Yamaha RD125LC (1983-84)

The Yamaha RD125LC YPVS was a two-stroke, single cylinder motorcycle produced from 1983 to 1984. It had a liquid-cooled, 123cc engine with a compression ratio of 6.4:1 and an autolube oil capacity of 1.1L. The bike had a 24mm Mikuni carburetor and Hitachi CDI ignition, and it was capable of producing a maximum power of 20hp at 9500rpm and a maximum torque of 1.6kgf-m at 9250rpm. The bike was equipped with a 6-speed transmission, chain final drive, and front suspension with 32mm telescopic forks. The rear suspension was a monocross linkage with 6-way preload adjustment. It had a single 245mm disc front brake and a 130mm drum rear brake. The bike’s dimensions were 1990mm in length, 735mm in width, and 1190mm in height. The wheelbase measured 1295mm and the seat height was 775mm. The dry weight of the bike was 98kg and it had a fuel capacity of 13 litres, with an average consumption of 64mpg. The standing 1/4 mile time was 16.7 seconds and the top speed was 81mph.

Technical specifications:

Make Model: Yamaha RD 125LC YPVS

Year: 1983 – 84
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