The Super 90 90 mm gun is a development of the earlier 90 mm F1 and F3 series, and is much more efficient, combining low weight with a high muzzle velocity. It fires APFSDS and fin-stabilised HE and HEAT projectiles and has a barrel length of 52 calibres as opposed to the 33 calibres of the earlier series.

The barrel and breech are manufactured from ESR steel and the vertical-wedge breech is inclined at an angle of 35° to the left to ease loading.

The breech mechanism is made up from modular assemblies and the recoil mechanism has been designed so that the subassemblies can be removed for maintenance without stripping down the complete gun. A thermal sleeve is fitted around the barrel. The muzzle brake is a single-baffle design.

This gun is now referred to by Giat Industries as the 90 mm CS 90 Gun Model F4 (CN 90 F4).

In production. Fitted to Diesel Division, General Motors of Canada MOWAG 8x8 Piranha vehicles for Saudi Arabian MODA (TS 90 turret), Renault VBC 90 (6 x 6) armoured car (TS 90 turret); Panhard ERC 90 Sagaie 1 (6 x 6) armoured car (TS 90 turret); AMX-10 PAC 90 fire support vehicle (TS 90 turret) and SAMM TTB 190 (in service with Gabon on Sagaie 2 armoured car). By early 1999 it is estimated that well over 500 of these turrets had been built for the home and export markets.