But the styling on the MB5 is unlike most bikes of the era and it is a pretty bombproof chassis and motor.
I liked the styling too, but the bikes are so limited. I went all out on mine trying to gain that lower end power while maintaining decent top speed. My setup ended at...
70cc kit (athena i think)
6 speed CR80 trans swap
4 petal reed block upgrade
high flow filter.
It was just always a slug off the line. I know the homeot was more of a top end pipe, but there really is not a good low - mid pipe for that bike. I then picked up a trashed looking 4 speed Yamaha RX50 that ran and it was just such a better bike. Peppy and would still top out around 50-55mph. The MB5's are just flat out turds.
The day another RX50 pops up Im snagging it. If your going to own a 50cc consider something other than an MB5.