The Rato 90CC (RW147FMF) is a 85.9 cc (5.24 cu-in) single-cylinder air-cooled 4-stroke internal combustion horizontal motorcycle engine manufactured by Chongqing RATO Holding (Group) CO., LTD.
The Rato 90CC engine is equipped with CDI (capacitance discharge ignition system), automatic centrifugal wet multi-plate clutch, electric starter; single stage gearbox. The engine uses the design of a centrifugal clutch to realize the gearshift only by the accelerator.
Bore and stroke are 47 mm (1.85 in) and 49.5 mm (1.95 in), respectively. The 90CC (RW147FMF) produced 5.4 PS (4.0 kW; 5.4 HP) at 7,500 rpm of maximum horsepower and 5.6 Nm (0.57 kg·m; 4.13 ft·lb) at 5,500 rpm of torque .
Vertical, four-stroke, single cylinder
85.9 cc (5.24 cu-in)
5.4 PS (4.0 KW; 5.4 HP) at 7,500 rpm
Max. torque (crank PTO)
5.6 Nm (0.57 kg·m; 4.13 ft·lb) at 5,500 rpm
Automatic wet multi-plate
Capacitance discharge ignition (CDI)
Unleaded gasoline (octane number 86 or higher)
Dimensions and Weight
Rato 90CC (RW147FMF)
Length, mm (in)
Width, mm (in)
Height, mm (in)
Dry weight, kg (lb)
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