The new Beast XP string is the world’s first thermo-poly string, featuring a secret alloy additive, that delivers improved trajectory control and feel for extreme precision.
A new level of ferocity has arrived on the tennis court, direct from the only company that can deliver it — Prince, taking tennis further for over 40 years.
EXTREME PRECISIONWatch a video of a tennis ball hit a racquet at 5,000 frames per second, and you get an idea of what it takes to make a precision string. Prince engineers did exactly that, thousands of times on a multitude of racquets, using military-grade video technology to develop the most precise, durable and consistent string ever created.
We analyzed ball trajectories, rebound velocities, spin rates and impact angles. But lab tests mean nothing without real-world results. That’s why we play-tested Beast XP on the court, making sure it delivered on every swing.
The result is a thermo-poly string, fine-tuned to deliver power, performance and precision that’s consistently ferocious. On every racquet. On every point. In every game.





Before Beast XP strings were released to the public, thousands of sets of strings were evaluated around the world by competitive tennis players on all levels. The feedback has been overwhelmingly positive. Beast XP simply outperforms all other polyester strings with the best possible combination of control, power, durability, spin and tension.
Upload your testimonial to YouTube and send us the link at beastxp@princesports.com to be featured here and receive free gear!
Click here to find out where you can buy Beast XP.