i have a 400ex stock and im looking at the white brother e series exhaust system but im not to sure if its what im looking for.
what im looking for is a pipe that will give me better acceleration and a better top end? PLEASE HELP ME!

 

I think the MBRP pipe is gaining alot of attention as a great pipe. You can checkout MBRP performance in the "navagation" thingy above. I you cant afford a new pipe like that , I am sure thier will be people selling they pipes when they switch over to the MBRP. I have seen a couple of bomb and rappy owners do it already. my .02



Biggerisbetter.

 

Bills or HMf both are kind of loud though.

 

XXXplosive,

Let me re-idorate, before I get jumped on.

I think you would see much improvement with any after-market exhaust, But MBRP is the only company at this time to get the big improvement of a LOUD exhaust in a quiet package. Their are alot of chioces out thier and most of them are good chioces, It all depends if you want a loud pipe or not. I personally have a LOUD pipe on my DS, but sometimes I wish I could hear myself think[img]i/expressions/face-icon-small-wink.gif[/img]




Biggerisbetter.