Tecnifibre 4S 18/1.20 String — image 1

Tecnifibre

TBC4S18

Tecnifibre 4S 18/1.20 String

Line · 4S

$12.95

Reference price · as of June 2026 · not a live offer

The name of this string has changed from Black Code 4S to 4S. Same string, different name. With 4S Tecnifibre gives big hitters a durable, low-powered co-poly with MASSIVE spin potential, impressive tension maintenance and great feel (especially for a firm monofilament). Boasting a square profile and sharp edges, this string puts a very tight grip on the ball. Topspin players will be able to hit high-arching, spin-loaded balls that come down sharply and explode off the court. For this string Tecnifibre uses Thermocore Technology , a multi-stage heating technique designed to soften the structure and reduce harsh impact vibrations. This helps explain why our playtesters were so impressed with the comfort level. Players looking for a durable co-poly with phenomenal control and spin-potential should definitely give this one a serious look. Try this thin 18g for more spin and feel than the other gauges.

String Specs

Gauge
18/1.20mm
Length
40ft/12.2m
Composition
Co-polyester Monofilament (w/Thermocore Technology)
Color
Black