Tecnifibre Black Code 4S review

Gauge: 1.25mm / 17

Tension: 21/20 kgs (~46 / 44 lbs) for clay court at moderate temperature, via Wise Tension Head, slowest speed, constant pull

Racquet: Wilson Pro Staff RF97 Autograph

Estimated number of ball contacts to date: 750



Stringing: String feels quite soft, not as edgy as the Dunlop Black Widow, somewhat similar to the WEISSCannon Black5Edge, not as soft as the red Kirschbaum Pro Line II.

Playing: Stiffer than expected after the stringing experience. String did settle in after a couple of weeks on the racquet, making it a bit softer. Good ball grip, but not too crazy. Subjectively less spin production than the Tour Bite or Cyclone, but more than the RPM Blast. 

Personal takeaway: In the current setup still too stiff for me. Will stick with the orange Cyclone for now, and might give the 4S another try @ 20/19 kgs sometime. 

General recommendation: Might do well in a powerful frame, such as the Babolat Pure Drive or the Yonex Ai or DR series, strung in the low 20 kgs / high 40 lbs. A dampener should take some of that stiffness away. Do note that you pay a ~50% premium over the Cyclone, which may be offset to some extend by better tension maintenance. 

Related: Comparison of interesting strings in 2016