| MODEL | YAMAHA IT 250 1980 |
| Year | 1980 |
| Engine Type | Two stroke, single cylinder, reed valve |
| Displacement / Capacity | 246 cc / 15.07 cu in |
| Bore X Stroke | 70 x 64 mm |
| Compression Ratio | 7.9:1 |
| Cooling System | Air cooled |
| Max Power | 23.6 kW / 32.2 hp @ 7500 rpm |
| Max Torque | 35 Nm / 26 lb-ft @ 7500 rpm |
| Ignition | CDI |
| Induction | 36 mm Mikuni carburettor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 Speed |
| Clutch | Wet, multi-plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Single downtube, full cradle chrome-moly frame with aluminium box-section swing arm |
| Front Suspension | Telescopic forks, 270 mm / 10.6 in travel |
| Rear Suspension | Swing arm with monoshock, 270 mm / 10.6 in travel |
| Front Brakes | Drum, 130 x 22 mm shoes |
| Rear Brakes | Drum, 150 x 25 mm shoes |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | 1430 mm / 56.3 in |
| Ground Clearance | — |
| Dry Weight | 109 kg / 240 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.00 x 21 |
| Rear Tyre | 5.10 x 18 |
| FUEL SYSTEM | |
| Fuel Capacity | 12 Litres / 3.2 US gal |
| Fuel Consumption | — |
| Top Speed | — |
For 1980 the IT 250 gained a lighter chrome-moly single-downtube frame with an aluminium swingarm and considerably more power than the 1978 model. It had long-travel suspension and an upswept expansion chamber with a spark arrester for US forest-service use.
