Is a full exaust the same for a 440 or a 400?

I was wondering befor I buy my new exasust systeme, I'm going for a 440 motor, if I have to ask for a 440 exasust or they'r the same ase the 400 one's ?

I thinking of going with a Curtis or a LRD full exsaust, what do you think?






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Stock 99 400ex ... for now.

[exriderdude]

:huh yea there the same, why would they be different

They would be different beacuse the compression is different and pressure comming out of the 440 is not the same as the 400, no?









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Stock 99 400ex ... for now

[JabberJaw]

I like the Big Gun 'Race Series'... the header is alot bigger than the normal Big Gun kit.

[eldoexrider01]

as long as it is the pipe for your bike model it will be the same

sparks makes 2 different pipes. the x-4 and the x-6. the x-6 is more of a big bore pipe but works the same on a stock bore. LRD only makes one pipe and it works with all sizes. If you want a good pipe for a good price buy a hetrick racing pipe. it flows great and sounds good. I have one and i love it.

[440ex kid]

Gt thunder makes good pipes, but they recomend then for built motors. My friend runs one on his 440 and its a great pipe. Its pretty expensive though, $550.