Yamaha RD125LC (1981-82)

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The Yamaha RD125LC is a two-stroke, single-cylinder motorcycle with a capacity of 123 cc and a compression ratio of 6.4:1. It has a maximum power output of 20 hp at 9500 rpm and a maximum torque of 1.6 kgf-m at 9250 rpm. The bike features a six-speed transmission, chain final drive, and front and rear suspension consisting of 32mm telescopic forks and a monocross linkage with 6-way preload adjustment. The front brakes are a single 245mm disc, while the rear brakes are a 130mm drum. The motorcycle measures at a length of 1990 mm, width of 735 mm, and height of 1190 mm with a dry weight of 98 kg. It has a fuel capacity of 13 litres and a consumption average of 64 mpg. The standing 1/4 mile time is 16.7 seconds, and the top speed is 81 mph. The bike was produced from 1981-82.

Technical specifications:

Make Model: Yamaha RD / RZ 125LC

Year: 1981 – 82


Engine: Two stroke, single cylinder
Capacity: 123 cc / 7.5 cu-in
Bore x Stroke: 56 50 mm
Cooling System: Liquid cooled
Compression Ratio: 6.4:1
Lubrication: Autolube
Oil Capacity: 1.1 L
Induction: 24mm Mikuni carburetors
Ignition: Hitachi CDI
Starting: Kick
Max Power: 20 hp / 15.5 kW @ 9500 rpm
Max Torque: 1.6 kgf-m / 16 Nm @ 9250 rpm
Transmission: 6 Speed
Final Drive: Chain
Front Suspension: 32mm Telescopic forks

Rear Suspension: Monocross linkage 6-way preload adjustment
Front Brakes: Single 245mm disc
Rear Brakes: 130mm Drum
Front Tyre: 2.75-18-4PR
Rear Tyre: 3.00-18-6PR
Dimensions: Length 1990 mm / 78.3 in Width 735 mm / 28.9 in Height 1190 mm / 46.8 in
Wheelbase: 1295 mm / 50.9 in
Seat Height: 775 mm / 30.5 in
Ground Clearance: 185 mm / 7.2 in
Dry Weight: 98 kg / 216 lbs
Fuel Capacity: 13 Litres / 3.4 US gal
Consumption Average: 64 mpg
Standing 1/4 Mile: 16.7 sec
Top Speed: 81 mph / 130.3 km/h

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