Yamaha TX 650-III (1980) vs Yamaha SR 400 (2010-11)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | TX 650-III | SR 400 |
| Years: | 1980 | 2010-11 |
| Engine: | Air cooled, four stroke, parallel twin cylinder. | Four stroke, single cylinder, SOHC, 2 valves per cylinder. |
| Capacity: | 653 | 399 cc / 24.3 cu-in |
| Bore x Stroke: | 75 х 74 mm | 87 х 67.2 mm |
| Compression Ratio: | 8.4:1 | 8.5:1 |
| Induction: | 2x 30.+mm Mikuni | Fuel injection |
| Max Power: | 50 hp @ 7500 rpm | 27 hp / 17.1 KW @ 7000 rpm |
| Max Torque: | 5.3 kgf-m @ 5500 rpm | 27.4 Nm / 6.3 kgf-m @ 6500 rpm |
| Front Suspension: | Telescopic fork | |
| Rear Suspension: | Dual shocks | |
| Front Brakes: | 2x 297mm discs | Single disc |
| Rear Brakes: | Drum | Drum |
| Front Tyre: | 3.50-19 | 3.50-19 |
| Rear Tyre: | 4.00-18 | 4.00-16 |
| Fuel Capacity: | 17 Litres | 12 Litres / 3.2 gal |