White Brothers E-Series Pro-Meg Silencer

I just purchased a White Brothers E-Series Pro-Meg Aluminum Silencer - Shorty for my 1998 YZ400F. I've been told that it can be run with a stock head pipe. I am interested in possibly purchasing an E-Series head pipe and would like to know what the performance difference is between using the stock head pipe and a E-Series head pipe.

Since nobody seems to know about using it with the stock pipe. Does any one have any experience using it with a head pipe? Just wondering if they liked it or not.

Any info would be greatly appreciate.

Head pipes won't make any difference unless you're talking about some sort of (FMF) "powerbomb" chamber. The Pro Meg is a great pipe and properly tuned makes great power.

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