Rato RBX250 (RW170MM)

Rato RBX250 (RW170MM)The Rato RBX250 (RW170MM) is a 250.1 cc (15.3 cu-in) single-cylinder water-cooled 4-stroke internal combustion vertical motorcycle engine, manufactured by Chongqing RATO Holding (Group) CO., LTD.

The Rato ATW250 has four valves, this structure generating the high air-charging efficiency, more rapid and full burning and stronger power. Overhead double cam direct-driven air valve with the precise transmission, sound rigidity, low movement inertia, few abrasion and high reliability of valve gear. The engine uses a water-cooling system with the large flow to maintain the engine to work under the appropriate temperature and extend the engine’s lifetime. The engine is equipped with capacitance discharge ignition system (CDI), electric starter and 6-speed gearbox.

The engine cylinder bore is 70.0 mm (2.75 in) and piston stroke is 65.0 mm (2.55 in). The RBX250 (RW170MM) produced 25.8 PS (19.0 kW; 25.5 HP) at 8,000 rpm of maximum horsepower and 23.0 N·m (2.34 kg·m, 16.9 ft·lb) at 7,000 rpm of torque.

General information

Engine Specifications
ModelRBX250 (RW170MM)
TypeVertical, four-stroke, single cylinder
Displacement250.1 ml (15.3 cu-in)
Max. horsepower25.8 PS (19.0 kW; 25.5 HP) at 8,000 rpm
Max. torque (crank PTO)23.0 N·m (2.34 kg·m, 16.9 ft·lb) at 7,000 rpm
ClutchManual wet multi-plate
Gearshift method6-International
Cooling systemForced-air
Ignition systemCapacitance discharge ignition (CDI)
Lubricating systemSplash
Starting systemElectric
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel consumption354 g/kw·h

Dimensions and Weight

Rato RBX250 (RW170MM)
Length, mm (in)335 (13.2)
Width, mm (in)350 (13.8)
Height, mm (in)460 (18.1)
Dry weight, kg (lb)34.0 (74.9)

Service Information

Oil system
Oil capacity1.3 L
Ignition system
Spark plugCR8E
ATTENTION! Dear visitors, this site is not a trading platform, an official dealer or a spare parts supplier, so we do not have any price lists or spare parts catalogs. We are an information portal and provide the technical specifications of gasoline and diesel engines.

We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

Be the first to comment

Leave a Reply

Your email address will not be published.


*