Kawasaki GPX 750R (1990) vs Ducati 250 Mach 1 (1964-66) vs Suzuki DR-Z4SM (2025) vs Velocette U (1928)
Comparison technical specifications
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| Make: | Kawasaki | Ducati | Suzuki | Velocette |
| Model: | GPX 750R | 250 Mach 1 | DR-Z4SM | U |
| Years: | 1990 | 1964-66 | 2025 | 1928 |
| Engine: | Four stroke, transverse four cylinders, DOHC, 4 valve per cylinder | Four stroke, single cylinder, Desmo SOHC, bevel gear-drive | Four stroke, single cylinder, DOHC, 4 valve | Two stroke, single cylinder |
| Capacity: | 742 cc / 45.6 cu-in | 248.6 cc / 15.2 cu in | 398 cc / 24.3 cu-in | 249 cc / 15.2 cub in. |
| Bore x Stroke: | 68 x 51.5 mm | 74 x 57.8 mm | 90 x 62.6 mm. | 63 x 80 mm |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled | Air cooled |
| Starting: | Elctric | Kick | Electric | Kick start |
| Transmission: | 6 Speed | 5 Speed | 5 Speed | 3 speed, hand controlled gearbox |
| Final Drive: | Chain | Chain | Chain, #520 | Chain |
| Front Suspension: | 38mm Telehydraulic forks electrically activated anti-dive | Hydraulic telescopic fork, Ducati 31.5 mm | Telescopic, 49 mm, oil-damped, 11-way compression damping, adjustable spring preload | Webb forks |
| Rear Suspension: | Unit-track air assisted 4-way rebound damping adjustment. | Swingarm, dual shocks, Marzocchi 295 mm, three-way adjustable | Link-type, fully adjustable spring preload, 26-way compression damping | Spring loaded saddle |
| Front Brakes: | 2x 270mm discs 4 piston calipers | Drum, 180 mm | Single disc | Drum |
| Rear Brakes: | Single 230mm disc 2 piston caliper | Drum, 160 mm | Single disc | Drum |