Yamaha FZ-1 N (2008) vs Yamaha TX 650-III (1980) vs Yamaha TDR 250 (1989) vs Yamaha YBR 125 (2010-) vs Yamaha RD 350 (1974)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha | Yamaha | Yamaha |
| Model: | FZ-1 N | TX 650-III | TDR 250 | YBR 125 | RD 350 |
| Years: | 2008 | 1980 | 1989 | 2010- | 1974 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 5 valve per cylinder | Air cooled, four stroke, parallel twin cylinder. | Liquid cooled, two stroke, parallel twin cylinder, read valve, | Four stroke, single cylinder, SOHC, 2 valves | Two stroke, parallel twin cylinder, reed valves |
| Capacity: | 998 cc / 60.9 cu-in | 653 | 249 | 124 cc / 7.6 cu-in | 347 cc / 21.1 cu-in |
| Bore x Stroke: | 77 X 53.6 mm | 75 х 74 mm | 56.4 х 50 mm | 54 x 54 mm | 64 х 54 mm |
| Compression Ratio: | 11.5:1 | 8.4:1 | 5.9:1 | 10.0:1 | 6.6:1 |
| Induction: | Fuel injection | 2x 30.+mm Mikuni | 2x 28mm Mikuni carbs | Fuel infection | 2, Mikuni VM28 SC |
| Max Power: | 146.84 hp / 108 kW @ 11000 rpm | 50 hp @ 7500 rpm | 46 hp @ 9500 rpm | 10.1 hp / 7.4 kW @ 7800 rrpm | 39 hp / 28.5 kW @ 7500 rpm |
| Max Torque: | 106 Nm /10.5 kgf-m / 76.7 ft-lb @ 8000 rpm | 5.3 kgf-m @ 5500 rpm | 3.6 kgf-m @ 8000 rpm | 10 Nm @ 7400 rpm | 24.1 lb-ft / 32.6 Nm @ 7000 rpm |
| Front Suspension: | Telescopic upside forks, | Air assisted telescopic forks7-way adjustable preload, | Telescopic forks | Telescopic forks | |
| Rear Suspension: | Link-type swingarm, | Single shock rising rate adjustable preload, | Bottom link swingarm | Dual shocks | |
| Front Brakes: | 2x 320mm discs 4 piston calipers | 2x 297mm discs | Single 320mm disc 2 piston calipers | Single 245mm disc | Single 267mm disc 2 piston caliper |
| Rear Brakes: | Single 245mm disc 1 piston caliper | Drum | Single 210mm disc single piston caliper | Drum | 178mm Drum |
| Front Tyre: | 120/70 ZR17 | 3.50-19 | 110/90-18 | 90/90-M21 | 3.00-18 |
| Rear Tyre: | 190/50 ZR17 | 4.00-18 | 120/80-17 | 90/90-M18 | 3.25-18 |
| Fuel Capacity: | 18 Liters / 4.76 US gal | 17 Litres | 13.6 Litres | 12 Litres / 3.4 US gal | 15.9 Litres / 4.2 gal |