Yamaha DT 125 (1977)

The Yamaha DT 125 was a popular motorcycle in 1977. It had a two stroke, single cylinder, reed-valve engine with a capacity of 123 cc / 7.5 cu-in and a bore x stroke of 56 50 mm. The bike was air cooled with a compression ratio of 7.2:1 and an autolube lubrication system. The induction was a single 24 mm Mikuni carburettor and the ignition was a magneto. The bike had a kick start and a maximum power of 13 hp / 9.5 kW @ 7000 rpm with a maximum torque of 9.8 lb-ft @ 6,500 rpm. It also had a 6 speed transmission and a chain final drive.

The Yamaha DT 125 had telescopic forks for its front suspension and a Monocross rear suspension. It had drum brakes for both the front and rear wheels and its tires measured 2.75-21 in the front and 3.50-18 in the rear. The bike was 2095 mm / 82.5 in in length, 866 mm / 34.1 in in width, and 1120 mm / 44.1 in in height with a wheelbase of 1404 mm / 53.1 in. The seat height was 810 mm / 31.8 in and the ground clearance was 265 mm / 10.4 in. The bike weighed 96 kg / 212 lbs and had a fuel capacity of 6.8 Litres / 1.8 gal.

Technical specifications:

Make Model: Yamaha DT 125

Year: 1977
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: 7.2:1
Lubrication: Autolube
Oil Capacity: 1.2 Litres / 1.76 qts
Induction: Single 24 mm Mikuni carburettor
Ignition: Magneto
Starting: Kick
Max Power: 13 hp / 9.5 kW @ 7000 rpm
Max Torque: 9.8 lb-ft @ 6,500 rpm
Transmission: 6 Speed
Final Drive: Chain
Front Suspension: Telescopic forks
Rear Suspension: Monocross
Front Brakes: Drum
Rear Brakes: Drum
Front Tyre: 2.75-21
Rear Tyre: 3.50-18
Dimensions: Length 2095 mm / 82.5 in Width 866 mm / 34.1 in Height 1120 mm / 44.1 in
Wheelbase: 1404 mm / 53.1 in
Seat Height: 810 mm / 31.8 in
Ground Clearance: 265 mm / 10.4 in
Dry Weight: 96 kg / 212 lbs
Fuel Capacity: 6.8 Litres / 1.8 gal