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Yamaha WR 250Z

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Model

Yamaha WR 250Z

Year

1989 - 91

Engine

Two stroke, single cylinder

Capacity

249 cc / 15.2 cu-in
Bore x Stroke 68 x 68.8 mm 
Cooling System Liquid cooled
Compression Ratio 10.9:1
Lubrication Premix

Induction

Mikuni VM38SS carburetor

Ignition 

CDI
Starting Kick

Max Power

49.8 hp / 37.2 kW @ 8250 rpm

Max Torque

4.69 kgf-m / 44.5 Nm @ 7500 rpm 
Clutch Multi-plate wet clutch

Transmission

5 Speed 
Final Drive Chain
Frame CrMo steel

Front Suspension

43mm inverted fork
Front Wheel Travel 300 mm / 11.8 in

Rear Suspension

Monocross, swinging arm
Rear Wheel Travel 315 mm / 12.4 in

Front Brakes

Single 204mm disc

Rear Brakes

Single 189mm disc

Front Tyre

80/100-21 

Rear Tyre

110/100-18
Wheelbase 1480 mm /  58.2 in
Seat Height 978 mm /  38.5 in
Ground Clearance 398 mm / 15.6 in

Dry Weight

103 kg / 227 lbs

Fuel Capacity 

13 Litres / 3.4 US gal