Manufacturer | Yamaha |
---|---|
Production | 1973–2004 |
Class | Grand Prix motorcycle racing |
Engine | 247–249 cc (15.1–15.2 cu in), 2-cylinder, 2-stroke |
Bore / stroke | 56 mm × 50.7 mm (2.20 in × 2.00 in) |
Top speed | over 240 km/h (150 mph) |
Power | 51 bhp (38 kW) @ 10,500 rpm to 76 bhp (57 kW) @ 11,750 rpm |
Torque | 47.1 N⋅m (34.7 lb⋅ft) @ 11,500 rpm |
Transmission | 6-speed |
Brakes | Front: Dual 280 mm (11 in) discs Rear: Single 210 mm (8.3 in) disc |
Tires | Front: 3.25/4.75 R17 Rear: 3.80/6.00 R17 |
Wheelbase | 1,312–1,328 mm (51.7–52.3 in) |
Dimensions | L: 1,920 mm (76 in) W: 650 mm (26 in) H: 1,085 mm (42.7 in) |
Weight | 98–108 kg (216–238 lb) (dry) |
Fuel capacity | 23.5 L (5.2 imp gal; 6.2 US gal) |
The Yamaha TZ 250 was a commercially available racing motorcycle with a watercooled, two-stroke, 250 cc engine produced by the Japanese manufacturer Yamaha.
The basis of the production-volume racer was the OW17 factory machine from Yamaha, which was used in the motorcycle world championship from 1973 to 1990, and with which Dieter Braun became motorcycle world champion in the class up to 250 cm³ in 1973. The almost identical Yamaha TZ 350 was manufactured with a larger bore (64 instead of 54 mm).[2][3][4][5][6][7]