One month after adjusting the balancing regulations in its Next-Generation Supersport class, MotoAmerica has made another adjustment to the technical rules governing the class just ahead of this weekend’s event at WeatherTech Raceway Laguna Seca.
Prior to the round at Road America in June, MotoAmerica FIM/AMA North America adjusted the rules for the Ducati Panigale V2 and the Suzuki GSX-R750, detuning both slightly with new required mapping in their spec Engine Control Units (ECUs).
Now on the Thursday prior to a race event, MotoAmerica FIM/AMA North America has decided to allow the Yamaha YZF-R6 to have ported and polished cylinder heads, including the combustion chamber, and the announcement is effective immediately.
Below is the Technical Bulletin issued by MotoAmerica FIM/AMA North America today, July 6.
