Yamaha YZF-R 125 WGP 50th Anniversary (2012) vs Kawasaki GPz 1100-B2 / Z 1100GP (1982) vs Yamaha FZ-6S Fazer (2009)
Comparison technical specifications
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| Make: | Yamaha | Kawasaki | Yamaha |
| Model: | YZF-R 125 WGP 50th Anniversary | GPz 1100-B2 / Z 1100GP | FZ-6S Fazer |
| Years: | 2012 | 1982 | 2009 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valve | Four stroke, transverse four cylinder, DOHC, 2 valve per cylinder. | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. |
| Capacity: | 124 cc / 7.6 cu-in | 1089 cc / 66.4 cu-in | 599 cc / 36.5 cu-in |
| Bore x Stroke: | 52 × 58.6 mm | 72.5 x 66 mm | 65.5 x 44.5 mm |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled |
| Compression Ratio: | 10.4:1 | 8.9:1 | 12.2:1 |
| Induction: | Fuel Injection | Bosch electronic fuel injection | Group injection type fuel injection, 36mm Funnel diameter |
| Ignition: | TCI | Electronic, CDI | TCI Digital CDI |
| Starting: | Electric | Electric | Electric |
| Max Power: | 12.6 kW / 17 hp @ 8500 rpm | 108 hp / 81 kW @ 8000 rpm | 98 hp / 72 kW @ 12000 rpm |
| Max Torque: | 15 Nm / 1.25 kg-m @ 7500 rpm | 95.1 Nm / 70.2 lb-ft @ 7000 rpm | 63.1 Nm / 6.4 kgf-m @ 10000 rpm |
| Transmission: | 6 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain |
| Frame: | Delta box | Steel cradle design | Aluminium, twin spar |
| Front Suspension: | Telescopic forks | Telescopic coil/air spring forks | 43mm Telescopic fork, |
| Front Wheel Travel: | 130 mm / 5.1 in | 138 mm / 5.4 in | 130 mm / 5.1 in |
| Rear Suspension: | Swinging arm | Swinging arm with 2 dampers adjustable for preload and damping | Swingarm Link less type Monocross |
| Rear Wheel Travel: | 125 mm / 4.9 in | 99 mm / 3.9 in | 120 mm / 4.7 in |
| Front Brakes: | Single 292mm disc | 2x 270mm discs 1 piston calipers | 2x 298 mm discs |
| Rear Brakes: | Single 230mm disc | Single 270mm disc 1 piston caliper | Single 245 mm disc |
| Front Tyre: | 90/80 -17 | 3.25-18 | 120/70 ZR17 |
| Rear Tyre: | 130/70 -17 | 4.25-18 | 180/55 ZR17 |
| Wheelbase: | 1355 mm / 53.3 inc | 1540 mm / 60.6 in | 1440 mm / 56.7 in |
| Seat Height: | 810 mm / 31.8 in | 780 mm / 30.8 in | 795 mm / 31.3 in |
| Dry Weight: | 127 kg / 279 lbs | 237.3 kg / 521 lbs | 186 kg / 410 lbs - ABS 191 kg / 421 lbs |
| Fuel Capacity: | 13.8 Litres / 3.6 gal | 21.4 Litres / 5.5 US gal | 19 Litres / 5.0 US gal |