Yamaha WR 250Z (1989-91) vs Yamaha DT 175 (1979)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | WR 250Z | DT 175 |
| Years: | 1989-91 | 1979 |
| Engine: | Two stroke, single cylinder | Two stroke, single cylinder, reed valve |
| Capacity: | 249 cc / 15.2 cu-in | 171 cc / 10.43 cu-in |
| Bore x Stroke: | 68 x 68.8 mm | 66 x 50 mm |
| Cooling System: | Liquid cooled | Air cooled |
| Compression Ratio: | 10.9:1 | 6.8;1 |
| Induction: | Mikuni VM38SS carburetor | Mikuni VM24SS 24mm slide type carburettor |
| Ignition: | CDI | CDI, magneto type |
| Starting: | Kick | Kick |
| Max Power: | 49.8 hp / 37.2 kW @ 8250 rpm | 16.5 hp / 12.3 kW @ 7000 rpm |
| Max Torque: | 4.69 kgf-m / 44.5 Nm @ 7500 rpm | 8.8 Nm / 12 lb- ft @ 6000rpm. |
| Clutch: | Multi-plate wet clutch | Wet, multiplate type. |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | Chain | Chain, DID428SM. 117 links. |
| Frame: | CrMo steel | Welded, tubular, double cradle with single downtube. |
| Front Suspension: | 43mm inverted fork | Telescopic, oil damped. |
| Rear Suspension: | Monocross, swinging arm | Dual shocks |
| 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 | 1350 mm / 53.1in. |
| Seat Height: | 978 mm / 38.5 in | 845 mm / 33.27 in |
| Ground Clearance: | 398 mm / 15.6 in | 265 mm / 10.4 in |
| Dry Weight: | 103 kg / 227 lbs | 99 kg / 2181 lbs |
| Fuel Capacity: | 13 Litres / 3.4 US gal | 7 Litres / 1.5gal |