Bore 54mm
Stroke 54mm
Displacement 123.95 cm3
Capacity 22kw a 11500 rpm
Max torque 19.6 nm a 10000 rpm
Max rpm 13800 rpm
(electronically rev. Limited)
Carburetor dell'orto d.30
Or with diaphragm
Fuel pump dell'orto
Exhaust system exhaust with intake silencer
Drive centrifugal dry clutch
 
 
 

ROK
ROK is a 125cc single-cylinder 2 stroke engine by Vortex, with reed valve admission in the crankcase.
It is mixturelubricated and liquid-cooled with integrated water pump.
It has got a digital ignition and an integrated electric starter, which the battery is dedicated to.
It is provided with a balancer shaft, which reduces the vibrations.
A centrifugal dry clutch makes it possible to keep the engine on even when the kart is still.