| Year | 1978 |
| Bore x Stroke | 85 x 65.2 mm |
| Capacity | 369 cc / 22.5 cu in |
| Clutch | Wet multiplate |
| Compression Ratio | 8.7:1 |
| Consumption average | 5.2 L/100 km / 19.2 km/l / 46.2 US mpg / 54.2 Imp mpg |
| Cooling System | Air cooled |
| Dimensions | Length: 2120 mm / 83.5 in Width: 860 mm / 33.9 in |
| Dry Weight | 120 kg / 264 lbs |
| Engine | Four stroke, single cylinder, SOHC |
| Final Drive | Chain |
| Frame | Single downtube, cradle |
| Front Wheel Travel | 195 mm / 7.7 in |
| Front Brakes | 150 mm Drum |
| Front Suspension | Telescopic fork, oil/gas damped |
| Front Tyre | 3.00 - 21 PR |
| Fuel Capacity | 8.5 Litres / 2.2 US gal / 1.9 Imp gal |
| Ground Clearance | 225 mm / 8.9 in |
| Ignition | Magneto battery point |
| Induction | 1 x 32mm Mikuni BS32SS carburetor |
| Lubrication | Wet sump |
| Max Power | 19.3 kW / 26 hp @ 5700 rpm |
| Max Torque | 28 Nm / 2.86 kgf-m / 20.7 lb-ft @ 4000 rpm |
| Rear Wheel Travel | 132 mm / 5.2 in |
| Rear Brakes | 150 mm Drum |
| Rear Suspension | Full floater, swingarm, gas shocks |
| Rear Tyre | 4.00 -18 PR |
| Road Test | Yamaha TT500 vs Suzuki DR370 Modern Cycle |
| Standing ¼ Mile | 16.9 sec / 114 km/h / 70.8 mph |
| Starting | Kick |
| Steering Angle | 32° |
| Top Speed | 140 km/h . 87 mph |
| Trail | 146 mm / 5.7 in |
| Transmission | 5 Speed |
| Wheelbase | 1415 mm / 55.7 in |
| Wheels | Spoked aluminum |
