Vortex Rok Shifter 125cc Shifter Engine Rok Shifter was born to meet the needs of many drivers who want to compete in a category with the gearbox, but always according to the Rok philosophy: low costs and steady regulations over the time. The engine has the following features: single-cylinder 2 stroke engine with 6-speed gearbox with front clutch system, displacement 125 cc, 4 reed valve intake in the crankcase. Liquid-cooled through external pump (not supplied in the kit). The engine comes in a complete kit with Dell'Orto VHSH 30 mm carburettor, Dell"Orto fuel pump, Arrow in- take silencer, moulded exhaust and exhaust silencer. Ready for a power of 43 HP, the Rok Shifter is the engine that provides the best combination of performance and operating costs. ***Features & Spec*** Cooling System: Liquid-cooled through external water pump(***water pump, radiator and hoses are not included in engine package***) Exhaust: Oval exhaust and 2 boosters Bearings:Radial bearing C4 Bore and stroke: 54mm x 54.5 mm Max Power: 43HP @ 13,900Rpm Max Torque: 14,000Rpm Ignition: PVL analogical ignition Carburettor: Dell'Orto VHSH 30mm Silencer:Arrow intake silencer Fuel Pump:Dell'Orto Exhaust: Shifter Rok moulded exhaust Front clutch six-speed gearbox system Dry clutch Mixture-lubricated Cast iron made cylinder CNC worked 3/3 transfer ducts intake Exhaust silencer ROK in aluminium Magnesium engine mount Model: ROK SHIFTER Shipping Weight: 75lbs Manufactured by: Vortex Engines Engines Picked Up At Shop include Shipping Costs