best power gain aftermarket pipes 400ex

[greenray]

i am in the market for a pipe for a 2004 400ex. what's the best low vend hill climber, and who has the best all around? i like the looks of the dmc alien but does it have any balls? i heard the trinity and the hmf are pretty good. PS. " RIDE RED OR LEAVE IT IN THE SHED"

[badASS4man]

HMF all the way
or Curtis Sparks
:yup:

[Oldschoolin86]

If you want low end then stick with the stock head pipe, that thing is killer. An HMF slip-on will work, I like the Pro Circuit better.

Just a tip, if you've got a pre 450r look-a-like then you'll want to drop a tooth on the front. Makes a big difference.

[NOS_350X]

HMF and Sparks are by far the best. Esr is close behind.

And the alien pipes are junk from everything ive herd.