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Yamaha IT 175

Make Model	Yamaha IT 175
Year	1980
Engine	Two stroke, single cylinder, reed-valve inducted
Capacity	171 cc / 10.4 cu-in
Bore x Stroke	66 x 50mm
Cooling System	Air cooled
Compression Ratio	7.9:1
Induction	32mm Mikuni carburetor
Ignition	CDI
Starting	Kick
Max Power	19.86 hp / 14.6 kW @ 8000 rpm
Max Torque	18.47 Nm / 13.63 lb-ft @ 7500 rpm
Clutch	Wet, multi-disc
Transmission	6 Speed
Final Drive	Chain
Frame	Single-downtube, full cradle, chromoly frame, box section aluminum swingarm
Front Suspension	Telescopic forks
Front Wheel Travel	244 mm / 9.6 in
Rear Suspension	Monoshock with adjustable damping and pre-load
Rear Wheel Travel	241 mm / 9.4 in
Front Brakes	Drum
Rear Brakes	Drum
Front Tyre	3.00 x 21
Rear Tyre	4.10 x 18
Wheelbase	1417 mm / 55.8 in
Seat Height	899 mm / 35.4 in
Ground Clearance	290 mm / 11.4 in
Wet Weight	104.1 kg / 229.5 lbs
Fuel Capacity	11 Litres / 2.9 US gal

Yamaha IT175 belongs to the 'International Trial' family of motorcycles, produced during the 1970s and 1980s. The machine is derived from the Yamaha YZ range of competition motocross bikes with modifications for use in competition enduro, hare and hounds and trail riding.

The bike uses an air-cooled, two-stroke, single-cylinder engine with pre-mixed fuel. It is kick start only.

There are three derivations of the machine for the global market. A U.S. and Canada market version, a European version and an Oceanic version for other World markets.

The IT bikes were designed and sold as enduros and can still be plated and registered today, provided you make the necessary modifications to the tail light. Another option is to get a historical plate and use the old brake signal along with your other hand signals for turning.

Other bikes in the IT range include IT125, IT200, IT250, IT425, IT465 and IT490.

The IT range was superseded by the WR (Wide Ratio) in 1991 with the introduction of the WR200, and the WR250 in 1993.

The Environmental Protection Agency (EPA) invoked new regulations restricting Two Strokes in the early 2000s and new rules were set by the American Motorcycle Association (AMA) which set the path for the development of the less powerful four-stroke engines dominate in the sport today.