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Kirschbaum

Super Smash 17 (1.25)

Polyester Gauge 17 1.25 mm In production

Lab measurements for Kirschbaum Super Smash 17 (1.25), 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

211lb/in

lower = softer, kinder on the arm

Tension loss

48%

lower = stays where you strung it

Energy return

83%

higher = livelier, more free power

Spin potential

5.7

higher = more spin off the string bed

Ball bite

0.453COF

higher = grabs the ball harder

Snapback

0.080COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 211 lb/in · 80th pct

Stiffer than 80% of strings tested.

Tension loss 48 % · 85th pct

Sheds more tension than 85% of strings tested.

Energy return 83 % · 10th pct

Livelier than 10% of strings tested — very muted and low-powered.

Spin potential 5.7 · 74th pct

More spin potential than 74% of strings tested.

Ball bite 0.453 COF · 58th pct

Grips the ball harder than 58% of strings tested.

Snapback 0.080 COF · 23rd pct

More string-on-string friction than 23% of strings tested.

Strings that play like this

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

Luxilon ALU Power 125/16L 94% match Kirschbaum Touch Turbo 1.30 94% match Kirschbaum Super Smash Spiky 17 (1.25) 93% match Solinco Revolution 16 93% match Kirschbaum Helix 16 93% match Kirschbaum Super Smash 16/1.30 93% match

More from Kirschbaum

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 Super Smash 17 (1.25) against 789 strings Find the right string for me