| MODEL | YAMAHA XS 850G 1980 |
| Year | 1980 |
| Engine Type | Four-stroke, transverse three-cylinder, DOHC, 2 valves per cylinder |
| Displacement / Capacity | 826 cc / 50.4 cu in |
| Bore X Stroke | 71.5 x 68.6 mm |
| Compression Ratio | 9.2:1 |
| Cooling System | Air cooled |
| Max Power | 57.7 kW / 79 hp @ 8500 rpm |
| Max Torque | — |
| Ignition | — |
| Induction | 3 x 34 mm Hitachi carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5-speed |
| Clutch | — |
| Final Drive | Shaft |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Air-assisted telescopic forks, 175 mm / 6.9 in travel |
| Rear Suspension | Swing arm, 4-way adjustable damping, 99 mm / 3.9 in travel |
| Front Brakes | 2 x 267 mm discs, single-piston calipers |
| Rear Brakes | Single 267 mm disc, single-piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 258 kg / 569 lbs |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | 24 Litres / 6.3 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 1980 enlargement of the XS triple to 826 cc via bigger bores, with a stronger crank, an oil cooler and Hitachi carburettors. European bikes got a 24-litre tank and an 8-inch headlight.
