Roadmaster PredatorAttributeYamaha RX100
80.0Displacement (cc)98
6.00Maximum Power11 PS @ 7500 rpm
5.80Maximum Torque10.39 Nm @ 6500 rpm
6.0 HPPeak Power11.0 HP (11.0 PS) @ 7500 rpm
1Number of Cylinders1
2Valves Per CylinderNot Applicable (Two-Stroke)
47.0Bore50.0 mm (International Spec)
51.8Stroke50.0 mm (International Spec)
47 mm x 51.8 mmBore x Stroke50.0 mm x 50.0 mm
9.2:1Compression Ratio6.7:1
Air-cooledCooling SystemAir Cooled
CarburetorFuel Supply SystemCarburetor (Mikuni VM20)
CDIIgnition SystemCDI (later models) / Point Ignition (early models)
Single-cylinderEngine LayoutStandard
20W50Engine Oil Grade2 Stroke Engine Oil (Separate oil tank for Autolube)
6000Valve Adjustment Interval—
Kick StartStarting SystemKick Start
NoEngine Kill SwitchNo
0.071Power-to-Weight RatioNot Available (Old Model)
Euro 3Emission Standard35−40 km/L (User Reported)
NoPower Mode IndicatorN/A (Known for fast acceleration in its class)
—Valve ConfigurationReed Valve (Two-Stroke)
—Power Consumption1.3 Litres (Gearbox/Transmission Oil)
—Motor Power10.5 Litres (including reserve)
—Battery Power105−110 km/h (Factory/Tuned)