Yamaha DT125 (1982)

The Yamaha DT125MX was a two-stroke, single-cylinder, reed-valve motorcycle with a 123cc capacity and a compression ratio of 7.2:1. It had a max power of 14hp at 6500rpm and a torque of 1.5kgf-m at 6500rpm. The bike had a six-speed transmission and a chain final drive. The suspension featured telescopic forks at the front and a monocross at the rear, with drum brakes both front and back. The bike weighed 96kg and had a fuel capacity of 7 litres, with an average fuel consumption of 79mpg. The standing quarter-mile time was 19.9 seconds and it had a top speed of 74mph. The Yamaha DT125MX was 2080mm long, 885mm wide, and 1120mm high, with a wheelbase of 1325mm and a seat height of 855mm. The ground clearance was 265mm, and the front tyre was 2.75-21, while the rear was 3.50-18.

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Technical specifications:

Make Model: Yamaha DT 125MX

Year: 1982

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: 0.9 Litres

Induction: Single 24 mm Mikuni

Ignition: Flywheel Magneto

Starting: Kick

Max Power: 14 hp / 10.3 kW @ 6500 rpm

Max Torque: 1.5 kgf-m / 15.2 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: 3.50-18

Dimensions: Length 2080 mm / 81.8 in Width 885 mm / 34.8 in Height 1120 mm / 41.0 in

Wheelbase: 1325 mm / 52.2 in

Seat Height: 855 mm / 33.6 in

Ground Clearance: 265 mm / 10.4 in

Dry Weight: 96 kg / 212 lbs

Fuel Capacity: 7 Litres / 1.58 gal

Consumption Average: 79 mpg

Standing 1/4 Mile: 19.9 sec

Top Speed: 74 mph