1998 Yamaha ST 125 specifications
Available technical data for this model and year. Specifications can vary by market and version.
Technical specifications
| Displacement | 125.0 ccm (7.63 cubic inches) |
|---|---|
| Engine type | Single cylinder, two-stroke |
| Power | 36.0 HP (26.3 kW )) |
| Fuel system | Carburettor. Mikuni |
| Fuel control | Port control |
| Ignition | electronic |
| Cooling system | Liquid |
| Gearbox | 6-speed |
| Transmission type | Chain (final drive) |
| Clutch | Wet plate |
| Frame type | Steel deltabox |
| Front suspension | Rwu forks |
| Rear suspension | Monoshock |
| Front brakes | Single disc. Twin piston caliper |
| Rear brakes | Single disc. Twin piston caliper |
| Front tyre | 2.00-17 |
| Rear tyre | 2.00-17 |
| Dry weight | 110.0 kg (242.5 pounds) |
| Fuel capacity | 10.00 litres (2.64 US gallons) |
| Top speed | 160.0 km/h (99.4 mph) |
Source: Bikez: ST 125, 1998. Retrieved 2026-09-19. Match confidence: exact.
Years listed are the entries held in this archive, rather than a complete production history.
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