WB rev box

[motocroser400ex]

do you know if the ct full race exhaust is good? i read in a magazine that it was the best and you can tune the sound.