Yamaha XJ 600N (2001-04) vs Suzuki TU 250X (2005-07) vs BMW R 25/3 (1953-56)
Comparison technical specifications
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| Make: | Yamaha | Suzuki | BMW |
| Model: | XJ 600N | TU 250X | R 25/3 |
| Years: | 2001-04 | 2005-07 | 1953-56 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder | Four stroke, single cylinder, SOHC, 4 valves | Four stroke, single cylinder, pushrod operated, OHV, 2 valves per cylinder. |
| Capacity: | 599 cc / 36.5 cu-in | 249 cc / 15.2 cu-in | 247 cc / 15.1 cu in. |
| Bore x Stroke: | 58.5 x 55.7 mm | 72 x 61.2 mm | 68 x 68 mm |
| Cooling System: | Air cooled | Air/oil-cooled | Air cooled |
| Compression Ratio: | 10:1 | 9.0:1 | 6.5:1 |
| Induction: | 4x 28mm Mikuni BDS28 downdraft carburettors | EFI | 1x Bing type 1/24/41or SAWE type K24F |
| Ignition: | Transistor | Electronic ignition (fully transistorized) | Battery ignition |
| Starting: | Electric | Electric | Kick |
| Max Power: | 61 hp / 45 kW @ 8.500 rpm | 15 kW / 20 hp @ 8000 rpm | 9.7 kW / 13 hp @ 5600 rpm |
| Transmission: | 6 Speed | 5 Speed | 4 Speed |
| Final Drive: | Chain | Chain | Shaft |
| Front Suspension: | 38mm Telescopic forks, no adjustment | Telescopic, hydraulic dampers, coil springs | Telescopic fork |
| Rear Suspension: | Monocross monoshock adjustable for preload | Swinging arm, hydraulic dampers, coil springs | Telescopic suspension |
| Rear Brakes: | Single 245mm disc 2 piston caliper | Drum | ∅160mm Drum |
| Front Tyre: | 110/80H17 | 90/90-18 | 3.25 x 19" |
| Rear Tyre: | 130/70H18 | 110/90-18 | 3.25 x 18" |
| Fuel Capacity: | 17 Litres / 4.4 US gal | 12 Litres / 3.2 US gal / 2.6 Imp gal | 12 L / 3.1 US gal |