ROK 125cc single-cylinder 2 stroke engine, with reed valve admission in the crankcase.

· Bore: 54mm
· Stroke: 54mm
· Displacement: 123.95 cm3
· Capacity: 22KW a 11500 rpm
· Max Torque: 19.6 Nm A 10000 rpm
· Max RPM: 13800 rpm (electronic rev. limited)
· Carburetor: Dell'Orto D.30 or with diaphragm
· Fuel Pump: Dell'Orto
· Exhaust: Exhaust with intake silencer
· Drive: Centrifugal dry clutch