Good weekend Guys:
The engine is approved. Many sold in Australia with excellent factory service if you need. In the States, you guys can contact Adrian from CH Ignition. Spare parts cost is very reasonable. There are many videos on youtube to watch.
There are few new models coming UMS 5/150CC, 7/360CC
Their full range engines: 5/55,5/75,5/100,5/125,5/150,5/180,5/210,5/260, 7/99, 7/160, 7/260 (REPLACED BY 5/260), 7/360, 9/115
Cheers
Team Austars Model austars-model.com