Engine Vortex ROK GP JUNIOR

Rok GP immediately conquered the hearts of drivers around the world, for his spirited soul and a practical structure, which aims to achieve high performance, while ensuring high reliability.

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 and power valve that improves performance and driveability at low rpm.

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.
True to the philosophy that favours ease of use and management, Rok Gp engine is aimed at all drivers who want to test themselves on a spirited and performing chassis.

Displacement 125CC

Engine 2 stroke

Cooling System Liquid-cooled through external water pump

Exhaust Oval exhaust and 2 boosters

Bearings Radial bearing C4

Bore and stroke 54.07x54mm

Max Torque 20.2 Nm a 11.500 Rpm

Max 15.000 Rpm (electronically limited)

Ignition PVL digital ignition

CArburettor Dell’Orto VHSH Ø 30mm

Silencer Arrow intake silencer

Fuel Pump Dell’Orto

Exhaust Rok GP moulded exhaust with integrated exhaust silencer

Reed valve intake in the crank case

Balancer shaft

Integrated electrical starter

Centrifugal dry-clutch

Mixture-lubricated

5/3 transfer ducts intake

Reed valve intake in the crankcase

Cast iron made cylinder CNC worked