Kawasaki Z 750F (1977) vs Yamaha YZF 600R Thundercat (1999) vs Yamaha XT 600E (1999-00) vs Suzuki DR 250S (1982-83)
Comparison technical specifications
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| Make: | Kawasaki | Yamaha | Yamaha | Suzuki |
| Model: | Z 750F | YZF 600R Thundercat | XT 600E | DR 250S |
| Years: | 1977 | 1999 | 1999-00 | 1982-83 |
| Engine: | Four stroke, transverse four cylinder. DOHC, 2 valve per cylinder | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, single cylinder, SOHC, 4 valve | Four stroke, single cylinder, SOHC, 4 valves, TSCC |
| Capacity: | 746 cc / 45.5 cu-in | 599 cc / 36.5 cu-in | 595 cc / 36.3 cu-in | 249 cc / 15.2 cu in |
| Bore x Stroke: | 64 х 58 mm | 62 x 49.6 mm | 95 x 84 mm | 72 х 61.2 mm |
| Cooling System: | Air cooled | Liquid cooled | Air/oil cooled | Air cooled |
| Compression Ratio: | 12.0:1 | 8.5:1 | 8.9:1 | |
| Induction: | 4x Mikuni VM 28 SC carburetors | 4 x 36 mm Keihin CV downdraft carburetors | Single 28mm Y26PV carburetor | Mikuni VM28SS carburetor |
| Ignition: | Battery & coil | Digital TCI | T.C.I. | Transistorized |
| Starting: | Electric & kick | Electric | Electric | Kick |
| Max Power: | 70 hp / 52.1 kW @ 9000 rpm | 72.9 kW / 100 hp @ 11500 rpm | 45 hp / 32.8 kW @ 6500 rpm | 16.5 kW / 22 hp @ 8700 rpm |
| Max Torque: | 5.9 kgf-m / 42.6 lb-ft @ 7500 rpm | 65.7 Nm / 6.7 kgf-m / 48.7 lb-ft @ 9500 rpm | 50 Nm / 5.1 kg-m @ 5500 rpm | 19.5 Nm / 2.0 kgf-m / 14.5 lb-ft @6500 rpm |
| Transmission: | 5 Speed | 6 Speed | 5 Speed | 5 Speed, constant mesh |
| Final Drive: | Chain, 96 Link | 530 O-ring chain OEM sprocket sizes per tooth Front= 15 Back= 47 | Chain | Chain |
| Front Suspension: | Telescopic forks | 41 mm telescopic fork adjustable preload, compression and rebound damping | 41mm Telescopic forks, oil damped | Air/oil telescopic forks |
| Rear Suspension: | Swing arm dual shocks | Monoshock adjustable preload, bump and rebound | Monocross with preload adjustment, | Gas/oil full floater, preload and damping adjustable, 148mm wheel travel |
| Front Brakes: | 2x disc | 2x 300 mm Discs, 4 piston calipers | Single 267mm discs 2 piston caliper | Drum, internal expanding |
| Rear Brakes: | Drum | Single 245mm disc, 2 piston caliper | Single 220mm disc single piston caliper | Drum, internal expanding |
| Front Tyre: | 3.25-19 | 120/60-17 | 90/90-21 | 3.00-21, 4PR |
| Rear Tyre: | 4.00-18 | 160/60-17 | 120/90-17 | 5.10-17, 4PR |
| Dry Weight: | 230 kg / 507 lbs | 189 kg / 417 lbs | 156 kg / 344 lbs | 113 kg / 249 lbs |
| Fuel Capacity: | 17.7 Litres / 4.6 US gal | 19 Litres / 5.0 US gal / 4.2 Imp gal | 15 Litres / 4.0 US gal | 9.5 Litres / 2.5 US gal / 2.1 Imp gal |