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Old 10-17-2019, 10:59 AM
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expansion chamber exhausts are 100% a two stroke thing!
JT is correct there.

And that appears to be an NSR engine maybe an NS engine, not a CBR125

And while there are pre-muffler 4strokes with a somewhat bulged out pipe..
neither the Honda nor the above Suzuki is one of those..

'sid
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