$12-16 Per Set
16, 17 Gauges
medium Stiffness
10+ Min Age

Performance Ratings

power 7/10
spin 7/10
control 8/10
comfort 8/10
durability 6/10
tension Maintenance 7/10

Junior Player Guide

For Parents
Arm Friendliness Good
Cost Effectiveness Great value

Recommended Level

intermediateadvancedelite

Tension for Juniors

52-58 lbs for juniors. Very arm-friendly with good control.

Gauge Recommendation

17 (1.24mm) for best feel. 16 for more durability.

Overview

Gosen AK Pro CX uses the unique Umishima (marine island) structure developed to enhance sharpness and high resilience. The CX fiber complements the nylon in durability and tension maintenance, creating the almost perfect tennis string with crisp and soft pocketing feel combined with polyester-like control. TW playtesters found it easy to keep the ball in play on full swings while maintaining comfort - impressive for a string with this much control.

Best For

  • Players wanting control with comfort
  • Those with arm sensitivity
  • All-court players with longer strokes
  • Players wanting crisp but soft feel
  • Juniors needing arm protection

Not Ideal For

  • Heavy string breakers
  • Maximum spin seekers
  • Budget-conscious players

Pros

  • + Unique Umishima structure for crisp feel
  • + Excellent balance of power and control
  • + High spin potential for a multifilament
  • + Good tension maintenance
  • + Very arm-friendly
  • + Plush but firm feel

Cons

  • Premium priced
  • Not as durable as polyester
  • Not widely available in all markets

Specifications

Type multifilament
Construction Umishima structured monofilament surrounded by heat resistant polyamide fibers with CX composite micro fiber
Gauges 16, 17
Colors Natural
Set Price $12-$16
Reel Price $120-$150

Used By

Various Japanese tour playersUsed by players worldwide seeking control and comfort

Hybrid Setup Ideas

  • Poly mains with AK Pro CX crosses for comfort
  • Luxilon ALU Power mains + AK Pro CX crosses

Stringer Notes

Umishima construction - handle gently. Static stiffness: 0.72 kg/mm. Crisp feel without harshness.

Break-in Period

Minimal. Plays great from first hit.

When to Replace

Every 8-10 weeks or when comfort drops.

Sources

Data verified January 2025

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