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, 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 two configurations, bare engine or 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. Junior ROK engine restrictions: restricted exhaust header. See the ROK Cup USA Rulebook for complete rules and regulations concerning engines for a particular class. Supplied with: ENGINE KIT Reed valve engine 125cc single-cylinder, liquid-cooled, power valve, electrical starter. ell'Orto CarburettorVHSH Ø30mm Dell'Orto fuel pump PVL ignition with limiter at 15.000rpm Intake silencer Exhaust Complete cooling system (complete radiator / water pump with pulley) Wire loom with battery support Battery*Does NOT come with engine mount. We recommend (and sell) the Odenthal EZ-Set 0 degree mount Technical Specifications Class: 125cc - Stock Shifter Class TaG Description: Single Cylinder – 2 stroke Bore: 54 mm Stroke: 54.40 mm Displacement: 125 cc Inlet System: Reed valve Lubrication: 4% to 6% oil mixture Ignition System: PVL digital ignition Cooling System: Water cooled Balancer Shaft: Present Power Valve: Present Starter: On board electric starter Carb. Model: Dell’Orto VHSH Ø 30mm carburettor Dry Weight: 54 lbs Max Power: 36 HP at 12.500 Max Torque: 20.2 Nm at 11.500 rpm Max RPM Limit: 15.000 rpm (electronically limited) ROK GP Documentation Tech Sheet Engine Seal Diagram ROK GP Manual
