Fifth Third Bank is expected to end its long-running sponsorship of RFK Racing after the 2026 NASCAR Cup Series season, according to sources who spoke with Sports Business Journal. The reported decision would end a 15-year partnership that began in 2012. The bank has mainly supported the team’s No. 17 Ford, which has featured several drivers over the years. The expected departure comes as RFK Racing prepares for major changes ahead of the 2027 N…