| MODEL | YAMAHA DT 175 1981 |
| Year | 1981 |
| Engine Type | Two stroke, single cylinder, reed valve |
| Displacement / Capacity | 171 cc / 10.43 cu in |
| Bore X Stroke | 66 x 50 mm |
| Compression Ratio | 6.8:1 |
| Cooling System | Air cooled |
| Max Power | 12.3 kW / 16.5 hp @ 7000 rpm |
| Max Torque | 8.8 Nm / 12 lb-ft @ 6000 rpm |
| Ignition | CDI, magneto type |
| Induction | Mikuni VM24SS 24 mm slide type carburettor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 speed |
| Clutch | Wet, multiplate type |
| Final Drive | Chain, DID428SM, 117 links |
| CHASSIS SPECS | |
| Frame | Welded, tubular, double cradle with single downtube |
| Front Suspension | Telescopic, oil damped |
| Rear Suspension | Mono shocks |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | 2080 mm / 81.9 in |
| Overall Width | 885 mm / 34.8 in |
| Overall Height | 1120 mm / 44.1 in |
| Seat Height | 845 mm / 33.27 in |
| Wheelbase | 1350 mm / 53.1 in |
| Ground Clearance | 265 mm / 10.4 in |
| Dry Weight | 99 kg / 218 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 2.75-21 |
| Rear Tyre | 3.50-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 7 Litres / 1.5 US gal |
| Fuel Consumption | — |
| Top Speed | — |
Yamaha's reed-valve, air-cooled 175 cc two-stroke trail bike, a mainstay of the 1970s enduro line that grew out of the earlier CT series. The 1981 listing shows a six-speed box and monoshock rear suspension. It was the last year sold in North America before emissions rules ended it there, though it continued elsewhere.
