Who makes the best headers for a 400 EX. I want to use a White Brothers E-Series S-bend silencer. Will all headers fit all silencers. I am thinking about buying an FMF Powerbomb header but will it work with the White Brothers exhaust? Any help is greatly appreciated.

 

the powerbong and the pro circuit headers will fit slip on silencers. don't but others, because they won't fit.

 

to put it in simpler terms, the wb uses a bigger header pipe. fmf and pro-circuit use stock size. So no the fmf won't work w/ the white bros. I say go with the t-4 and a powerbo<u>mb</u> header, I just ordered a powerbomb today.

 

sorry about that, i thought everyone was familiar with the powerboNG. it is really called a powerbomb. just to clarify, the white brothers slip on silencer will work with this fmf and pro circuit header but the white brothers full system silencer wont.