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Single-cylinder 2 stroke engine with six-speed gearbox
Displacement 125 cc
Reed valve intake in the crankcase
Liquid-cooled through external pump
Push-to-start system
PVL analogic ignition
Dry clutch
Dell’Orto VHSH Ø 30mm carburetor
Arrow intake silencer
Dell’Orto fuel pump
Bore and stroke 54x54.5mm
Cast iron made cylinder
5/3 transfer ducts intake
Oval exhaust and 2 boosters
43HP at 13.900 Rpm
Max 14.000 Rpm
Shifter ROK molded exhaust
Exhaust silencer
Front clutch gearbox system
Radial bearing C4

The 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, 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 carburetor, Dell'Orto fuel pump, Arrow intake silencer, molded 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.