Honda XL 600R-M (1987) vs Yamaha TZR 125 Naked (1990-91) vs Yamaha FJR 1300 (2001) vs Yamaha YZF-R125 Monster Energy MotoGP Edition (2019)
Comparison technical specifications
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| Make: | Honda | Yamaha | Yamaha | Yamaha |
| Model: | XL 600R-M | TZR 125 Naked | FJR 1300 | YZF-R125 Monster Energy MotoGP Edition |
| Years: | 1987 | 1990-91 | 2001 | 2019 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valve per cylinder, RFVC radial valve | Two stroke, single cylinder, read valve, | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, single cylinder, SOHC, 4 valve |
| Capacity: | 589 cc / 35.6 cu-in | 124 cc / 7.6 cu-in | 1298 cc / 79.2 cu-in | 124.7 cc / 7.6 cu-in |
| Bore x Stroke: | 100 x 75 mm | 56.4 x 50 mm | 79 x 66.2 mm | 52 x 58.6 mm |
| Compression Ratio: | 9.0:1 | 5.9:1 | 10.8:1 | 11.2:1 |
| Induction: | 2 x 28mm piston valve | Mikuni VM26SS carburetor | Mikuni 42mm throttle body F.I. | Electronic fuel Injection |
| Ignition: | Solid state CD | CDI | CDI | TCI |
| Starting: | Primary kick with automatic compression release | Electric | Electric | |
| Max Power: | 33 kW / 45 hp @ 6500 rpm | 26.hp / 19.3 kW @ 10200 rpm | 145 hp / 105.7 kW @ 8500 rpm | 11 kW / 14.7 hp @ 9000 rpm |
| Max Torque: | 48.8 Nm / 36 lb-ft @ 5000 rpm | 1.8 kgf-m / 13 lb-ft @ 10000 rpm | 125 Nm / 13.7kgf-m / 99.1 ft-lb @ 6000 rpm | 12.4 Nm / 9 lb-ft @ 8000 rpm |
| Transmission: | 5 Speed | 6 Speed | 5 Speed | 6 Speed, Constant mesh |
| Final Drive: | Chain | Chain | Shaft | Chain |
| Front Suspension: | 39mm Showa air-adjustable leading-axle forks with dual Syntallic bushings | Telescopic fork | 48mm Soqi telescopic fork w/adjustable preload, compression and rebound damping | Upside-down telescopic fork, Ø 41 mm |
| Front Wheel Travel: | 220 mm / 9.0 in | 140 mm / 5.5 in | 137 mm / 5.3 in | 130 mm / 5.1 in |
| Rear Suspension: | Pro-link with adjustable rebound damping | Monocross | Single shock, link-type, w/adjustable preload and rebound damping | Swingarm, link type suspension |
| Rear Wheel Travel: | 203 mm / 8.0 in | 100 mm / 3.9 in | 122 mm / 5.1 in | 114 mm / 4.5 in |
| Front Brakes: | Single 240mm disc 2 piston calliper | Single disc | 2x 320mm discs 4 piston calipers | Single 292mm disc |
| Rear Brakes: | 140mm Drum | Drum | Single 283mm disc 2 piston caliper | Single 230mm disc |
| Front Tyre: | 3.00-21 | 90/90 16 | 120/70 ZR17 | 100/80 -17 M/C |
| Rear Tyre: | 5.10-17 | 100/90 18 | 180/55 ZR17 | 130/70 -17 M/C |
| Wet Weight: | 145 kg / 321 lbs | 122.7 kg / 269 lbs | 291 kg / 641.5 lbs | 142 kg / 313 lbs |
| Fuel Capacity: | 12 Litres / 3.2 US gal | 12 Litres / 3.1 US gal | 25 Liters / 5.5 gal | 11.5 Litres / 3.0 US gal |