The Yamaha DT 125E, produced from 1978-79, is a two-stroke, single cylinder, reed-valve engine with a capacity of 123cc. It has a compression ratio of 7.1:1 and uses Autolube for its lubrication, with an oil capacity of 1.2 litres. The induction system consists of a single 24mm Mikuni carburetor and the ignition is powered by a 12V, 7AH battery with a flywheel magneto charging system. Starting options include both electric and kick. The motorcycle can generate a maximum power of 13 hp and maximum torque of 1.4 kgf-m. The clutch is wet multiplate, and it has a six-speed transmission with a chain final drive. The front suspension is a telescopic fork with 160mm wheel travel, while the rear suspension is a monocross system with 115mm wheel travel. The brakes are drum, and it has front and rear tires of 2.75-21 and 3.25-18 respectively. It measures 2030mm in length, 860mm in width, and 1090mm in height, with a wheelbase of 1325mm and ground clearance of 250mm. The dry weight is 104.5kg, and it has a fuel capacity of 7.0 litres.
Technical specifications:
Make Model: Yamaha DT 125E
| Year | 1978-79 |
|---|---|
| Engine | Two stroke, single cylinder, reed-valve |
| Capacity | 123 cc / 7.5 cu-in |
| Bore x Stroke | 56 50 mm |
| Cooling System | Air cooled |
| Compression Ratio | 7.1:1 |
| Lubrication | Autolube |
| Oil Capacity | 1.2 Litres / 1.76 qts |
| Induction | Single 24 mm Mikuni |
| Ignition | Battery, CB/Coil |
| Battery | 12 V, 7 AH |
| Charging | Flywheel magneto |
| Starting | Electric & kick |
| Max Power | 13 hp / 9.5 kW @ 7000 rpm |
| Max Torque | 1.4 kgf-m / 13.9 Nm @ 6500 rpm |
| Clutch | Wet multiplate |
| Transmission | 6 Speed |
| Final Drive | Chain |
| Front Suspension | Telescopic forks |
| Front Wheel Travel | 160 mm / 6.2 in |
| Rear Suspension | Monocross |
| Rear Wheel Travel | 115 mm / 4.5 in |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| Front Tyre | 2.75-21 |
| Rear Tyre | 3.25-18 |
| Dimensions | Length 2030 mm / 79.8 in Width 860 mm / 33.8 in Height 1090 mm / 42.9 in |
| Wheelbase | 1325 mm / 52.2 in |
| Ground Clearance | 250 mm / 9.8 in |
| Seat Height | 820 mm / 32.2 in |
| Dry Weight | 104.5 kg / 230.3 in |
| Fuel Capacity | 7.0 Litres / 1.58 gal |
