What is the KF-21 Boramae? South Korea’s 4.5-Generation Fighter Explained
The KAI KF-21 Boramae (“Fighting Hawk”) is South Korea’s indigenous 4.5-generation multirole fighter, developed by Korea Aerospace Industries with Indonesian partnership. The first prototype flew in July 2022, with serial production now ramping up.
Design
While it resembles the F-22 externally, the KF-21 uses a conventional external weapons configuration. Block I focuses on air-to-air missions; Block II adds full air-to-ground capability, and internal weapons bays are planned for future variants.
Avionics
The KF-21 features a domestically developed AESA radar by Hanwha Systems, an Infrared Search and Track (IRST) system, and a Korean-built electronic warfare suite.
Armament
It can carry Meteor BVR missiles, IRIS-T short-range AAMs, and indigenous precision-guided munitions. Total weapons capacity exceeds 7,700 kg across 10 hardpoints.

Industrial Significance
The KF-21 reduces South Korea’s reliance on U.S.-made fighters and positions Seoul as a credible global fighter exporter alongside its tank, artillery, and shipbuilding sectors.
Conclusion
The KF-21 Boramae is a strategic bridge between fourth- and fifth-generation airpower and a flagship of South Korea’s defense aerospace industry.