The Rato CB125 (RW162MJ) is a 124.1 ml (7.6 cu-in) single-cylinder air-cooled 4-stroke internal combustion vertical motorcycle engine from Rato CB-series, manufactured by Chongqing RATO Holding (Group) CO., LTD.
The Rato CB125 engine uses the dual-cam valve for valve gear with chain transmission to improve the efficiency of valve gear and reduce the noise of complete machine; increased the diameter of the left crankshaft; capacitance discharge ignition system and electric or kick start. The engine is equipped with a 5-speed gearbox.
The engine cylinder bore is 56.5 mm (2.22 in) and piston stroke is 49.5 mm (1.95 in). The CB125 (RW162MJ) produced 10.2 PS (7.5 kW; 10.0 HP) at 8,500 rpm of maximum horsepower and 8.5 N·m (0.87 kg·m, 6.27 ft·lb) of torque at 7,000 rpm.
|Type||Vertical, four-stroke, single cylinder|
|Displacement||124.1 ml (7.6 cu-in)|
|Max. horsepower||10.2 PS (7.5 kW; 10.0 HP) at 8,500 rpm|
|Max. torque (crank PTO)||8.5 N·m (0.87 kg·m, 6.27 ft·lb) at 7,000 rpm|
|Clutch method||Manual wet multi-plate|
|Gearshift method||5-speed gearshift|
|Ignition system||Capacitance discharge ignition (CDI)|
|Starting system||Electric / kick|
|Fuel used||Unleaded gasoline (octane number 86 or higher)|
|Fuel consumption||354 g/kw·h|
Dimensions and Weight
|Rato CB125 (RW162MJ)|
|Length, mm (in)||355 (14.0)|
|Width, mm (in)||320 (12.6)|
|Height, mm (in)||420 (16.5)|
|Dry weight, kg (lb)||30 (66.1)|
|Oil capacity||1.0 L|