Last updated: February 18, 2026
✈️ Aircraft Specifications
| Length | 16.9 m (55.4 ft) |
| Max Speed (Mach) | 1.81 |
| Max Speed (km/h) | 1,920 km/h |
KAI KF-21 Boramae
South Korea 4.5-generation fighter, the KF-21 Boramae (Fighting Hawk) is one of the newest combat aircraft in the world. It represents Korea ambitious leap into advanced fighter development.
🇰🇷 Korea Ambition
Developed primarily by Korea Aerospace Industries with Indonesian partnership, the KF-21 first flew in July 2022. While classified as 4.5-gen (external weapons carriage in Block I), future Block III variants will feature internal weapons bays, approaching 5th-gen stealth capability.
📋 Specifications
- Max Speed: Mach 1.81 (1,920 km/h)
- Range: 2,900 km
- Engines: 2x General Electric F414-GE-400K
- First Flight: 2022
- Planned: 120+ for ROKAF
- Country: South Korea
🎬 Video
Frequently Asked Questions
How fast is the KF-21?
The KF-21 has a top speed of Mach 1.81 (1,200 mph / 1,930 km/h).
Is the KF-21 a 5th-generation fighter?
Classified as 4.5-generation. It has some stealth features but currently carries weapons externally. Block 3 with internal bays is planned.
How many KF-21s have been built?
6 prototypes. South Korea plans 120, Indonesia 50.
When will the KF-21 enter service?
First flight July 19, 2022. Expected to enter South Korean service around 2026.
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