I was looking to get a white brothers (I think they make it LOL ) rev box to raise my limiter by 1000 rpm than stock............if any one has this your input would be most helpful

 

White brothers sells one made for the XR400, it's not setup right for the 400EX. Don't buy that one or the big gun one, unless you want coldstart problems, you have to start up with the stock CDI sometimes, which is ok if you do not mind the hassle.

 

I was told by my honda dealer that the box is not worth the money and so i got some more opinions and they all told me unless you are doing major motor work there is no need for the upgraded cdi box.

 

I have a friend that has one with a e-series and my ears were blown out after i road with him.(i highly recomend it)(very loud and sounds awsome)

 

Well the reason I was concidering it was due to the turbo I am working on putting on it right now,so still looking for moreinfo on this if anyone out has one personally