Tecnifibre X1 Biphase 1.30mm 12.2m set Red

Tecnifibre X-One Biphase 1.30mm 12.2m Set Red

The Tecnifibre X-One Biphase is one of the most powerful and comfortable multifilament strings on the market. Designed for demanding players seeking premium feel and performance, it delivers the benefits of natural gut while offering greater durability and resistance to humidity.

Composed of more than 1,400 microfilaments, this high-performance string combines:

• 50% Elastyl® fibres for maximum power and elasticity
• 50% H²C fibres for superior tension maintenance

The exclusive Biphase pre-stretching process enhances tension retention by stretching the string along its entire length during production. This unique manufacturing method creates the distinctive “notching” colour variation, giving X-One Biphase its recognizable premium appearance.

Each filament is impregnated throughout with PU 400 liquid polyurethane, the highest elasticity grade used in racket sports (400% elasticity). This ensures exceptional comfort, outstanding power, and long-lasting playability. The string is also finished with a SPL (Silicone Pyrogene Lubritec) coating to improve snap-back and promote spin generation.

This 1.30mm gauge provides added durability while maintaining excellent feel and comfort, making it ideal for strong intermediate to advanced players who prioritise comfort, touch, and power. Not recommended for frequent string breakers (less than 10 hours of play).

Key Features

• Premium multifilament construction (1,400+ filaments)
• 50% Elastyl® fibres for explosive power
• 50% H²C fibres for improved tension stability
• Exclusive Biphase pre-stretch process for superior tension retention
• PU 400 polyurethane impregnation for exceptional comfort
• SPL finish for improved snap-back and spin
• Gauge: 1.30mm
• Length: 12.2m set (trim)
• Recommended tension: 22–25 kg
• Maximum tension: 32 kg
• Colour: Red
• Range: X-One Biphase
• String Type: Multifilament

Designed, developed, and manufactured in France, Tecnifibre multifilament strings are globally recognised for their comfort, power, and long-lasting performance. The X-One Biphase remains a benchmark for players looking to unlock maximum potential with premium feel and elegant performance.