This exclusive version of Siux Electra ST4, created in collaboration with Franco Stupaczuk, is designed for advanced and tournament players who have the highest demands on their equipment. With a special emphasis on power, precision, and spin, this racket is crafted for the technically skilled all-round player. Siux Electra ST4 Rulo has a medium balance and a hybrid-shaped head profile, providing an excellent combination of control and power. Compared to Siux Electra ST4 Stupa Pro, the Rulo model is somewhat stiffer, offering a firmer feel and more direct feedback on hits, reminiscent of the ST3 version. The 15K carbon fiber surface ensures explosive energy with every hit, while the 3K carbon fiber frame offers low weight combined with high stiffness. The hard EVA core provides quick response and impressive power without compromising ball feel. Finally, the racket's glossy surface and sandpaper-like texture contribute extra grip on the ball – ideal for spin-heavy shots like viboras and bandejas.