Yamaha TZ 250

Yamaha TZ 250[1]
Yamaha TZ 250 (1977)
ManufacturerYamaha
Production1973–2004
ClassGrand Prix motorcycle racing
Engine247–249 cc (15.1–15.2 cu in), 2-cylinder, 2-stroke
Bore / stroke56 mm × 50.7 mm (2.20 in × 2.00 in)
Top speedover 240 km/h (150 mph)
Power51 bhp (38 kW) @ 10,500 rpm to 76 bhp (57 kW) @ 11,750 rpm
Torque47.1 N⋅m (34.7 lb⋅ft) @ 11,500 rpm
Transmission6-speed
Brakes
Front: Dual 280 mm (11 in) discs
Rear: Single 210 mm (8.3 in) disc
TiresFront: 3.25/4.75 R17
Rear: 3.80/6.00 R17
Wheelbase1,312–1,328 mm (51.7–52.3 in)
DimensionsL: 1,920 mm (76 in)
W: 650 mm (26 in)
H: 1,085 mm (42.7 in)
Weight98–108 kg (216–238 lb) (dry)
Fuel capacity23.5 L (5.2 imp gal; 6.2 US gal)
1993 version of the TZ250M

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]

  1. ^ "Yamaha TZ250 Specs" (PDF). Retrieved 9 June 2022.
  2. ^ Sports, Dorna. "Yamaha's history from 1955 to 2005 – Part 7 | MotoGP™". www.motogp.com.
  3. ^ "Movistar Yamaha MotoGP |Bikes". Yamahamotogp.com. Retrieved 2022-06-09.
  4. ^ "Purity of Purpose: 1981 Yamaha TZ250H". Rare SportBikes For Sale. January 26, 2015.
  5. ^ "Yamaha Motorcycles Specs, Timeline". www.ultimatespecs.com.
  6. ^ "TZ 250 Tech Info". Rz500.net. Retrieved 2022-06-09.
  7. ^ Basem Wasef, Jay Leno. Legendary Motorcycles - Basem Wasef, Jay Leno - Google Books. ISBN 9781610590648. Retrieved 2022-06-09.