VERTEX18 02060T18 SPECIFICATION Output : 2.1 bhp@32000rpm Practical RPM : 4000~40000 Displacement : 2.95cc (0.18cu.in) Bore : 16.5mm Stroke : 14.0mm Weigth : 258g SCAV : V3 (4 Port) Carburetor : Rotary Pullstart engine with Side Exhaust