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Discussion Starter · #1 ·
ive doing the exhaust soon on my cafe CB125.
remember hearing people talking about back pressor and things like that. would love to know where to get info on how to do it right. dont just want to core the stock pipe and only make less power.
any help would be great.
its on a 74 cb125s. high compression piston, cam, big valve head, 26mm carb

There is the right way, the wrong way and the british way to do anything!
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