
The Luxilon ALU Power 125 Silver is the most iconic and widely used string on the ATP and WTA professional tours. It is the "gold standard" by which all other co-polyesters are measured, known for its unique ability to provide explosive power while maintaining surgical, "dead" control.
The 1.25 mm (17G) gauge is the flagship thickness, offering the optimal balance of durability, feel, and spin potential.
Performance Profile
- Aluminum-Infused Construction: Unlike standard polyesters, ALU Power is impregnated with aluminum fibers. This unique process gives the string its signature "crisp" and slightly metallic feel, providing a very distinct "snap" at impact.
- The "Champion’s" Response: It manages a rare feat in string technology: it is stiff enough to provide a predictable launch angle for big hitters, yet elastic enough to offer a "lively" energy return that helps the ball penetrate through the court.
- Maximum Snap-Back: The smooth surface and high-grade co-polymer allow the strings to slide across one another and snap back into place with elite efficiency. This movement is the mechanical key to generating the heavy topspin and "dip" required for the modern game.
- Low Friction & Durability: Despite being a thinner 17G string, it is surprisingly resistant to "notching," ensuring that the spin potential remains high throughout the string's playability window.
Best Suited For
- Advanced & Professional Players: Designed for those with fast, full swings who generate their own power and require the string to provide stability and precision.
- Hybrid Setup Enthusiasts: This is the most popular main string for hybrids in history. When paired with a natural gut cross (the "Champion's Choice" setup), it creates a legendary blend of feel and spin.
- Aggressive Baseliners: Specifically players who want to hit a "heavy" ball that jumps off the court and pushes opponents behind the baseline.
- Precision Seekers: Players who value a "connected" sensation and need to know exactly where the ball is on the string bed.
Features
- Color: Silver.
- Gauge: 17 G / 1.25 mm.
- Length: 40 ft / 12.2m.
- Shape: Round (Smooth).
- Key Benefits: Power, Control, and Tour-Level Feedback.
- Material: Co-polymer (Poly-ether-ether) + Aluminum Fibers.
