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Yamaha RZ 250

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Model

Yamaha RD 250LC / RZ 250LC

Year

1980 - 81

Engine

Two stroke, torque induction, parallel twin

Capacity

247 cc / 15.0 cu-in
Bore x Stroke 54 х 54 mm
Cooling System Liquid cooled
Compression Ratio 6.2 :1
Lubrication Autolube
Oil Capacity 1.6 Litres

Induction

2x  Mikuni VM28 SC carburetor

Ignition 

CDI
Starting Kick

Max Power

35.5 hp / 26.1 kW @ 8500 rpm 

Max Torque

30.2 Nm / 3.1 kgf-m@ 8000 rpm
Clutch Wet multi-plate

Transmission

6 Speed 
Final Drive Chain

Front Suspension

Telescopic forks

Rear Suspension

Monocross

Front Brakes

Single 267mm disc

Rear Brakes

Drum

Front Tyre

3.00-18

Rear Tyre

3.50-18
Dimensions Length 2080 mm / 81.8 in
Width    750 mm / 29.5 in
Height 1090 mm / 42.9 in
Wheelbase 1360 mm / 53.5 in
Seat Height 785 mm / 30.9 in
Ground Clearance 165 mm /  6.4 in

Dry Weight

139 kg / 306.4 lbs

Fuel Capacity 

16.5 Litres /  4.3 US gal

Consumption Average

40 mpg

Standing ¼ Mile  

14.6 sec
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This was a supersport model developed with the TZ250 as its base. It immediately created a big sensation after its stunning debut at the 1979 Tokyo Motor Show. Its liquid-cooled 2-stroke, 2-cylinder engine pumped out high power equivalent to 140 hp per liter of displacement. This was mounted on a double cradle frame with a Monocross suspension and other features like lightweight cast wheels to produce unprecedented running performance. Even today it remains a legendary model with a devoted following.