Ducati 350 Desmo (1974-78) vs Yamaha TT-R 225 (2003-05) vs Yamaha XS 400 (1979-)
Comparison technical specifications
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| Make: | Ducati | Yamaha | Yamaha |
| Model: | 350 Desmo | TT-R 225 | XS 400 |
| Years: | 1974-78 | 2003-05 | 1979- |
| Engine: | Four stroke, single cylinder, SOHC | Four stroke, single cylinder, SOHC, 2 valve | Four stroke, 180° parallel twin, SOHC, 2 valves per cylinder |
| Capacity: | 340.2 cc / 20.8 cu in | 223 cc / 13.6 cu-in | 392 cc / 23.9 cu-in |
| Bore x Stroke: | 76 x 75 mm | 70 x 58 mm | 69.0 x 52.4 mm |
| Compression Ratio: | 10.0:1 | 9.5: | 9.2:1 |
| Induction: | Dell'Orto SS1 29D | 26mm Teikei carburetor | 2x Mikuni BS32 carburetors |
| Ignition: | Electronic | CDI | Battery ignition - With contact breaker points |
| Starting: | Kick | Electric | Electric & kick |
| Max Power: | 17.7 kW / 24 hp @ 8500 rpm | NA | 36 hp / 26.8 kW @ 8100 rpm |
| Transmission: | 5 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | 35 mm Marzpcchi hydraulic telescopic fork | Telescopic forks | Telescopic fork |
| Rear Suspension: | Swingarm, Marzocchi dual shocks, 3-way adjustable | Link Type single shock | Dual shocks swing arm, preload adjustable |
| Front Brakes: | Single 280 mm disc | Single 229mm disc | Single disc |
| Rear Brakes: | 160 mm Drum | Drum | Drum |
| Front Tyre: | 2.75-18 | 80/100-21 | 3.00-18 |
| Rear Tyre: | 3.25-18 | 100/100-18 | 3.50-18 |
| Wheelbase: | 1360 mm / 53.5 in | 1372 mm / 54 in | 1364 mm / 53.7 in |
| Seat Height: | 735 mm / 29.0 in | 870 mm / 34.2 in | 780 mm / 30.7 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 |