AERO-BODY:
MotoGP™ manufacturers are allowed new aerodynamic packages for each year, plus one upgrade at any point throughout the season. These upgrades are solely for each rider and not for teams or factories as a whole. There are four aero bodies: front fairing (including the wings), rear-wheel (includes spoon and wheel covers), front mudguard & front forks, and seat unit.

Source: MotoGP.com – Read Full Article Here