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Gosen

Polylon PolyBreak 17 (1.24)

Polyester Gauge 17 1.25 mm In production

Lab measurements for Gosen Polylon PolyBreak 17 (1.24), ranked against all 789 strings in the database. Every figure below is a testing-machine result at a fixed reference tension, not a playtest opinion.

Measured values

Stiffness

196lb/in

lower = softer, kinder on the arm

Tension loss

49%

lower = stays where you strung it

Energy return

85%

higher = livelier, more free power

Spin potential

4.2

higher = more spin off the string bed

Ball bite

0.436COF

higher = grabs the ball harder

Snapback

0.104COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 196 lb/in · 64th pct

Stiffer than 64% of strings tested.

Tension loss 49 % · 87th pct

Sheds more tension than 87% of strings tested.

Energy return 85 % · 19th pct

Livelier than 19% of strings tested.

Spin potential 4.2 · 35th pct

More spin potential than 35% of strings tested.

Ball bite 0.436 COF · 48th pct

Grips the ball harder than 48% of strings tested.

Snapback 0.104 COF · 68th pct

More string-on-string friction than 68% of strings tested.

Strings that play like this

Closest matches across stiffness, tension loss, energy return and spin potential.

Kirschbaum Pro Line I 18L (1.15) 95% match Kirschbaum Pro Line I 17L (1.20) 94% match MSV Co.-Focus 16L 94% match Luxilon Big Banger Ace 18 (1.12) 94% match Kirschbaum Pro Line I 17 (1.25) 93% match Ashaway MonoGut 17 93% match

More from Gosen

What these numbers mean

Stiffness · lb/in

How much the string bed resists deflection. Higher plays firmer and more controlled; lower plays softer and easier on the arm.

Tension loss · %

Share of the reference tension the string sheds under a fixed test protocol. Lower means the bed stays where you strung it for longer.

Energy return · %

Share of impact energy handed back to the ball. Higher plays livelier and more powerful.

Spin potential

Ball friction divided by string-on-string friction. Higher means better bite with a cleaner snapback, so more spin.

Ball bite · COF

String-on-ball friction. Higher grabs the ball harder through the brush.

Snapback · COF

String-on-string friction. Lower lets the mains slide and snap back into place after impact.

Compare Polylon PolyBreak 17 (1.24) against 789 strings Find the right string for me