|Also called||IT250E, IT 250 E, IT 250|
|Production||1978 - 1982|
|Engine||250cc single cylinder, two-stroke|
|Bore / Stroke||71.1mm x 71.1mm|
|Top speed||68 mph (110 km/h)|
|Horse Power||10.06 HP (7.5 KW) @ 5500RPM|
|Torque||10.33 ft/lbs (14.0 Nm) @ 5500RPM|
|Sparkplug||NGK B9EV '77 , '78 , '79 , '80 , '83|
NGK B9EGV '81-82
|Transmission||Gear box: 6-speed |
Final Drive: chain
|Suspension||Front: conventional forks |
Rear: mono-x triangular swingarm
|Brakes||Front: expanding brake (drum brake). cable |
Rear: expanding brake (drum brake). mechanical link
|Front Tire||3.00-21 '77 , '78 , '79 , '80 , '81-82 , '83|
|Rear Tire||140/80-18 '83|
6705 '80 , '81-82
4.50-18 '77 , '78 , '79
|Wheelbase||57.09 inches (1450 mm)|
|Dimensions||L 86.81 inches (2205 mm)|
W 35.0 inches (889 mm)
|Seat height||36.42 inches (925 mm)|
|Weight||246.04 pounds (111.6 Kg) (dry), 95.3 kg (wet)|
|Fuel capacity||3.2 Gallon (12.11 Liters)|
|Fuel consumption||3.92 litres/100 km (25.5 km/l or 60.01 mpg)|
|Related||Yamaha IT125, Yamaha IT175, Yamaha IT200, Yamaha IT250, Yamaha IT350, Yamaha IT490, Yamaha IT500, Yamaha TT250|
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The Yamaha IT250 was a is a 175cc, single cylinder, two stroke, reed valve, motocross motorcycle manufactured by Yamaha between 1978 and 1982. It could reach a top speed of 68 mph (110 km/h). Max torque was 10.33 ft/lbs (14.0 Nm) @ 5500 RPM. Claimed horsepower was 10.06 HP (7.5 KW) @ 5500 RPM.
It has a six speed gearbox, suspension is 32mm front forks, with monoshock and aluminium swingarm at the rear. The IT was made for enduro use, although it was used with success for trail riding and motocross.
The bike has a 6-speed transmission. Power was moderated via the wet plate.
It came with a -21 front tire and a -18 rear tire. Stopping was achieved via expanding brake (drum brake). cable in the front and a expanding brake (drum brake). mechanical link in the rear. The front suspension was a conventional forks while the rear was equipped with a mono-x triangular swingarm. The IT250 was fitted with a 3.2 Gallon (12.11 Liters) fuel tank. The bike weighed just 246.04 pounds (111.6 Kg). The wheelbase was 57.09 inches (1450 mm) long.
1980 - 1983 Yamaha IT 250
Based on the all-conquering YZ motocrossers, the IT 250 uses such high-tech innovations as YEIS, capacitor discharge ignition, a chrome-moly double-cradle frame and Yamaha`s exclusive Monoshock suspension.
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