| MODEL | YAMAHA IT 175 1977 |
| Year | 1977 |
| Engine Type | Two-stroke, single cylinder, reed-valve induction |
| Displacement / Capacity | 171 cc / 10.4 cu in |
| Bore X Stroke | 66 x 50 mm |
| Compression Ratio | 7.4:1 |
| Cooling System | Air cooled |
| Max Power | 15.8 kW / 21.55 hp @ 9500 rpm |
| Max Torque | 17 Nm / 12.52 lb-ft @ 8000 rpm |
| Ignition | CDI |
| Induction | 34 mm Mikuni carburetor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 Speed |
| Clutch | Wet, multi-disc |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Telescopic forks |
| Rear Suspension | Monoshock |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 876 mm / 34.5 in |
| Wheelbase | 1410 mm / 55.5 in |
| Ground Clearance | 254 mm / 10 in |
| Dry Weight | — |
| Wet Weight | 108 kg / 237 lbs |
| WHEEL SPECS | |
| Front Tyre | 3.00 x 21 |
| Rear Tyre | 4.10 x 18 |
| FUEL SYSTEM | |
| Fuel Capacity | 9.5 Litres / 2.5 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The first-year IT 175 was one of Yamaha's 1977 International Trial off-roaders, sharing magnesium engine cases and light wheels with the YZ motocross bikes. A period test praised its brakes, suspension and value, and noted a double-peaked powerband.
