a454elk

Mexicutioner
LIFETIME SPONSOR
Jun 5, 2001
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Anyone run the White Borther's E series muffler/pipe on the 99 WR or YZ 400? Do you need to do any jetting or other changes after putting this on? I have the opportunity to buy one and was curious as to what it would do for me and also what a good price would be. Thanks
 

WRFRK

Member
Apr 1, 2004
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I'm running one on my '00 WR400, but it came with the bike. I can't honestly say what difference it makes as far as power, but it does sound good :thumb:
 

a454elk

Mexicutioner
LIFETIME SPONSOR
Jun 5, 2001
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thanks
 

Studboy

Thinks he can ride
Dec 2, 2001
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a454elk,

My friend had one on his 98 YZ400.
When compared to the stock pipe, the E-series seemed to give a decent increase in mid-top end pull with plenty of torque still on tap down low.

The only downside to the pipe was the (I felt) excessive noise, even with the S/A installed.
 


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