Tennis Warehouse lists Gosen AK Pro CX 17 at 1.24 mm in a 12.2 m set. Its construction description identifies an Umishima monofilament core surrounded by heat-resistant polyamide fibres, and the product overview treats it as a non-polyester string. The construction term monofilament therefore needs to be read with the composition field when selecting this product.
The retailer’s playtest description discusses crisp feedback, comfort and control on longer swings. Turn that assessment into a personal question: can you produce the depth you want with your normal swing? Choose a shot to compare with your present string, then record what changes. Separating clean central contacts from rushed defensive contacts can make the notes more useful.
The number 17 also needs its millimetre value. The same product page lists comparison options Gamma TNT2 17 at 1.27 mm and Head Velocity MLT 17 at 1.25 mm, alongside AK Pro CX 17 at 1.24 mm. Tennis Warehouse’s material-and-gauge guide explains that gauge labels vary between companies. Writing the actual diameter next to each candidate keeps the comparison precise.
For the initial comparison, retain the same racquet and grip setup, and record string model, diameter, installed tension and replacement date. Choose tension with your stringer using the frame manufacturer’s range and your existing setup. Copying another player’s tension also brings assumptions about a different frame, pattern and swing. Fewer simultaneous changes give the next decision a clearer basis.
Our proposed log contains playing time, any movement changes needed to control depth, surface wear and the reason for replacement. Note whether you broke the string, lost reliable placement or disliked its response. Playing time beside the replacement reason is a more useful cost record than simply observing whether the string remains intact.
The question for adding AK Pro CX 17 to a shortlist is whether this non-polyester construction preserves the depth and feedback you want from your normal swing. Establish the response and useful time from one set before deciding how much more to buy. Compare that record with the exact model and diameter of your current string.
