Ducati 350 Desmo (1974-78) vs Yamaha TT-R 225 (2003-05) vs Yamaha XS 400 (1979-) vs Yamaha FJR 1300A (2008) vs Yamaha WR 250R (2008-09)
Comparison technical specifications
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| Make: | Ducati | Yamaha | Yamaha | Yamaha | Yamaha |
| Model: | 350 Desmo | TT-R 225 | XS 400 | FJR 1300A | WR 250R |
| Years: | 1974-78 | 2003-05 | 1979- | 2008 | 2008-09 |
| Engine: | Four stroke, single cylinder, SOHC | Four stroke, single cylinder, SOHC, 2 valve | Four stroke, 180° parallel twin, SOHC, 2 valves per cylinder | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, single cylinder, DOHC, 4 valve |
| Capacity: | 340.2 cc / 20.8 cu in | 223 cc / 13.6 cu-in | 392 cc / 23.9 cu-in | 1298 cc / 79.2 cu-in | 249 / 15.2 cub in. |
| Bore x Stroke: | 76 x 75 mm | 70 x 58 mm | 69.0 x 52.4 mm | 79 x 66.2 mm | 77 x 53.6 mm |
| Compression Ratio: | 10.0:1 | 9.5: | 9.2:1 | 10.8:1 | 11.8:1 |
| Induction: | Dell'Orto SS1 29D | 26mm Teikei carburetor | 2x Mikuni BS32 carburetors | Electronic Fuel Injection | Electronic fuel injection |
| Ignition: | Electronic | CDI | Battery ignition - With contact breaker points | TCI (Transistor Controlled Ignition) | TCI |
| Starting: | Kick | Electric | Electric & kick | Electric | Electric |
| Max Power: | 17.7 kW / 24 hp @ 8500 rpm | NA | 36 hp / 26.8 kW @ 8100 rpm | 145 hp / 105.7 kW @ 8500 rpm | 22.6 kW / 30.3 hp @ 10 000 rpm |
| Transmission: | 5 Speed | 6 Speed | 6 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain | Shaft | Chain |
| Front Suspension: | 35 mm Marzpcchi hydraulic telescopic fork | Telescopic forks | Telescopic fork | 48mm upside-down telescopic fork w/adjustable preload, compression and rebound damping; | Telescopic fork |
| Rear Suspension: | Swingarm, Marzocchi dual shocks, 3-way adjustable | Link Type single shock | Dual shocks swing arm, preload adjustable | Single shock, link-type, w/adjustable preload and rebound damping; | Swingarm link suspension, mono-shock |
| Front Brakes: | Single 280 mm disc | Single 229mm disc | Single disc | 2x 320mm discs 4 piston calipers | Single 250mm disc |
| Rear Brakes: | 160 mm Drum | Drum | Drum | Single 283mm disc 2 piston caliper | Single 230mm disc |
| Front Tyre: | 2.75-18 | 80/100-21 | 3.00-18 | 120/70 ZR17 | 80/100 -21 |
| Rear Tyre: | 3.25-18 | 100/100-18 | 3.50-18 | 180/55 ZR17 | 120/80 -18 |
| Wheelbase: | 1360 mm / 53.5 in | 1372 mm / 54 in | 1364 mm / 53.7 in | 1544.3 mm / 60.8 in | 1420 mm / 55.9 in. |
| Seat Height: | 735 mm / 29.0 in | 870 mm / 34.2 in | 780 mm / 30.7 in | 805 mm - 825.5 mm / 31.7 in - 32.5 in. | 930 mm / 36.6 in |
| Fuel Capacity: | 13 L / 3.4 US gal / 2.9 Imp gal | 10.2 Litres / 2.7 US gal | 14 Litres / 3.7 US gal | 25 Liters / 6.6 gal | 7.6 Litres / 2.0 US gal |