Kawasaki ZX-6R Ninja (1999) vs Yamaha YZF 750R (1995) vs Yamaha YDS-7 (1972) vs Ducati 350GTV (1977-81)
Comparison technical specifications
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| Make: | Kawasaki | Yamaha | Yamaha | Ducati |
| Model: | ZX-6R Ninja | YZF 750R | YDS-7 | 350GTV |
| Years: | 1999 | 1995 | 1972 | 1977-81 |
| Engine: | Four stroke, transverse four cylinders, DOHC, 4 valve per cylinder | Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder. | Two stroke, piston-port, parallel twin | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. |
| Capacity: | 598cc / 36.5 cub in. | 749 cc / 45.7 cu-in | 247 cc / 15.0 cu-in | 349.6 cc / 21.3 cu in |
| Bore x Stroke: | 64 x 46.6 mm | 72 x 46 mm | 54 x 54 mm | 71.8 x 43.2 mm |
| Compression Ratio: | 12.0:1 | 11.5:1 | 7.5;1 | 9.6:1 |
| Cooling System: | Liquid cooled | Liquid cooled | Air-cooled | Air cooled |
| Induction: | 4 x 36mm Keihin CVKD36 carburetors | 4x Mikuni BDST38 carbs | 26mm Mikuni | 2 x 26 mm Dell'Orto VHB 26 FS/FD |
| Ignition: | Digital | T.C.I. Digital / electric | Mitsubishi contact breaker | Points and coil, 12V 150W generator |
| Starting: | Electric | Electric | Kick | Electric |
| Max Power: | 76.5 kW / 105 hp @ 12500 rpm | 125 hp / 91.1 kW @ 12000 rpm | 30 hp @7500 rpm | 17.5 kW / 24 hp @ 7500 rpm |
| Transmission: | 6 Speed | 6 Speed | 5 Speed Helical-gear primary drive. Rear chain % x %in with top guard. Engine rpm at 30 mph in top gear, approximately 2,500. | 5-Speed |
| Final Drive: | Chain | Chain | Chain | Chain |
| Wheelbase: | 1466 mm / 57.7 in. | 1,420 mm / 55.9 in | 1300 mm / 51.1 in | 1400 mm / 55.1 in |
| Front Suspension: | 41mm Showa telescopic forks. | 41mm USD forks adjustable preload rebound and compression | 34mm Telescopic forks | 35 mm Paioli fork |
| Rear Suspension: | Showa sing shock, adjustable preload and rebounding preload. | Monocross adjustable preload rebound | Twin shock | Dual Marzocchi shocks, 3-way adjustable |
| Front Brakes: | 2 x 270mm discs, 4 piston calipers | 2x 320mm discs 6 piston calipers | 180mm twin leading shoe drum | 2 x 256 mm Brembo discs |
| Rear Brakes: | Single 130mm disc, 1 piston caliper | Single 245mm disc 2 piston caliper | 180mm single leading shoe | Single 257mm Brembo disc |
| Front Tyre: | 120/60 ZR17 | 120/70 ZR17 | 300 x 18 | 3.25-18 |
| Rear Tyre: | 160/60 ZR17 | 180/55 ZR17 | 3.25 x 18 | 3.50-18 |
| Fuel Capacity: | 5.6 L/100 km / 18.2 Litres / 4.8 US gal | 19 Litres / 4.3 gal | 11.4 Litres / 3.0 gal | 14 L / 3.7 US gal / 3.1 Imp gal |