Info

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.

Cooling System
Liquid-cooled through external pump

Exhaust
Oval exhaust and 2 boosters

Bearings
Radial bearing C4

Bore and stroke
54×54.5 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
3/3 transfer ducts intake
Exhaust silencer ROK in aluminium
Magnesium engine mount