ROK SV Engine
Rok SV is the newest engine in the Rok line from Vortex. Designed to join reliability and high performance, ROK SV represents an evolutionary step of Vortex factory, always careful about the drivers’ needs.
The engine has the following features: single-cylinder 2 stroke engine, displacement 125cc, reed valve intake in the crankcase. Liquid-cooled through external pump, equipped with centrifugal dry-clutch and integrated electrical starter.
It is also equipped with a balancer shaft that reduces vibrations. The engine comes in a complete kit with: carburettor (Tillotson or Dell’Orto), exhaust with supplementary exhaust silencer and wire loom. Faithful to the Rok philosophy which combines reliability, ease of management and use and high performance, ROK SV represents the last evolution of the Rok engines range.
Download Engine Fiche Download Tillotson Homologation Download BrochureSpecifications
125cc | 2 stroke
Cooling System: Liquid-cooled through external water pump
Exhaust: Oval exhaust and 2 boosters
Bearings: Radial bearing C4
Bore and stroke: 54x54mm
Max Power: 34 HP a 12.500 Rpm
Max Torque: 20.2 Nm a 11.500 Rpm
Max: 15.000 Rpm (electronically limited)
Ignition: Selettra
Carburettor: Dell’Orto VHSH Ø 30mm or Tillotson
Silencer: Nitro KG intake silencer
Exhaust: Moulded exhaust with supplementary exhaust silencer
- Reed valve intake in the crank case
- Balancer shaft
- Integrated electrical starter
- Centrifugal dry-clutch
- Mixture-lubricated
- 5/3 transfer ducts intake
- Cast iron made cylinder CNC worked
