ok i have a 2000 totally stock 400ex, i was wondering on the pipe situation. I read in my ATV mag that the white bros E-series gets the most out of the 400ex, can anyone back this up? Also does this come with a new head pipe or do you have to purchase taht serpately. Thanks i also plan on a kn with outerfilter, a dynojet kit and then put some holes in my air box. Any other resonable suggestions? thanks

 

I have the same situation and asked almost the same question. my reply was that they white bro's had a poor low end. will you need low end(tight trails/ tracks)? Because if you look close in your mag it shows poor low end. I think i might go with the procircuit t-4 and do the same thing your doin ecept for drilling the air box. If you have the money get a DMC i have never heard bad about it.

 

huh i still wonder because if you get the promeg series it comes with the s bend head pipe that is supposed to increase low end. e-series s-bend gives you like 2-5 low to mid range. I wonder then. DMC is good? i will gladly spend the money if it is a good pipe. Can anyone confirm this is DMC a really good pipe to get besides the price?

 

I really can't answer that question. I just got my 400ex. It already had the white bros pipe on it. I haven't ridden a stock one.

Come to think of it......anyone that has a white bros pipe, could you tell me if it has holes drilled in it for the stock heat shield?????? I may have been shafted with the silencer only!!!!!!!

 

Who told you the E-series makes poor low-end? My E-series made a HUGE improvement in low-end over stock, and the midrange increase was also very good, and just a little better on top end. I'd definitely recommend one, I'm really happy with mine. You can buy just the slip on (what I did), or you can buy the pro-meg, which costs about twice as much, and comes with a headpipe. I would recommend keeping the stock headpipe unless you're going to seriously race-mod your motor.

 

You won't loose bottom end on a whitebros. They are power adjustable by adding and removing discs. The whitebros pro-meg is a good running exhaust system, But if you want better, get the DMC. I have heard nothing but good reviews about it and have the dynos to back it up.

www.geocities.com/~gtthunder/testbed_set.html

 

You don,t need to change your stock head pipes unless you are planing to at-least change your cdi box. Thay flow well enough for just a slip on pipe.

BooBoo

 

The WhiteBros exhaust with header pipe does have welded-on nuts for mounting the stock heat sheild.

 

i was wondering if i get the white bros slip on, can i add a head pipe later?