The Kurnass 2000 was an upgrade package for the F-4E Phantom II by the IAF. The upgrade focused on the aircraft armament and electronic systems. While upgrades to the power plant were proposed, with the introduction of more powerful engines, this modification was not installed to reduce costs. The Kurnass 2000 received a new radar, the AN/APG-76, that was far superior to the AN/APG-120 used by the standard F-4E. It also was equipped with the ASX-1 TISEO targeting system which allowed Raphael Popeye ASMs to be launched. More advanced avionics and targeting systems for anti-tank munitions and guided bombs were installed, as well as the ability to carry the AIM-9L and Python 3 missile.

Introduced in Update "Sky Guardians", the Kurnass 2000 is an Israeli upgrade of the venerable F-4E Phantom II. It looks and flies almost identically to the standard F-4E, however its air-to-air armament is now drastically improved and rounded out by the all-aspect AIM-9L Sidewinder and Python 3 for closer engagements. For anti armour situations, it has access to the IR guided AGM-65D Maverick and new Paveway II laser guided bombs, coupled with its Pave Spike targeting module. The Kurnass 2000 is a multirole aircraft with impressive systems and weapons, only held back by the performance of its old airframe compared to 4th generation opponents like the MiG-29 and F-16A. The Kurnass 2000 also features an EEGS for its cannon, like the one featured in all 4th generation fighters, it's very good for gun kills, especially in simulator battles. It also has a very powerful radar (although no radar-guided missiles) and can carry a total of 290 countermeasures (200 are external BOL pods and can only carry flares).