Luxilon polyester

Luxilon 4G

Co-polyester monofilament with poly-ether-ether compound

Data verified January 2025
$21-22 Per Set
16, 16L Gauges
high Stiffness
14+ Min Age

Performance Ratings

power 6/10
spin 8/10
control 9/10
comfort 5/10
durability 9/10
tension Maintenance 10/10

Lab Test Data

Stiffness 287 lbs/in
Tension Loss 21%
Spin Potential 4.5

Junior Player Guide

For Parents
Arm Friendliness Low
Cost Effectiveness Great value

Recommended Level

advancedelite

Tension for Juniors

48-52 lbs for juniors. Better tension maintenance means more consistent feel over time.

Gauge Recommendation

16L (1.25mm) is most versatile.

Overview

Luxilon 4G was designed with one goal: better tension maintenance than ALU Power. Made with Luxilon's magical poly-ether-ether compound, 4G strings feature best-in-class durability, control and tension maintenance. Unlike many polys that go dead after 8-10 hours, 4G keeps its feel and control far longer. Its tension holding score of 100% isn't marketing hype - it's backed up by lab data. Control is where 4G shines, making it a workhorse that's reliable, consistent, and built for precision.

Best For

  • ✓ Control-oriented advanced juniors
  • ✓ Players who hate restringing frequently
  • ✓ Players who value precision over power
  • ✓ Those who find ALU Power loses tension too fast

Not Ideal For

  • ✗ Players needing power assistance
  • ✗ Anyone with arm sensitivity
  • ✗ Beginners or early intermediates
  • ✗ Players wanting a lively, powerful feel

Pros

  • + Excellent tension maintenance (lab-verified best in class)
  • + Outstanding control
  • + More durable than ALU Power
  • + Consistent feel over time
  • + Great spin for a control-focused poly

Cons

  • − Stiff - not the most comfortable
  • − Lower power level than ALU Power
  • − Can feel dead to some players
  • − Demanding on technique
  • − Premium price point

Specifications

Type polyester
Construction Co-polyester monofilament with poly-ether-ether compound
Gauges 16, 16L
Colors Gold, Black
Set Price $21-$22
Reel Price $170-$200

Used By

Stefanos TsitsipasGrigor DimitrovAlex de MinaurFeliciano Lopez (former)

Hybrid Setup Ideas

  • Wilson NXT crosses for comfort
  • Natural gut mains for power/comfort blend
  • Tecnifibre X-One Biphase crosses

Stringer Notes

No pre-stretch needed due to tension stability. String at normal tension - it holds better than most polys. Recommended restringing every 12-15 hours for consistent feel.

Break-in Period

Minimal. Plays consistently from the start.

When to Replace

Every 12-15 hours for consistent feel, or when strings notch deeply. Tension stays playable much longer than most polys.

Similar Strings

luxilon alu powerbabolat rpm blasttecnifibre black code

Sources

Data verified January 2025

Looking for arm-friendly options?

View Arm-Friendly Strings →