1. 

   Louis Stevens New Member

   Messages:

   4

   Hi I have a 50cc zip with a yasuni z 75 jet and a hole in the air box and 6.5g rollers it only does about 43mph and I’ve heard it should do around 50mph at least what could be the problem???

    

   Louis Stevens, Aug 1, 2019

   #1
2. 

   Louis Stevens New Member

   Messages:

   4

   Also is painfully slow uphill??

    

   Louis Stevens, Aug 1, 2019

   #2

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