Yamaha XV 250 Virago (1997-99) vs Ariel Square Four 4G 1000, Mark I, Mark II (1936-48)
Comparison technical specifications
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| Make: | Yamaha | Ariel |
| Model: | XV 250 Virago | Square Four 4G 1000, Mark I, Mark II |
| Years: | 1997-99 | 1936-48 |
| Engine: | Four stroke, V-Twin cylinder, SOHC, 2 valve per cylinder | Four stroke, vertical square four, OHV, 8 valves |
| Capacity: | 249 cc / 15.2 cu-in | 997 cc / 60.8 cu in |
| Bore x Stroke: | 49 x 66 mm | 65 x 78 mm |
| Cooling System: | Air cooled | Air cooled |
| Compression Ratio: | 10.0:1 | 6.0:1 |
| Induction: | BDS26 Mikuni carburetor | SU carburetor |
| Starting: | Electric | Kick start |
| Max Power: | 23 hp / 17.1 Kw @ 8000 rpm | F4 G, Mk I: 26 kW / 35 hp @ 5500 rpm Mk II: 34 kW / 45 hp @ 5500 rpm |
| Transmission: | 5 Speed | 4-Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Telescopic forks | Telescopic fork |
| Frame: | Camshaft Valvetrain Configuration | Single down tube |
| Rear Suspension: | Dual shocks | Plunger-link spring |
| Front Brakes: | Single 282mm disc | Drum |
| Rear Brakes: | 130mm drum | Drum |
| Wheelbase: | 1495 mm / 58.9 in | 1422 mm / 56 in |
| Dry Weight: | 137 kg / 302 lbs | 4G: 211 kg / 465 lbs Mk I: 197 kg / 435 lbs Mk II: 193 lg: 425 lbs |
| Fuel Capacity: | 9.5 Liters / 2.5 US gal | 23 L / 6.0 US gal |
| Top Speed: | 136.2 km/h | 4G: 141 km/h / 87 mph Mk I: 145 km/h / 90 mph Mk II: 160 km/h / 100 mph |