The Rok Shifter engine was born to meet the needs of many drivers who want to compete in a category with the gearbox, but always according to the Rok philosophy: low costs and steady regulations over the time. 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 two configurations: bare engine or in a complete kit with Dell’Orto VHSH Ø 30mm carburettor, Dell’Orto fuel pump, Arrow intake 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. See the ROK Cup USA Rulebook for complete rules and regulations concerning engines for a particular class. Supplied with: ENGINE KIT Reed valve engine 125cc single-cylinder, liquid-cooled, six-speed gearbox. Dell'Orto Carburettor VHSH Ø30mm Dell'Orto fuel pump Intake silencer Exhaust with exhaust silence Engine mount Technical Specifications Class: 125cc - Stock Shifter Class Description: Single cylinder – 2 stroke Bore: 54 mm Stroke: 54 mm Displacement: 125 cc Inlet system: Reed valve Lubrication: 4% oil mixture Ignition system: PVL analogic ignition Transmission: 6 speed gearbox/dry clutch Cooling system: Water cooled Dry Weight: 58 lbs Carb. Model: Dell’Orto VHSH Ø 30mm Max Power: 43 HP at 13.900 Max Rpm limit: 14.000 rpm ROK Shifter Documentation Tech Sheet Engine Seal Diagram ROK Shifter Manual
