The family of turrets is used on light armored vehicles and supports a variety of weapons systems, including rapid fire cannon, a co-axial machine gun and anti-tank guided missiles.
The companies said the turret systems will be offered to military customers in Africa.
"Teaming with and supporting the growth of local companies is an important strategy for our business," said Johan Steyn, managing director, BAE Systems Land Systems South Africa.
"SITNO is a valuable partner for us in this region and this partnership will allow us to offer more customization and affordability for our customers."
Added Ludovit Cernak, member of the SITNO board in Slovakia: "This collaboration combines comprehensive knowledge and state-of-the-art technology of our two companies.
"This project not only delivers a competitive and modern product to our customers, but also demonstrates the shift in the market in modernization of ex-Soviet combat systems."
The companies said a vehicle interface enables integration of the system on existing vehicles.