The contact owns a 2023 Harley-Davidson Sportster RH1250S. The contact stated that while while driving at 75 MPH, the vehicle lost power and he observed a loud popping noise emanating from the exhaust pipe. On another occasion while driving at 60 MPH, the vehicle lost power and the contact observed flames emanating from the plastic edge of the right front of the seat. The vehicle was steered off the highway and the flames were distinguished by the contact. The vehicle was towed to a dealer and they could not replicate the failure. The manufacturer was notified of the failure. The failure mileage was 13,350.