YS Engines
91SR
DISCONTINUED HELI 2 -Stroke Engine *Regulated fuel system for positive fuel flow during all types of flight conditions. DISPLACEMENT：14.89cc BORE：27mm STROKE：26mm WEIGHT :...
91ST
DISCONTINUED HELI 2-Stroke Engine *Regulated fuel system for positive fuel flow during all types of flight conditions. DISPLACEMENT: 14.95cc BORE: 27.7mm STROKE: 24.8mm WEIGHT:...
50ST
DISCONTINUED HELI 2-Stroke Engine *Regulated fuel system for positive fuel flow during all types of flight conditions. DISPLACEMENT：8.17cc BORE：22.0mm STROKE：21.5mm WEIGHT :...
