450r carb on 400ex jetting question

[EXriderO2]

i am about to install a 450r carb on my 400ex and i was wondering what jetting i should use i have a 11.1 piston full pipe kit and intake. my 400ex carb has a 160 main and 42 pilot. now what will it have to be for the 450 carb?

thanks

[KJS]

The carb comes with 48 pilot keep that . Buy 150 thru 160 main

[EXriderO2]

okay thanks anyone else have any sugestions?

[400exrapes]

well even though i havent read the forum the biggest forum on trx400ex information is on HOW TO:JETTING FOR 450r Carb

[skull2002]

depends some on where you are(elevation, etc)there are several excellent threads from very knowledgable riders here also. i am running a 185k main,55k pilot, screw out 1 3/4 turns, needle in stock position(3 rd notch). you will like the improvement!!!

[AbnMP13]

I've got a 450r carb sitting in my garage, I'm getting ready to do this myself.