Engine, Vortex VLR

The new ROK VLR engine was designed solely with club racers in mind, whether it’s a new racer getting into karting, or for those looking to move up from a four-cycle powerplant. Also, for racers that want to update their current 100cc to a state-of-the-art engine package, this engine covers it all.

Building upon the successful line-up of Vortex ROK engines, VORTEX launches the new Vortex ROK VLR. The perfect platform for the entry-level driver, the ROK VLR not only offers superior performance over its rivals with lower maintenance, but it also offers some great features like electric start all at a cost racers can afford.

BORE : 48.20 mm
STROKE : 54.00 mm
CONROD C-TO-C DISTANCE : 102.00 mm
INTAKE SYSTEM : Reed Valve
CARBURETTOR : Butterfly Valve 24mm
INTAKE SILENCER : Arrow LA22
CYLINDER LINER/SLEEVE : Cast Iron Made Dry-Liner/Sleeve
TRANSFER PORTS : 3 Ports
EXHAUST PORTS : 1 Elliptical Port + 2 Boosters
COOLING SYSTEM : Air Cooled
LUBRICATING SYSTEM : Oil-Fuel Mixture Lubricated
IGNITION SYSTEM : Selettra
START SYSTEM : Integrated Starter Motor
TRANSMISSION : W/ Clutch
CLUTCH SYSTEM : Centrifugal Dry-Clutch System
COMPRESSION RATIO : 10.5 : 1
MAXIMUM POWER : 20Hp at 9800 rpm
MAXIMUM TORQUE : 1,4 Kgm at 9600 rpm
MAXIMUM SPEED : 16000 rpm