300ex white bros header?

[300exrider05]

Hey right now i have the hmf slip on. I am planning on buying the white brothers header also. How much more power will it acually add though and will i have to rejet again? Does anyone have it on there 300ex?thanks

[bigbadbrad]

i have it, really good setup, not sure on how much more powerbecause i put them both on at the same time, and yes you will have to rejet again to get the most out of it

[chapmanmd]

I ran the WB header with my Yoshi can until I get the whole Yoshi system for my 330. Loved the WB header. Cant go too wrong for the money.

[hondapro300EX]

Only thing I hated about mine is it turned brown after first ride. Couldve been a chemical I put on it thought.

[chapmanmd]

Mine turned brown too. Uncoated stainless.... If only they would ceramic coat it...

[ontarioracer#33]

i ceramic coated mine and it looks awsome would defnitly recomend getting it ceramic coated

[300exrider05]

ok well im going to order the wb header for my 300ex tomarrow.i probably will add a little power but will look a lot better and wont restrict it as much.

[300exrider05]

I finally got the wb header and put it on today. It looks like i might need to rejet again though because it does bog a little sometimes. Ive already rejetted it for the slip on and have a 128 in it but have done nothing else to the carb. Is there something i can adjust in the carb to let it have some more fuel?thanks

[YFZ450Ridr]

Originally posted by 300exrider05
I finally got the wb header and put it on today. It looks like i might need to rejet again though because it does bog a little sometimes. Ive already rejetted it for the slip on and have a 128 in it but have done nothing else to the carb. Is there something i can adjust in the carb to let it have some more fuel?thanks

mess with the fuel/air mixture screw

[bmf400ex]

what is your elevation? start by putting your air/fuel screw 2.5 turns out