| MODEL | KAWASAKI GPZ 305 BELT DRIVE 1983 |
| Year | 1983 |
| Engine Type | Four stroke, parallel twin, SOHC, 2 valves per cylinder |
| Displacement / Capacity | 306 cc / 18.7 cu in |
| Bore X Stroke | 61.0 x 52.4 mm |
| Compression Ratio | 9.7:1 |
| Cooling System | Air cooled |
| Max Power | 19.9 kW / 26.6 hp @ 10000 rpm |
| Max Torque | 25.5 Nm / 18.8 lb-ft @ 8500 rpm |
| Ignition | Magneto CDI |
| Induction | 2 x 32mm Keihin CVi carburetors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Forced feed lubrication |
| Gear Box | 6 Speed |
| Clutch | Wet clutch |
| Final Drive | Belt |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Telescopic forks |
| Rear Suspension | Swing arm |
| Front Brakes | 2 x disc |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 784 mm / 30.8 in |
| Wheelbase | 1355 mm / 53.3 in |
| Ground Clearance | — |
| Dry Weight | 147 kg / 324 lbs |
| Wet Weight | 160.6 kg / 354 lbs |
| WHEEL SPECS | |
| Front Tyre | 90/90-18 |
| Rear Tyre | 110/80-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 16.5 Litres / 4.3 US gal |
| Fuel Consumption | 65 mpg (average) |
| Top Speed | 162 km/h / 101 mph |
The GPZ 305, a 306 cc air-cooled SOHC parallel twin that Kawasaki sold as a sports machine in its air-cooled range. It was developed from the ER250 and took a Kevlar belt final drive in place of chain. Cycle World named it best Under 460 cc Street motorcycle in its 1983 Ten Best Bikes list, praising its handling, though it was short on low-rpm power.
