Jetting question

[Goob]

I have a 09 400x I just bought a hmf sport series full system and I have a k&n air filter I also ordered the keihan hex jet kit the recommendation were 180/200 and I was wondering if I needed to change the pilot jet as well all that came with the kit was main I will not b racing just trail riding any suggestions will help this will b my first time jetting

[416exman21]

on the stock carb it should have came with the specs on the jetting and everything-----main 165keh. pilot 50keh. 2 1/2 turns on the air mixture screw or maybe 3 no higher it should run great ----i would just get the jets for the carb no dyno jet or any other crap --some may dissagree but its all opinion good luck

[Goob]

Thanks for answering man I bought a keihin jet kit and got a 42 pilot hope I have some luck with it

[tri5ron]

Excellent info here...
http://www.exriders.com/vbb/showthread.php?s=&threadid=394028