Yamaha DT125R (1990-91)

The Yamaha DT125R is a two-stroke, single-cylinder motorcycle with a 123 cc engine and a 6-speed transmission. It has a compression ratio of 6.8:1 and uses an Autolube system for lubrication. The bike is equipped with a VM24 carburetor, CDI ignition, and kick starting. It produces a maximum power of 14 hp at 6500 rpm and a torque of 1.5 kgf-m at the same rpm. The clutch is a wet multiplate type and the final drive is through a chain. The front suspension consists of telescopic forks and the rear has a Monocross system. The front and rear brakes are single discs with diameters of 230mm and 220mm respectively. The front and rear tires have sizes of 2.75-21 and 4.10-18 respectively. The dimensions of the motorcycle are 2135 mm (length) x 820 mm (width) x 1255 mm (height) with a wheelbase of 1360 mm. The seat height is 840 mm and the ground clearance is 270 mm. The wet weight of the bike is 119.0 kg and it has a fuel capacity of 10 litres. The average fuel consumption is 20 km/lit. The braking distances from 60 – 0 km/h and 100 – 0 km/h are 16.0 meters and 43.7 meters respectively. The standing quarter-mile time of the motorcycle is 16.9 seconds with a speed of 115.9 km/h. The top speed of the Yamaha DT125R is 124.6 km/h.

Technical specifications:

Make Model: Yamaha DT 125R

Year: 1990-91
Engine: Two stroke, single cylinder, reed-valve
Capacity: 123 cc / 7.5 cu-in
Bore x Stroke: 56 X 50 mm
Compression Ratio: 6.8:1
Lubrication: Autolube
Oil Capacity: 1.2 Litres
Induction: VM24 carburetor
Ignition: CDI
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
Rear Suspension: Monocross
Front Brakes: Single 230mm disc
Rear Brakes: Single 220mm disc
Front Tyre: 2.75-21
Rear Tyre: 4.10-18
Dimensions: Length 2135 mm / 81.0 in Width 820 mm / 32.2 in Height 1255 mm / 49.4 in
Wheelbase: 1360 mm / 53.5 in
Seat Height: 840 mm / 33.0 in
Ground Clearance: 270 mm / 10.6 in
Wet Weight: 119.0 kg / 262.4 lbs
Fuel Capacity: 10 Litres / 2.2 gal
Consumption Average: 20 km/lit
Braking 60 – 0 / 100 – 0: 16.0 m / 43.7 m
Standing 1/4 Mile: 16.9 sec / 115.9 km/h
Top Speed: 124.6 km/h