Re: derestricting stock a55 exhaust?

Full Tuck /
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I wrote that wiki article. Its a poor-mans homemade expansion chamber, not as good as a cheap aftermarket pipe, but better than stock and finding something to mount up perfectly on a revival is tricky.

my modified stock revival would do 45mph with re-gear and airbox mod and carb tuning. I would suggest gearing it for about 40mph cause it didnt have enough torque in upper rpms.

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