The article explores whether the interstate dynamics of the BRICS can activate those processes of convergence of politicalregimes and practices known as “democratic contagion.” As this contagion was experienced during the “third wave” ofdemocratization, mainly because of homogeneity among states and structural conditions for democratic attraction, theBRICS are not likely to repeat these dynamics. On the contrary, the only real constitutional homogeneity among the BRICScountries is the standard of non-interference in the internal affairs of each member. Non-interference also means abstainingfrom any initiative to condition the transformation of political regimes in consideration of the same interstate cooperation. Thedynamics of the BRICS shows that different political regimes can promote institutionalized forms of interstate cooperationwithout any mutual contamination at the constitutional level. The theories of “transition” and “democratic contagion” areinsufficient to understand these dynamics in the context of the BRICS; for this reason, the theory of democratic transitioncannot provide an adequate analysis of BRICS. With its members “split in unity,” as an institution the BRICS suggests anevolution toward a model of “not eurocentric dependence” that can overcome the “peripheral realism” of the role of eachstate in its own foreign policy.