Yamaha FZ-6N (2004) vs Yamaha XT 250 (1979-80)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | FZ-6N | XT 250 |
| Years: | 2004 | 1979-80 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, single cylinder, SOHC, 2 valve |
| Capacity: | 599 cc / 36.5 cu-in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 65.5 x 44.5 mm | 75 х 56.5 mm |
| Compression Ratio: | 12.2:1 | 9.2:1 |
| Cooling System: | Liquid cooled | Air cooled |
| Lubrication: | Wet sump | Wet sump |
| Induction: | Group injection type fuel injection, 36mm Funnel diameter | Single 28mm Mikuni caruretor |
| Ignition: | TCI Digital CDI | CDI |
| Starting: | Electric | Kick |
| Max Power: | 98 hp / 72 kW @ 12000 rpm | 22 hp / 16.1 kW @ 8000 rpm |
| Max Torque: | 63.1 Nm / 6.4 kgf-m @ 10000 rpm | 2 kgf-m / 14.4 lb-ft @ 6500 rpm |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | 43mm Telescopic fork, | Leading axle, coil spring forks |
| Rear Suspension: | Swingarm Link less type Monocross | Swing arm single Kayaba shock |
| Front Brakes: | 2x 298 mm discs | 130mm Drum |
| Rear Brakes: | Single 245 mm disc | 130mm Drum |
| Front Tyre: | 120/70 ZR17 | 3.00-21 |
| Rear Tyre: | 180/55 ZR17 | 4.60-17 |
| Wheelbase: | 1440 mm / 56.6 in | 1395 mm / 54.9 in |
| Seat Height: | 795 mm / 31.2 in | 840 mm / 33.0 in |
| Ground Clearance: | 145 mm / 5.7 in | 255 mm / 10.0 in |
| Dry Weight: | 180 kg / 396.8 lbs | 114 kg / 251.3 lbs |
| Fuel Capacity: | 19 Litres / 5.0 US gal | 8 Litres / 2.1 US gal |
| Standing ¼ Mile: | 11.5 sec | 16.4 sec / 74.5 mph 120 km/h |
| Top Speed: | 228.0 km/h / 141.6 mph | 80 mph 128.7 km/h |