DJM-900NXS2 measures 333 mm in width,418mm in depth, while the DJM-900NXS measures 331 mm in width, 409mm in depth.

You may be able to use DJM-900NXS's flight case by rearranging its inner cushion.

However, please note that use of the DJM-900NXS's flight case is not guaranteed by Pioneer DJ.