Improved combustion chamber, turbine blade cooling; used in Dassault Mirage IV bombers
Atar09K-50
improved Atar 9C with a redesigned turbine and upgraded compressor resulting in improved fuel consumption and thrust; used in Dassault Mirage F1 and Mirage 50.
Atar Plus
Joint development with ITP and Denel, new compressor, new turbine, new electronics.