Yamaha R15MAttributeYamaha RX100
155Displacement (cc)98
18.6 PS @ 10,000 rpmMaximum Power11 PS @ 7500 rpm
14.1 Nm @ 7,500 rpmMaximum Torque10.39 Nm @ 6500 rpm
18.4 PSPeak Power11.0 HP (11.0 PS) @ 7500 rpm
1Number of Cylinders1
DOHCValve ConfigurationReed Valve (Two-Stroke)
4Valves Per CylinderNot Applicable (Two-Stroke)
58.0 mmBore50.0 mm (International Spec)
58.7 mmStroke50.0 mm (International Spec)
58.0 x 58.7 mmBore x Stroke50.0 mm x 50.0 mm
11.6:1Compression Ratio6.7:1
Liquid-cooledCooling SystemAir Cooled
Fuel InjectionFuel Supply SystemCarburetor (Mikuni VM20)
TCI (Transistor Controlled Ignition)Ignition SystemCDI (later models) / Point Ignition (early models)
Inline Single-cylinderEngine LayoutStandard
SAE 10W-40Engine Oil Grade2 Stroke Engine Oil (Separate oil tank for Autolube)
ElectricStarting SystemKick Start
YesEngine Kill SwitchNo
12 V, 4 AhBattery Power105−110 km/h (Factory/Tuned)
—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)
—Power Mode IndicatorN/A (Known for fast acceleration in its class)