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Old 06-09-2003 | 07:38 PM
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Sprink
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Default 4 Stroke Power Question
Given that comparisons between 2 and 4 stroke are difficult, I would say that the YS 91 is at least as powerful as the OS 91 FX.

You would have to go to a good 1.08 to make sure you have at least the same power.
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