Kawasaki GPz 400S (1986-87) vs Kawasaki GPz 550 / Z 550GP (1984)
Comparison technical specifications
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| Make: | Kawasaki | Kawasaki |
| Model: | GPz 400S | GPz 550 / Z 550GP |
| Years: | 1986-87 | 1984 |
| Engine: | Four stroke, parallel twin cylinder, DOHC, 4 valve per cylinder. | Four stroke, transverse four cylinder, DOHC, 2 valve per cylinder. |
| Capacity: | 399 cc / 24.3 cu-in | 553 cc / 33.7 cu-in |
| Bore x Stroke: | 70 x 51 mm | 58 x 52.4 mm |
| Cooling System: | Liquid cooled | Air cooled |
| Compression Ratio: | 10.7:1 | 10.0:1 |
| Induction: | 4x Kelhin CVM30 carburetors | 4x 22mm Teikei constant vacuum - main jets #94 |
| Ignition: | CDI | CDI |
| Starting: | Electric | Electric |
| Max Power: | 50 hp / 36.5 kW @ 10500 rpm | 65 hp / 47.4 Nm @ 9000 rpm |
| Max Torque: | 3.6 kgf-m / 26 lb-ft @ 9000 rpm | 35.5 lb-ft / 48.1 Nm @ 8000 rpm |
| Clutch: | Wet multi disc | Wet- multiplate |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | Chain | #530 O-ring chain |
| Frame: | Tubular, double cradle (aluminium) | Double down tube, full cradle, Box section aluminum swing arm |
| Front Suspension: | Telescopic forks | Telescopic forks |
| Rear Suspension: | Swing arm | Dual shocks, Swinging arm |
| Front Brakes: | Single disc | 2X 260mm disc |
| Rear Brakes: | Single drum | Single 260mm disc |
| Front Tyre: | 100/90-16 | 3.25 H19 |
| Rear Tyre: | 120/90-16 | 3.75 H18 |
| Seat Height: | 770 mm / 30.3 in | 800 mm / 31.6 in |
| Fuel Capacity: | 15 Litres / 3.9 US gal | 15 Litres / 3.9 US gal |