I can't say for sure. Lots of people use higher octane than is required and swear the engine runs better and improves mileage. Others say it ain't so. I use 87 octane in the Ninja 300, but premium in my other 3 bikes because they all require 90 octane (or higher) which means premium...93 octane here. Super is 89 octane. If I develop any detonation problems or dieseling, I might try the 89 octane, but so far the bike runs great on 87 octane. I buy my gas from Murphy oil associated with Walmart to get it 3 cents cheaper than anywhere else. Seems like good gas.