Yamaha WR 250F (2011-12) vs Ducati 450 Desmo (1973-74) vs Yamaha XVS 650 V-Star Classic (2011-13)
Comparison technical specifications
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| Make: | Yamaha | Ducati | Yamaha |
| Model: | WR 250F | 450 Desmo | XVS 650 V-Star Classic |
| Years: | 2011-12 | 1973-74 | 2011-13 |
| Engine: | Four stroke, single cylinder, DOHC, 5 valve | Four stroke, single cylinder, SOHC, bevel gear driven, desmodromic | Four stroke, 70°V-twin cylinder, SOHC |
| Capacity: | 249 cc / 15.2 cu-in | 435.7 cc / 26.6 cu in | 649 cc / 39.6 cu-in |
| Bore x Stroke: | 77 x 53.6 mm | 86 x 75 mm | 81 x 63mm |
| Cooling System: | Liquid cooled, | Air cooled | Air cooled |
| Compression Ratio: | 12.5:1 | 9.5:1 | 9.0:1 |
| Induction: | Keihin FCR-MX37 flat-slide w/throttle position sensor) | Dell'Orto VHB 29 A | 2x 28mm Mikuni BDS28 CV carburetors |
| Ignition: | Digital CDI | Points and coil (electronic from 1973) | Digital TCI |
| Starting: | Electric / Kick | Kick | Electric |
| Transmission: | 5 Speed | 5 Speed | 5 Speed |
| Final Drive: | #520 Chain | Chain | Shaft |
| Front Suspension: | 48mm Fully adjustable inverted forks | 35 mm Marzocchi telescopic fork (from 1974: 35 mm Ceriani) | 41mm forks |
| Rear Suspension: | Fully adjustable link Monocross | Swingarm, dual Marzocchi shocks, 3-way adjustable | Adjustable link Monocross |
| Front Brakes: | Single 250mm disc 2 piston caliper | Single 280 mm disc | Single 298mm disc |
| Rear Brakes: | Single 240mm disc 1 piston caliper | 150 mm Drum | 200mm Drum |
| Front Tyre: | 80/100-21 | 2.75-18 | 130/90-16 |
| Rear Tyre: | 100/100-18 | 3.00 x 18 or 3.25 x 18 | 170/80-15 |
| Dimensions: | Height 1275 mm / 50.2 in Width 826 mm / 32.5 in Length 2315 mm / 91.1 in | Length: 2000 mm / 78.7 in Width: 600 mm / 23.6 in Height: 940 mm / 37.0 in | Length 2451 mm / 96.5 in Width 930 mm / 36.6 in Height 1105 mm / 43.5 in |
| Wheelbase: | 1475 mm / 58.1 in | 1360 mm / 53.5 in | 1626 mm / 64.0 in |
| Seat Height: | 980 mm / 38.6 in | 735 mm / 28.9 in | 710 mm / 28 in |
| Dry Weight: | 106 kg / 233.2 lbs | 130 kg / 286 lbs | 225 kg / 495 lbs |
| Fuel Capacity: | 8 Liters / 2.1 gal | 13 L / 3.4 US gal / 2.9 Imp gal | 16 Litres / 4.2 US gal |