Vortex Rok GP Engine

Classes: Junior ROK (with restrictions), Senior ROK, & Master ROK

The ROK GP engine is the next step in the Vortex engine line, and is used in the Senior and Master classes ROK and Junior ROK Class (with restrictions, see below).

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 water pump, equipped with centrifugal dry-clutch and integrated electrical starter. It is also equipped with a balance 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. ( Engine Mount is additional )

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

Junior ROK engine restrictions: restricted exhaust header. See the ROK Cup USA Rulebook for complete rules and regulations concerning engines for a particular class.