full hmf pipe for 250ex

[250exridder07]

on the hmf web site it says that a full system for a 250ex doesnt need to be rejetted and i just wanted to know if that would be correct or not.

[Diedrich]

im pretty sure u would have to rejet

[kxrider]

you dont have to rejet but you will foul plugs, and not see as much of a power gain until you do, its not a big deal to rejet pretty simple

[400ex#18]

i also run a HMF exaust, and i love it! They said i needed a 200 main jet, and i think it was way off...I also put a filter on and put a 185 main with pump gas...Then i droped the main jet to a 165 and run race fuel now. what is the stock jet on your quad?

im more than positive that u would have to rejet.

[One_Bad_400]

buy it ben, I can help you re-jet it, it's not that hard. it says you don't have to rejet, but to get the most out of it you need to, but you need to find out what the stock size jet is and buy a few different jets that are bigger than that

[Matt102]

Read my sig. I would also get a higher flowing filter too.