Rok Shifter

Displacement 125 CC
Max Power 43 HP a 13.900 RPM
Max Torque 14.000 RPM

Rok Shifter 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.

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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.

Displacement 125CC
Engine 2 stroke
Cooling System Liquid-cooled through external pump
Exhaust Oval exhaust and 2 boosters
Bearings Radial bearing C4
Bore and stroke 54x54.5 mm
Max Power 43 HP a 13.900 Rpm
Max Torque 14.000 Rpm
Ignition PVL analogical ignition
Carburettor Dell’Orto VHSH Ø 30mm
Silencer Arrow intake silencer
Fuel Pump Dell’Orto
Exhaust Shifter Rok moulded exhaust
  • Front clutch six-speed gearbox system
  • Dry clutch
  • Mixture-lubricated
  • Cast iron made cylinder CNC worked
  • 5/3 transfer ducts intake
  • Exhaust silencer ROK in aluminium
  • Magnesium engine mount