Yamaha RX-135AttributeYamaha RX100
132Displacement (cc)98
15 bhpMaximum Power11 PS @ 7500 rpm
11.4 NmMaximum Torque10.39 Nm @ 6500 rpm
1Number of Cylinders1
2 valvesValve ConfigurationReed Valve (Two-Stroke)
2Valves Per CylinderNot Applicable (Two-Stroke)
54 mmBore50.0 mm (International Spec)
54 mmStroke50.0 mm (International Spec)
54 x 54 mmBore x Stroke50.0 mm x 50.0 mm
6.9:1Compression Ratio6.7:1
Air-cooledCooling SystemAir Cooled
CarburetorFuel Supply SystemCarburetor (Mikuni VM20)
Transistorized Coil Ignition (TCI)Ignition SystemCDI (later models) / Point Ignition (early models)
StandardEngine LayoutStandard
2-Stroke Engine Oil for main lubrication (Premix or Autolube), Gearbox oil typically 20W40/10W30Engine Oil Grade2 Stroke Engine Oil (Separate oil tank for Autolube)
Electric start, Kick startStarting SystemKick Start
YesEngine Kill SwitchNo
0.12 bhp/kgPower-to-Weight RatioNot Available (Old Model)
Euro 1/Pre-Emission StandardEmission Standard35−40 km/L (User Reported)
12V, 2.5 Ah (Capacity Varies)Battery Power105−110 km/h (Factory/Tuned)
—Peak Power11.0 HP (11.0 PS) @ 7500 rpm
—Power Consumption1.3 Litres (Gearbox/Transmission Oil)
—Motor Power10.5 Litres (including reserve)
—Power Mode IndicatorN/A (Known for fast acceleration in its class)