FMI notes that the Aircraft Belly Fairing Modification Kits market was valued at USD 223.4 million in 2025. Revenue is expected to reach USD 238.4 million in 2026 and USD 456.0 million by 2036. Aerodynamic smooth-belly retrofit kits are poised to lead by Kit Type with a 34.0% share in 2026, while General aviation/piston aircraft are estimated to lead by Aircraft Platform through 2036.