Yamaha YR-1 (1967) vs Yamaha FJR 1300A (2005) vs Yamaha YZF-R 125 (2014)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha |
| Model: | YR-1 | FJR 1300A | YZF-R 125 |
| Years: | 1967 | 2005 | 2014 |
| Engine: | Two stroke, parallel twin | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, single cylinder, SOHC, 4 valve |
| Capacity: | 347 cc / 21.1 cu-in | 1298 cc / 79.2 cu-in cc / 79.2 cu-in | 124 cc / 7.6 cu-in |
| Bore x Stroke: | 61 х 59.6 mm | 79 x 66.2 mm | 52 x 58.6 mm |
| Compression Ratio: | 7.5:1 | 10.8:1 | 11.2:1 |
| Cooling System: | Air cooled | Liquid cooled, | Liquid cooled |
| Induction: | Carburettor | Mikuni 42mm throttle body F.I. | Fuel Injection |
| Ignition: | CDI | TCI | |
| Starting: | Kick | Electric | Electric |
| Max Power: | 36.5 hp / 27.2 kW @ 7500 rpm | 145 hp / 105.7 kW @ 8500 rpm | 11 kW / 15 hp @ 9000 rpm |
| Max Torque: | 3.3 kg-m / 23.9 ft-lb @ 7000 rpm | 125 Nm / 13.7kgf-m / 99.1 ft-lb @ 6000 rpm | 12.4 Nm / 1.25 kg-m @ 8000 rpm |
| Transmission: | 5 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Shaft | Chain |
| Front Suspension: | 48mm Soqi telescopic fork w/adjustable preload, compression and rebound damping | Upside-down telescopic fork, Ø 41 mm | |
| Rear Suspension: | Single shock, link-type, w/adjustable preload and rebound damping | Linked monoshock with spring preload adjustment | |
| Front Brakes: | Drum | 2x 320mm discs 4 piston calipers | Single 292mm disc |
| Rear Brakes: | Drum | Single 283mm disc 2 piston caliper | Single 230mm disc |
| Front Tyre: | 3.00-18 | 120/70 ZR17 | 110/80 -17 |
| Rear Tyre: | 3.50-18 | 180/55 ZR17 | 130/70 -17 |
| Wheelbase: | 1335 mm / 52.5 in | 1545 mm / 60.8 in | 1355 mm / 53.3 inc |
| Fuel Capacity: | 15 Litres / 4.0 gal | 25 Liters / 5.5 gal | 11.5 Litres / 3.0 gal |