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Vortex Motor Model Junior ROK

Junior Rok has been developed for Junior Rok class purposely; thanks to its driving and cost-saving qualities, it is ideal for training young drivers. Over the years this engine has been the godfather of many young talents, who went then to the higher classes.

MAX POWER 22 PS à 11’500 RPM
MAX TORQUE 19.6 NM à 10’000 RPM
MAX 13’800 RPM

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 Dell’Orto VHSH Ø 30mm carburettor, Dell’Orto fuel pump, Arrow intake silencer, moulded exhaust and exhaust with integrated exhaust silencer, wire loom complete with battery and battery support.
Junior Rok offers incredible performance with unique management costs, making this category a perfect gym for many young drivers.

Cooling System: Liquid-cooled through external water pump
Exhaust: Oval exhaust and 2 boosters
Bearings: Radial bearing C4
Bore and stroke: 54x54mm
Max Power: 22 HP a 11.500 Rpm
Max Torque: 19.6 Nm a 10.000 Rpm
Max: 13.800 Rpm (electronically limited)
Ignition: PVL digital ignition
CArburettor: Dell’Orto VHSH Ø 30mm
Silencer: Arrow intake silencer
Fuel Pump: Dell’Orto
Exhaust: Rok moulded exhaust
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07 Feb, 2017