Dominate the court with the Siux Electra Stupa Pro ST4 2025 — the latest evolution of Franco Stupaczuk’s professional racket. Designed for advanced and competitive players, it features a hybrid shape that blends power and control, a 15K carbon face for explosive precision, and a hard EVA core for unmatched response and stability. The rough-textured surface enhances spin and shot control for a truly elite performance.