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Tecnifibre X-One Biphase 18G Tennis String

$14.21 when buying 4+!
Tecnifibre X-One Biphase 18G Tennis String offers high heat capacity that creates the ultimate performance of power and feel. Playability similar to natural gut.

Composition: NRG2 Micro filaments with polyurethane.The BIPHASE treatment extends string life by 20% . Biphase increases spin and performance.

  • Length: 40ft. (12m)
  • Gauge: 18 (1.18mm)
  • Colors: Natural, Red

Increased POWER and FEEL

Review Summary (Based on 2 Reviews)


5 Stars Perfect

from wrote (May 31, 2015):

The best synthetic gut tennis string which I have played

5 Stars Best feel of them all

from IA wrote (April 17, 2014):

I've tried out all kinds of multifiliments (nxt, sensation, nrg2, silent partner) and none has the feel of the biphase. I think it actually has better feel than even a nat gut (Wilson). I have used 18g biphase both in a hybrid and by itself. I loved the feel of it by itself, but durability is a problem. One set I had broke 3 games into a match. So now I use it with black code 18g in a hybrid and I love it!

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