White Bros. R4 silencer-different diameters

Kawidude

D'oh!
LIFETIME SPONSOR
May 23, 2000
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I recently put a White Brothers R4 silencer on my '97 XR400. Once I got everything connected, I noticed there is a pretty big difference in diameter between the pipe connected to the White Brothers silencer and the end of the stock headpipe that it's supposed to connect to (the silencer pipe is almost a 1/4" wider than the headpipe). As a temporary fix, I wrapped the end of the stock headpipe with some header wrap/tape and then clamped the new silencer pipe onto it. It seems to work for now, but I'm wondering if anyone has a better way of dealing with this. Is there something easy I can attach to the headpipe to increase it's diameter without letting any exhaust out through the connection? Thanks in advance for any advice!
 
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