| MODEL | YAMAHA XT 550 1982 |
| Year | 1982 |
| Engine Type | Four stroke, single cylinder, SOHC, 4 valve |
| Displacement / Capacity | 558 cc / 34.0 cu in |
| Bore X Stroke | 92 x 84 mm |
| Compression Ratio | 8.5:1 |
| Cooling System | — |
| Max Power | 27.7 kW / 38 hp @ 6500 rpm |
| Max Torque | 44.0 Nm / 4.5 kgf-m @ 5500 rpm |
| Ignition | CDI |
| Induction | 26 mm TK carburettor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | 38 mm air-assisted telescopic forks, 201 mm / 7.9 in travel |
| Rear Suspension | Monoshock, adjustable preload, 186 mm / 7.3 in travel |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | 2260 mm / 88.9 in |
| Overall Width | 860 mm / 33.8 in |
| Overall Height | 1180 mm / 46.4 in |
| Seat Height | 860 mm / 33.8 in |
| Wheelbase | 1400 mm / 55.1 in |
| Ground Clearance | 250 mm / 9.8 in |
| Dry Weight | 138 kg / 304.2 lbs |
| Wet Weight | 145 kg / 319.6 lbs |
| WHEEL SPECS | |
| Front Tyre | 3.00S-21-4PR |
| Rear Tyre | 4.60S-18-4PR |
| FUEL SYSTEM | |
| Fuel Capacity | 14 Litres / 3.6 US gal |
| Fuel Consumption | 47.3 mpg |
| Top Speed | 162.2 km/h / 100.8 mph |
The XT 550 was Yamaha's big-bore four-valve trail single of the early 1980s, a 558 cc air-cooled kick-start machine. It sat between the older XT 500 and the 595 cc XT 600 that followed, and offered long-travel air-assisted forks and a monoshock rear end. It was a light, road-and-trail all-rounder with drum brakes at both ends.
