Ducati 175 Gran Sport (1957-62) vs Honda VFR 400R (1989) vs Suzuki AC 50 Colt (1974) vs Kawasaki ZX-9R Ninja (1994) vs Yamaha XT 250 Serow (2006-07)
Comparison technical specifications
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| Make: | Ducati | Honda | Suzuki | Kawasaki | Yamaha |
| Model: | 175 Gran Sport | VFR 400R | AC 50 Colt | ZX-9R Ninja | XT 250 Serow |
| Years: | 1957-62 | 1989 | 1974 | 1994 | 2006-07 |
| Engine: | Four stroke, single cylinder, SOHC, shaft and bevel gear driven, 2 valves per cylinder | Four stroke 90°V-four cylinder, DOHC, 4 valves per cylinder | Two stroke, rotary valve, single cylinder | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, single cylinder. SOHC, 2 valve |
| Capacity: | 175.4 cc / 10.7 cu in | 399 cc / 15.7 cu-in | 49 cc / 3.0 cu in | 899 cc / 54.8 cu-in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 62 x 57.8 mm | 55 x 42 mm | 41 x 37.8 mm | 73 x 53.7 mm | 74.0 x 58.0mm |
| Cooling System: | Air cooled | Liquid cooled | Air cooled | Liquid cooled | Air cooled |
| Starting: | Kick | Electric | Kick | Electric | Electric |
| Max Power: | 11.9 kW / 16 hp @ 9000 rpm | 59 hp / 43.1 kW @ 12800 rpm | 3.6 kW / 4.8 hp @ 8500 rpm | 139 hp / 103.6 kW @ 10500 rpm | 18 hp / 13.1 kW @ 7500 rpm |
| Transmission: | 4 Speed | 6 Speed | 5-Speed, constant mesh | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain | Chain | Chain | Chain |
| Front Suspension: | Hydraulic telescopic fork | 41mm inverted forks: preload and rebound damping | Telescopic fork | 43 mm upside-down KYB fully adjustable, adjustable compression, rebound and preload. | 35mm Telescopic forks |
| Rear Suspension: | Swingarm, dual shocks | Rising-rate monoshock: pre-load and rebound damping | Dual shock, swingarm | Uni-Trak adjustable compression, rebound and preload. | Monocross, Swingarm rebound-adjustable single shock |
| Front Brakes: | Drum, full aluminium | 2x 269mm 4 piston calipers | Drum | 2x 310mm discs 4 piston calipers | Single 245mm disc |
| Rear Brakes: | Drum, full aluminium | Single disc 2 piston caliper | Drum | Single 210mm disc 1 piston caliper | Single 203mm disc |
| Front Tyre: | 2.50 -18 | 100/90 R16 | 2.25-17 4PR | 120/70 ZR7 | 80/70-21 |
| Rear Tyre: | 2.75 -18 | 140/60 R18 | 2.25-17 4PR | 180/55 ZR17 | 120/80-18 |
| Dry Weight: | 103 kg / 227 lbs | 170 kg / 374.7 lbs | 73 kg / 160 lbs | 216 kg / 477 lbs | 123 kg / 271 lbs |
| Fuel Capacity: | 17 L / 4.5 US gal / 3.7 Imp gal | 18 Litres / 4.0 gal | 5.5 L / 1.5 US gal | 20 Litres / 5.0 US gal | 9.8 Litres / 2.6 US gal |