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Babolat

SG SpiralTek 16

Nylon Gauge 16 1.30 mm In production

Lab measurements for Babolat SG SpiralTek 16, 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

162lb/in

lower = softer, kinder on the arm

Tension loss

15%

lower = stays where you strung it

Energy return

93%

higher = livelier, more free power

Spin potential

4.1

higher = more spin off the string bed

Ball bite

0.370COF

higher = grabs the ball harder

Snapback

0.090COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 162 lb/in · 28th pct

Stiffer than 28% of strings tested.

Tension loss 15 % · 6th pct

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

Energy return 93 % · 78th pct

Livelier than 78% of strings tested.

Spin potential 4.1 · 32nd pct

More spin potential than 32% of strings tested.

Ball bite 0.370 COF · 8th pct

Grips the ball harder than 8% of strings tested — slick against the ball.

Snapback 0.090 COF · 46th pct

More string-on-string friction than 46% of strings tested.

Strings that play like this

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

Prince Perfection 16 (1.30) 96% match Dunlop S-Gut 16 (1.32) 95% match Babolat Xcel Power 16 94% match Wilson NXT Duramax 15 (1.40) 93% match Prince Synthetic Gut 18 Duraflex 92% match Gosen Multi CX 17 (1.24) 91% match

More from Babolat

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 SG SpiralTek 16 against 789 strings Find the right string for me