Firestorm 17G/1.25 String Metallic Gold

Firestorm 17G/1.25 String in Metallic Gold is the string of choice for Matteo Berrettini and our top-of-the-line string. Marketed as X-treme Power, it is a favorite among ATP players who use Signum Pro, and it is built to bring that level of performance to your own game.

Firestorm combines explosive power with lasting durability. It also holds tension well, so your string bed keeps its feel from the first hit to the last.

• X-treme Power: Strong, dynamic power on every swing.
• Durability: Built to hold up through demanding play.
• Tension Maintenance: Stays consistent for longer.
• Feel: A response that is well worth trying.
• Specs: 17G / 1.25, Metallic Gold.

Players have given us excellent feedback on Firestorm, and we believe it is a must-have for any tennis enthusiast. Add it to your racquet and see what a pro-level string can do for your game.