New pipe need jetting help

[Myrtle150]

Hey guys-
I just bought a White brothers R-4 full system for my 400ex. Since it doesnt come with jets, what sizes do i need to get?
Thanks

[throwinitup]

dude, it seems like 98% of this fourm is about jetting, do a search, call WB,


i would try a 160 with a 42 pilot and ditch the airbox lid...

[cals400ex]

we need to know if you have any other mods on the bike, air box lid on or off, what temperature it is outside, and what elevation your at.

[zippy]

There are some jet kits offered that DO NOT use dyno jet jets on ebay. I would recommend using one of them. some are very cheap for the number of jets you get . Go to ebay fill in your model and do a search for _____ jet kit.