| MODEL | KAWASAKI H1 500 MACH III 1972 - 1973 |
| Year | 1972 - 1973 |
| Engine Type | Two stroke, transverse three cylinder, piston valve |
| Displacement / Capacity | 498 cc / 30.4 cu in |
| Bore X Stroke | 60 x 58.8 mm |
| Compression Ratio | 6.8:1 |
| Cooling System | Air cooled |
| Max Power | 45 kW / 60 hp @ 7500 rpm |
| Max Torque | 56 Nm / 42.3 lb-ft @ 7000 rpm |
| Ignition | CDI |
| Induction | 3 x Mikuni VM28SC carburettors |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | Injectolube, automatic pressurised injection |
| Gear Box | 5 speed |
| Clutch | Wet multi-disc |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Double tubular steel cradle |
| Front Suspension | Telescopic hydraulic forks |
| Rear Suspension | Dual shocks, swing arm |
| Front Brakes | Single 296 mm disc |
| Rear Brakes | 180 mm drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | 1400 mm / 55 in |
| Ground Clearance | — |
| Dry Weight | 174 kg / 384 lb |
| Wet Weight | 188 kg / 414 lb |
| WHEEL SPECS | |
| Front Tyre | 3.25-19 |
| Rear Tyre | 4.00-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 15 Litres / 4.0 US gal |
| Fuel Consumption | — |
| Top Speed | 200 km/h / 124 mph |
The H1 was Kawasaki's 500 cc air-cooled two-stroke triple, a fast but smoky roadster that competed with Honda and Suzuki rivals of the late 1960s. This 1972-73 Mach III carried electronic ignition from 1970 onward and a restyled look in 1973. Production ended in the mid-1970s as emissions rules tightened, and the 500 KH replaced it in 1976.
