The GT 550 had
much less success than her sister the GT 380, and yet it did not miss a charm; perhaps because of its bastard cubic capacity. It should be specified
that it had a hard competition with the Kawasaki 500 H1 or the Honda 500 Four.
| Engine type : | 2-stroke, in line 3-cylinder, piston reed valve, air-cooled " Ram-Air-System". |
| Capacity : | 543 cm3 |
| Bore x Stroke : | 61 x 62 mm |
| Max power/rpm : | 50 HP at 6500 rpm |
| Max torque : | 6.1 m.kg at 5000 rpm |
| Compression ratio : | 6.8 : 1 |
| Fuel system : | 3 Mikuni carburettors - Type : VM 28 SC |
| Ignition : | battery - 12 V |
| Gear box : | 5 speed |
| Tyres : | Front : 3.25 X 19" – Rear : 4.00 X 18" |
| Weight (full) : | 215 kg |
| Max speed : | 175 km/h |
