Hero HunkAttributeYamaha RX100
149.2Displacement (cc)98
14.2 bhp @ 8000 rpmMaximum Power11 PS @ 7500 rpm
12.8 Nm @ 5000 rpmMaximum Torque10.39 Nm @ 6500 rpm
1Number of Cylinders1
SOHCValve ConfigurationReed Valve (Two-Stroke)
2Valves Per CylinderNot Applicable (Two-Stroke)
57.3 mmBore50.0 mm (International Spec)
57.8 mmStroke50.0 mm (International Spec)
57.3 mm x 57.8 mmBore x Stroke50.0 mm x 50.0 mm
9.5:1Compression Ratio6.7:1
Air-cooledCooling SystemAir Cooled
CarburetorFuel Supply SystemCarburetor (Mikuni VM20)
Digital CDIIgnition SystemCDI (later models) / Point Ignition (early models)
Single-cylinder, uprightEngine LayoutStandard
10W-30Engine Oil Grade2 Stroke Engine Oil (Separate oil tank for Autolube)
Electric start, Kick startStarting SystemKick Start
—Peak Power11.0 HP (11.0 PS) @ 7500 rpm
—Engine Kill SwitchNo
—Power-to-Weight RatioNot Available (Old Model)
—Power Consumption1.3 Litres (Gearbox/Transmission Oil)
—Motor Power10.5 Litres (including reserve)
—Emission Standard35−40 km/L (User Reported)
—Battery Power105−110 km/h (Factory/Tuned)
—Power Mode IndicatorN/A (Known for fast acceleration in its class)
