The Yamaha YTM125 was produced from 1979 to 1985

Engine & Drivetrain
- Engine Type: 123cc, air-cooled, 2-stroke, single-cylinder
- Max Power Output: 5.9 kW (8.0 PS) @ 6,000 RPM
- Ignition: Capacitor Discharge Ignition (CDI)
- Fuel/Oil System: “Autolube” separate oil injection system (no need to pre-mix gas and oil)
- Intake: High-mounted, snorkel-type air intake (designed to prevent water and mud entry)
- Transmission: 5-speed semi-automatic (foot shift, automatic centrifugal clutch)
- Final Drive: Chain drive (fully enclosed chain case for rock/mud protection)
Chassis & Dimensions
- Weight: 119 kg (approx. 243–262 lbs dry weight depending on model year)
- Frame: Tubular steel construction
- Front Suspension: Rigid (no front suspension forks; relied entirely on low-pressure balloon tyres for shock absorption)
- Rear Suspension: Rigid axle
- Tyres: Wide, low-pressure balloon tyres (front and rear)
Brakes & Features
- Rear Brake: Enclosed mechanical disc brake with long-wearing pads
- Starting System: Recoil pull-start
- Lighting: Built-in front trail headlight and small rear taillight
- Top Speed: Under 30 mph (approx. 48 km/h)
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