The Yamaha TX650 III was a motorcycle produced from 1973-74 with a four-stroke, parallel twin cylinder, SOHC engine and a 653cc capacity. The bike had a compression ratio of 8.4:1 and was air cooled with wet sump lubrication. It utilized 2 Mikuni carburetors and a battery induction coil for ignition, and could be started with a kick. The maximum power output was 39.5 kW/53 hp at 7200 rpm, and the maximum torque was 54 Nm/5.5 kgf-m/39.8 lb-ft at 6800 rpm. The bike had a five-speed transmission and used a chain for the final drive. Its front suspension utilized telescopic forks, while the rear suspension had dual shock absorbers. The front brake was a single disc, and the rear brake was a drum. The bike had a length of 2175 mm, a width of 905 mm, and a height of 1135 mm, with a wheelbase of 1410 mm and a ground clearance of 150 mm. It had a dry weight of 191kg and a fuel capacity of 12.5 litres. The average fuel consumption was 5.0 L/100 km, and the oil capacity was 3.0 litres. The bike had a top speed of 185 km/h or 115 mph.
Technical specifications:
Make Model: Yamaha XS 650 / TX 650
| Year | 1973 – 74 |
|---|---|
| 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 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 | 191 kg / 420 lbs |
| Fuel Capacity | 12.5 Litres / 3.3 US gal |
| Average Consumption | 5.0 L/100 km / 20 km/l / 47 US mpg |
| Oil Capacity | 3.0 Litres / 3.2 US qts |
| Top Speed | 185 km/h / 115 mph |
