Thread: 139fmb Engine
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Old 08-18-2020, 01:43 AM   #10
BlackPowder   BlackPowder is offline
 
Join Date: Aug 2020
Posts: 6
So it would be possible to get it down to around 25mph?
If that is the case, what engine size would be better as far as:
Availble service and tuning parts and overall longevity\reliability?

107cc (152fmh) vs 125cc (154fmh)


 
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