The Yamaha XS 650 (XS-2) motorcycle was produced in 1972 and featured a four-stroke, parallel twin-cylinder engine with a capacity of 653 cc. The engine had a compression ratio of 8.4:1 and was cooled by air with wet sump lubrication. It had 2 valve per cylinder, with a bore x stroke of 75 x 74 mm. Induction was done through 2 Mikuni BS38 carburettors and it was ignited by battery and induction coil. Starting was through kick. The motorcycle had a maximum power of 39.5 kW or 53 hp at 7200 rpm and a maximum torque of 54 Nm at 6800 rpm. Transmission was via a 5-speed gearbox with a final drive through chain. The front suspension featured telescopic forks with dual shock absorbers at the rear. It had a single disc front brake and a drum rear brake, with tyre sizes of 3.50-19 and 4.00-18 respectively. The motorcycle had dimensions of 2175 mm (length) x 905 mm (width) x 1135 mm (height) with a wheelbase of 1410 mm and ground clearance of 150 mm. The dry weight was 185 kg with a fuel capacity of 12.5 litres and oil capacity of 3.0 litres. The top speed of the Yamaha XS 650 was 185 km/h or 115 mph.
Technical specifications:
Make Model: Yamaha XS 650 (XS-2)
| Year | 1972 |
|---|---|
| Engine | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. |
| Capacity | 653 cc / 39.8 cu in |
| Bore x Stroke | 75 x 74 mm |
| Compression Ratio | 8.4:1 |
| Cooling System | Air cooled |
| Lubrication | Wet sump |
| Induction | 2 x Mikuni BS38 carburetors |
| Ignition | Battery, induction coil |
| Starting | Kick |
| Max Power | 39.5 kW / 53 hp @ 7200 rpm |
| Max Torque | 54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 6800 rpm |
| Transmission | 5 Speed |
| Final Drive | Chain |
| Front Suspension | Telescopic forks |
| Rear Suspension | Dual shock absorbers |
| Front Brakes | Single disc |
| Rear Brakes | Drum |
| Front Tyre | 3.50-19 |
| Rear Tyre | 4.00-18 |
| Dimensions | Length: 2175 mm / 85.6″Width: 905 mm / 35.0″Height: 1135 mm / 44.7″ |
| Wheelbase | 1410 mm / 55.5″ |
| Ground Clearance | 150 mm / 5.5″ |
| Dry Weight | 185 kg / 408 lbs |
| Fuel Capacity | 12.5 Litres / 3.3 US gal |
| Oil Capacity | 3.0 Litres / 3.2 US qts |
| Top Speed | 185 km/h / 115 mph |
