What octane goes in a 2004 harley Davidson 883 sportster?

A 2004 Harley Davidson 883 Sportster typically requires regular unleaded gasoline with an octane rating of 87. However, using premium fuel with an octane rating of 91 or higher can enhance performance and reduce the likelihood of engine knocking, especially if the bike is modified or used in demanding conditions. Always refer to the owner's manual for specific recommendations.