Vortex VTZ KZ

The Vortex VTZ engine, too, dedicated to the KZ and KZ2 classes, comes from the winning RTZ, world champion in 2021 and vice world champion in 2022. The most obvious technical evolution made concerns the cooling of the engine crankcase, previously air-cooled, now water-cooled.
But that's not all, because even the muffler, specific to this model, has now a new design. Unchanged, however, compared to the RTZ model, is the length of the connecting rod (115 mm).