Categories: Yamaha

Yamaha RD125LC (1985-86)

The Yamaha RD125LC YPVS is a two-stroke, single cylinder motorcycle with a capacity of 123cc. It has a liquid-cooled engine and a compression ratio of 6.4:1 with autolube lubrication. The bike has a 24mm Mikuni carburetor for induction and Hitachi CDI ignition with kick starting. It is capable of producing 20 horsepower and 16 Nm of torque, with a 6-speed transmission and a chain final drive. The front suspension is 32mm telescopic forks, and the rear suspension is a Monocross linkage with 6-way preload adjustment. The bike has a single 245mm disc front brake and a 130mm rear drum brake, with 2.75-18-4PR front and 3.00-18-6PR rear tires. Its dimensions are 1990mm length, 735mm width, and 1190mm height with a wheelbase of 1295mm, seat height of 775mm, ground clearance of 185mm, and dry weight of 98kg. The fuel capacity of the tank is 13 liters, and it has an average fuel consumption of 64 mpg. The Yamaha RD125LC YPVS can reach a top speed of 81mph and complete the standing 1/4 mile in 16.7 seconds.


Technical specifications:

Make Model: Yamaha RD 125LC YPVS

Year: 1985 – 86

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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