The 19-year-old Gibbs from Charlotte, North Carolina, led five of 48 over-scheduled laps as he executed a bold final lap pass on Larson for his eighth Xfinity career victory.
The reigning ARCA Menards Series East champion from Johnston, Iowa, will commence his Xfinity Series debut with Joe Gibbs Racing at Road America in July.
After qualifying on the pole, Joe Gibbs Racing driver, Sammy Smith, in his second season with the team, scored his first ARCA Menards East Series victory at Five Flags Speedway in Pensacola, Florida.