The engine has the following features: single-cylinder 2 stroke engine with 6-speed gearbox with front clutch system, displacement 125 cc, 4 reed valve intake in the crankcase. Liquid-cooled through external pump (not supplied in the kit). The engine comes in a complete kit with Dell’Orto VHSH Ø 30 mm carburettor, Dell’Orto fuel pump, Arrow in- take silencer, moulded exhaust and exhaust silencer. Ready for a power of 43 HP, the Rok Shifter is the engine that provides the best combination of performance and operating costs. Technical Specifications Model Vortex ROK Shifter 125cc Description Single cylinder – 2 stroke 125cc Class Senior, Masters Cooling System Liquid-cooled through external pump Exhaust Shifter Rok molded exhaust Bore and Stroke 54x54.5 mm Max Power 43 HP a 13.900 Rpm Max Torque 1,4 Kgm at 9600 rpm Max RPM 14.000 Rpm Ignition PVL analogical ignition Carburetor Dell’Orto VHSH Ø 30mm Silencer Arrow intake silencer Fuel Pump Dell’Orto
