Yamaha WR 250Z (1997) vs Yamaha DT 125 (1977)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | WR 250Z | DT 125 |
| Years: | 1997 | 1977 |
| Engine: | Two stroke, single cylinder | Two stroke, single cylinder, reed-valve |
| Capacity: | 249 cc / 15.2 cu-in | 123 cc / 7.5 cu-in |
| Bore x Stroke: | 68 x 68.8 mm | 56 х 50 mm |
| Cooling System: | Liquid cooled | Air cooled |
| Compression Ratio: | 10.9:1 | 7.2:1 |
| Lubrication: | Premix | Autolube |
| Induction: | Mikuni VM38SS carburetor | Single 24 mm Mikuni carburettor |
| Ignition: | CDI | Magneto |
| Starting: | Kick | Kick |
| Max Power: | 49.8 hp / 37.2 kW @ 8250 rpm | 13 hp / 9.5 kW @ 7000 rpm |
| Max Torque: | 4.69 kgf-m / 44.5 Nm @ 7500 rpm | 9.8 lb-ft @ 6,500 rpm |
| 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 | Drum |
| Rear Brakes: | Single 189mm disc | Drum |
| Front Tyre: | 80/100-21 | 2.75-21 |
| Rear Tyre: | 110/100-18 | 3.50-18 |
| Wheelbase: | 1480 mm / 58.2 in | 1404 mm / 53.1 in |
| Seat Height: | 978 mm / 38.5 in | 810 mm / 31.8 in |
| Ground Clearance: | 398 mm / 15.6 in | 265 mm / 10.4 in |
| Dry Weight: | 103 kg / 227 lbs | 96 kg / 212 lbs |
| Fuel Capacity: | 13 Litres / 3.4 US gal | 6.8 Litres / 1.8 gal |