Whats the best pipe?

[NumShot68]

hey,



can someone tell me what they think is best the pipe for a 2004 400ex? i want somethin loud.....just a slip-on... and somethin that will give me a good horse power gain...also.... somethin tha wont cost $1000000 and does it require jetting? if so, what size jet?



thanks,
NumShot68 :blah:

[Pappy]

http://www.exriders.com/vbb/search.php?s=&action=showresults&searchid=642629&sortby=lastpost&sortorder=descending



try reading thru a few of those posts

[Jingle 11]

might wanna try searchin but the best slip on there is will be an HMF it will take around 155-165 depending on elevation. A needle change and fuel/air mixture screw will also need to be tweaked. but thats whats gonna happen on all pipes the hmf is one of the cheaper pipes also prce wise.