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Tourna

Synthetic Gut Armor 17

Nylon/Polyester Gauge 17 1.30 mm In production

Lab measurements for Tourna Synthetic Gut Armor 17, 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

157lb/in

lower = softer, kinder on the arm

Tension loss

16%

lower = stays where you strung it

Energy return

94%

higher = livelier, more free power

Spin potential

6.1

higher = more spin off the string bed

Ball bite

0.496COF

higher = grabs the ball harder

Snapback

0.081COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 157 lb/in · 21st pct

Stiffer than 21% of strings tested.

Tension loss 16 % · 6th pct

Sheds more tension than 6% of strings tested — outstanding tension maintenance.

Energy return 94 % · 95th pct

Livelier than 95% of strings tested — huge free power off the string bed.

Spin potential 6.1 · 81st pct

More spin potential than 81% of strings tested.

Ball bite 0.496 COF · 76th pct

Grips the ball harder than 76% of strings tested.

Snapback 0.081 COF · 26th pct

More string-on-string friction than 26% of strings tested.

Strings that play like this

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

Gosen AK Pro CX 17 (1.24) 98% match Babolat RPM Soft 16 (1.30) 95% match Wilson Synthetic Gut Power 17 (1.25) 94% match Head Velocity MLT 17 (1.25) 93% match Solinco Vanquish 17 (1.20) 93% match Tecnifibre Multifeel 16 Black (1.30) 93% match

More from Tourna

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 Synthetic Gut Armor 17 against 789 strings Find the right string for me