In the Color string percolation model, the transverse momentum (pT) of the particles created is closely related to the temperature extracted from the pT spectrum reported by collider experiments. As a first approach, the pT spectrum is described as a thermal distribution, which fails to accurately reproduce the data regarded to the production of high-pT particles. In this work, we introduce a nonextensive framework to describe the pT spectrum on the entire reported pT range, carrying out corrections to the estimations of the temperature due to the production of high-pT particles, and then, modifying the phenomenology of the Color String Percolation Model. These corrections help determine the conditions for quark–gluon plasma (QGP) formation, including finite-size effects.