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Speedfight 2 jetting?

I have a 2009 speedfight 2 50cc liquid cooled what will only do 44 pushing it I been told that stock jet is 72 and I currently have a 66 in it from previous owner would a 72 improve top speed? If not what jet size would you recommend? Thanks in advance
Josh, October 2022


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done
A few discussions on this subject from specialist forums:

https://forum.twistngo.co.uk/viewtopic.php?t=6249

https://www.scootershack.co.uk/threads/speedfight-2-carb-jet-size.29063/

You might get more objective answers in places like those.

Rjfj, October 2022
link Click here to see other fixes for Speedfight 2.

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