Alu Tuning Kit 72cc for 12V 50th Head

This kit is for engines with a 12V 50cc cylinderhead (16/19mm valves).
Aluminum cylinder: 63mm long and with 47mm bore.

Police version marked with 49cc.

This kit works fine with a 18mm carb.

Honda 12V Dax Monkey Gorilla + Skyteam