It depends what you want to do. I'm personally a big fan of the Manic adapter.
I have a Boy go fast Z-80(66cc) with the Manic adapter. I'm running a 36 tooth and it hits 40 mph and pulls up steep long hills at 20mph. If you want good power all around with the 66 I like the 41 tooth. It tops out around 36 mph and pulls strong up every hill.
For off road the 44 is your best bet.
Originally Posted by twest
I ordered the bikeberry 66cc grubee skyhawk. Looking at the photos, I am not seeing a fuel filter or petcock. Does anyone know if they are included with this kit?
It's in their.