As its name indicates, the Kube
model is shaped like a cube. Its shape makes it possible to have slightly better performance at high revs. From the point of view of fluid dynamics, it can be said that the Kube has a more staticflow, not as strong the Shark.
The airbox has a maximum volume of 2100 cc, or the maximum allowed by the regulations.
Even the intake silencer
tubes are the maximum diameter allowed: 22.95 mm.
The length, on the other hand, is as short as possible, so as to avoid losing flow: 90 mm.
You find the Kube Homologation here