• Single-cylinder 2 stroke
  • Displacement 125 cc
  • Liquid-cooled through external water pump
  • Oval exhaust and 2 boosters
  • Radial bearing C4
  • Bore and stroke 54x54.5 mm
  • Max power 43 HP a 13.900 Rpm
  • Max torque 14.000 Rpm
  • PVL analogical ignition
  • Carburettor Dell’Orto VHSH Ø 30mm
  • Arrow intake silencer
  • Fuel pump Dell’Orto
  • Rok Shifter 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

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.
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.


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