Boeing F-15EX Eagle II vs Korea Aerospace Industries (KAI) KF-21 Boramae
Full specs: Boeing F-15EX Eagle II Korea Aerospace Industries (KAI) KF-21 Boramae
Boeing F-15EX Eagle II and Korea Aerospace Industries (KAI) KF-21 Boramae are both fighter aircraft, compared here on public specifications. The Boeing F-15EX Eagle II leads on weapons payload (13,380 vs 7,700 kg).
Compare systems side by side
Search above to add up to five systems. You’ll get a per-spec winner, relative bars, a normalized spec profile and an honest verdict, every number from public sources.
Building a fleet? Try the Force Builder →
Full data
Full spec sheet
| Performance | ||
| Max speed (km/h) | 2,660 km/h ✓ | 2,200 km/h |
| Max speed (Mach) (Mach) | 2.5 Mach ✓ | 1.81 Mach |
| Range (km) | 3,900 km ✓ | 2,900 km |
| Combat radius (km) | 1,200 km ✓ | 700 km |
| Service ceiling (m) | 19,200 m ✓ | 16,700 m |
| Rate of climb (m/s) | 254 m/s | N/A |
| Thrust-to-weight | 1.06 ✓ | 1 |
| Firepower | ||
| Hardpoints | 12 ✓ | 10 |
| Weapons payload (kg) | 13,380 kg ✓ | 7,700 kg |
| Physical | ||
| Length (m) | 19.43 m | 16.9 m |
| Empty weight (kg) | 14,300 kg | 11,700 kg |
| Combat weight (kg) | 36,700 kg | 25,600 kg |
| Crew | 2 | 1 |
| Propulsion | ||
| Thrust (kN) | 129 kN ✓ | 98 kN |
| Program | ||
| Unit cost (USD) | $90,000,000 | $65,000,000 ✓ |
| Units built | 30 ✓ | 20 |
| Operator countries | 1 | 2 ✓ |
Frequently asked questions
Which is faster, Boeing F-15EX Eagle II and Korea Aerospace Industries (KAI) KF-21 Boramae? +
The Boeing F-15EX Eagle II is the fastest of the 2 compared here, at 2,660 km/h.
Which has the longer range? +
The Boeing F-15EX Eagle II has the longest range at 3,900 km.
Which carries the larger weapons payload? +
The Boeing F-15EX Eagle II carries the largest weapons payload at 13,380 kg.
Which is cheaper? +
The Korea Aerospace Industries (KAI) KF-21 Boramae has the lower public unit-cost figure at 65,000,000 USD. Treat this as directional, defense pricing varies by contract and configuration.
Which has the higher max speed (mach)? +
The Boeing F-15EX Eagle II has the higher max speed (mach) at 2.5 Mach.
Which has the higher combat radius? +
The Boeing F-15EX Eagle II has the higher combat radius at 1,200 km.
Is the Boeing F-15EX Eagle II better than the Korea Aerospace Industries (KAI) KF-21 Boramae? +
On the public specs we track, the Boeing F-15EX Eagle II leads on 6 of 6 headline metrics, see the full spec sheet for the metric-by-metric breakdown.
Where does this comparison data come from? +
Every figure in the table is sourced from public manufacturer pages, defense-ministry releases and reference publications, and is verifiable on each system's spec page. WeaponSpecs does not accept vendor placement.
Keep exploring
