Yamaha ST 125 Specs
The Yamaha ST 125 model is a Sport bike manufactured by Yamaha . In this version sold from year 1998 , the dry weight is 110.0 kg (242.5 pounds) and it is equiped with a Single cylinder, two-stroke motor. The engine produces a maximum peak output power of 36.00 HP (26.3 kW) and a maximum torque of . With this drive-train, the Yamaha ST 125 is capable of reaching a maximum top speed of 160.0 km/h (99.4 mph) . Regarding the chassis characteristics, responsible for road holding, handling behaviour and ride confort, the Yamaha ST 125 have a steel deltabox frame with front suspension being rwu forks and in the rear suspension it is equiped with monoshock . Stock tire sizes are on the front, and on the rear. As for stopping power, the Yamaha ST 125 braking system includes Single disc. twin piston caliper size at the front and Single disc. twin piston caliper size at the rear.
Yamaha ST 125 General Information
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| Brand |
Yamaha |
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| Model |
Yamaha ST 125 |
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| Year |
1998 |
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| Year |
1998 |
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| Category |
Sport |
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| Factory Warranty (Years / miles) |
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Yamaha ST 125 Dimensions, Aerodynamics and weight
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| Frame type |
steel deltabox |
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| Seat details |
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| Wheelbase |
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| Length |
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| Width |
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| Height |
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| Seat Height |
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| Alternate Seat Height |
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| Ground Clearance |
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| Trail size |
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| Wheels details |
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| Front Tyres - Rims dimensions |
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| Rear Tyres - Rims dimensions |
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| Front brakes |
Single disc. twin piston caliper |
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| Rear brakes |
Single disc. twin piston caliper |
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| Front Brakes Dimensions - Disc Dimensions |
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| Rear Brakes Dimensions - Disc Dimensions |
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| Curb Weight (including fluids) |
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| Dry Weight |
110.0 kg (242.5 pounds) |
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| Front Percentage of Weight |
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| Rear Percentage of Weight |
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| Weight-Power Output Ratio : |
0.3273 HP/kg |
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| Fuel Tank Capacity |
10.00 litres (2.64 gallons) |
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| Reserve Fuel Capacity |
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| Carrying Details and Capacity |
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| Front Suspension |
rwu forks |
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| Front Suspension Travel |
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| Rear Suspension |
monoshock |
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| Rear Suspension Travel |
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Yamaha ST 125 Engine and Transmission Technical Data
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| Engine type - Number of cylinders |
Single cylinder, two-stroke |
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| Engine details |
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| Fuel system |
Carburettor. mikuni |
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| Engine size - Displacement - Engine capacity |
125.00 ccm (7.63 cubic inches) |
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| Bore x Stroke |
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| Compression Ratio |
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| Number of valves per cylinder |
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| Camshaft Valvetrain Configuration |
Port control |
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| Maximum power - Output - Horsepower |
36.00 HP (26.3 kW) |
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| Maximum torque |
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| Engine Maximum RPM |
11000 |
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| Cooling system |
Liquid |
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| Lubrication system |
oil injection |
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| Engine oil capacity |
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| Exhaust system |
single expansion chamber and muffler |
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| Gearbox |
6-speed |
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| Transmission type, final drive ratio |
Chain |
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| Clutch type |
wet plate |
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| Driveline |
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Yamaha ST 125 Performance
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| Top Speed |
160.0 km/h (99.4 mph) |
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| Acceleration 0 to 100 km/h (0 to 62 mph) |
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| Acceleration 0 to 400m (1/4 mile) |
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| Recuperation 60 to 140 km/h in highest gear |
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| Fuel Consumption - MPG - Economy - Efficiency |
8.00 litres/100 km (12.5 km/l or 29.40 mpg) |
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| CO2 emissions |
185.6 CO2 g/km. (CO2 - Carbon dioxide emission) |
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| Emissions |
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Yamaha ST 125 Electrical Systems, Ignition and Equipment
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| Ignition Type |
electronic |
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| Electrical Details |
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| Starter Type |
Kick |
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| Instruments |
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| Lights |
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