Yamaha WR 250Z (1998) vs Yamaha RD 250LC / RZ 250LC (1981)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | WR 250Z | RD 250LC / RZ 250LC |
| Years: | 1998 | 1981 |
| Engine: | Two stroke, single cylinder | Two stroke, parallel twin |
| Capacity: | 249 cc / 15.2 cu-in | 247 cc / 15.0 cu-in |
| Bore x Stroke: | 68 x 68.8 mm | 54 х 54 mm |
| Cooling System: | Liquid cooled | Liquid cooled |
| Compression Ratio: | 10.9:1 | 6.2 :1 |
| Lubrication: | Premix | Autolube |
| Induction: | Mikuni VM38SS carburetor | 2x Mikuni VM28 SC carburetor |
| Ignition: | CDI | CDI |
| Starting: | Kick | Kick |
| Max Power: | 49.8 hp / 37.2 kW @ 8250 rpm | 35.5 hp / 26.1 kW @ 8500 rpm　 |
| Max Torque: | 4.69 kgf-m / 44.5 Nm @ 7500 rpm | 30.2 Nm / 3.1 kgf-m@ 8000 rpm |
| Clutch: | Multi-plate wet clutch | Wet multi-plate |
| Transmission: | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | 43mm inverted fork | Telescopic forks |
| Rear Suspension: | Monocross, swinging arm | Monocross |
| Front Brakes: | Single 204mm disc | Single 267mm disc |
| Rear Brakes: | Single 189mm disc | Drum |
| Front Tyre: | 80/100-21 | 3.00-18 |
| Rear Tyre: | 110/100-18 | 3.50-18 |
| Wheelbase: | 1480 mm / 58.2 in | 1360 mm / 53.5 in |
| Seat Height: | 978 mm / 38.5 in | 785 mm / 30.9 in |
| Ground Clearance: | 398 mm / 15.6 in | 165 mm / 6.4 in |
| Dry Weight: | 103 kg / 227 lbs | 139 kg / 306.4 lbs |
| Fuel Capacity: | 13 Litres / 3.4 US gal | 16.5 Litres / 4.3 US gal |