| MODEL | YAMAHA DT 125LC 1984 |
| Year | 1984 |
| Engine Type | Two stroke, single cylinder, reed-valve |
| Displacement / Capacity | 123 cc / 7.5 cu in |
| Bore X Stroke | 56 x 50 mm |
| Compression Ratio | 6.8:1 |
| Cooling System | Liquid cooled |
| Max Power | 10.3 kW / 14 hp @ 6500 rpm |
| Max Torque | 15.2 Nm / 1.5 kgf-m @ 6500 rpm |
| Ignition | CDI |
| Induction | Single 24 mm Mikuni VM26SS carburettor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | Autolube (1.2 Litres oil capacity) |
| Gear Box | 6 speed |
| Clutch | Wet multiplate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Telescopic forks |
| Rear Suspension | Monocross |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | 2140 mm / 84.3 in |
| Overall Width | 820 mm / 32.3 in |
| Overall Height | 1170 mm / 46.1 in |
| Seat Height | 845 mm / 33.3 in |
| Wheelbase | 1360 mm / 53.5 in |
| Ground Clearance | 285 mm / 11.2 in |
| Dry Weight | 99 kg / 218 lbs |
| Wet Weight | 108.0 kg / 238.1 lbs |
| WHEEL SPECS | |
| Front Tyre | 2.75-21 |
| Rear Tyre | 4.10-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 10 Litres / 2.6 US gal |
| Fuel Consumption | 79 mpg |
| Top Speed | 74 mph / 119 km/h |
The 1984 DT125LC kept the liquid-cooled two-stroke and Monocross rear end essentially unchanged on the source page. It remained a drum-braked learner-friendly trail bike with a six-speed gearbox.
