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Bgm box pipe on a 250?

Posted: Thu Feb 27, 2014 6:02 pm
by wax
Hello peeps. I have a rapido 250 with a reed valve and wanted a tad more power and a little more over-rev than the current AF box pipe I have. I was put off the bgm one by someone who said the tail pipe is too small for a 250?

Is this an issue? Any thoughts would be great.

A Dyno compared to a standard AF clubman would help too, if anyone has tested the two back-to-back.