The owners manual says that the Raptor is designed to run on regular unleaded gasoline with a pump octane number ([R+M]/2) of 86 or higher, or research octane number of 91 or higher.

 

86-87 octane is typically your regular pump gas. 99.9% of the time this octane level will be plenty sufficient for a stock engined bike. Bolt ons like a pipe or filter changes should not and will not impact compression and therefore dont have an impact on the required octane level.

Premium pump gas of 91-94 octane is overkill and completely unecessary on a stock bike. Because of manufacturing variations and condition variations some bikes may run better on slightly higher octane, typically the midgrade level of 89 octane.