TRU PRO FIREWIRE Tennis String 12.2 m / 40 ft Set

Professional-grade performance with exceptional value

The TRU PRO T1 Firewire Tennis String 12.2m / 40 FT Set is engineered for players who want maximum spin and aggressive shot-making without sacrificing control. Recognised as one of the top spin-performing strings in the market, Firewire delivers exceptional ball bite and explosive spin potential for modern, high-intensity play.

Its triangular-shaped profile grips the ball on contact, allowing players to generate heavy topspin and sharper angles with confidence. Despite its spin-focused design, Firewire maintains a crisp yet arm-friendly feel, combined with excellent tension stability to ensure consistent performance over time.

Key Features

• Triangular profile for extreme ball bite and spin generation
• Rated among the top strings for spin performance
• Crisp, responsive feel with controlled power
• Excellent tension stability for long-lasting consistency
• Designed for aggressive baseline play and modern spin-heavy styles

Specifications

• Length: 12.2m / 40ft
• Gauges:
  • 16g (1.30mm)
  • 17g (1.25mm)
  • 18g (1.20mm)
• Colour: Red or Black

Performance Characteristics

• Power: Medium
• Control: High
• Comfort: Medium
• Durability: High
• Tension Stability: High
• Spin Potential: Very High
• Feel / Playability: Crisp & Aggressive

Who It’s For

• Players experienced with polyester strings
• Players seeking extreme spin and ball bite
• Intermediate to advanced players (UTR 2.5–9.5 / NTRP 3.0–5.0)
• High-level junior players (ages 12–15)
• Players with aggressive, spin-heavy playing styles

Why Choose TRU PRO

TRU PRO strings are designed for players who demand performance, precision, and consistency. T1 Firewire stands out as a spin-dominant string, delivering the bite, control, and confidence needed to take your game to the next level.