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Volkl

Cyclone 18L (1.15)

Polyester Gauge 18L 1.29 mm In production

Lab measurements for Volkl Cyclone 18L (1.15), 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

188lb/in

lower = softer, kinder on the arm

Tension loss

29%

lower = stays where you strung it

Energy return

88%

higher = livelier, more free power

Spin potential

9.0

higher = more spin off the string bed

Ball bite

0.641COF

higher = grabs the ball harder

Snapback

0.071COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 188 lb/in · 55th pct

Stiffer than 55% of strings tested.

Tension loss 29 % · 47th pct

Sheds more tension than 47% of strings tested.

Energy return 88 % · 48th pct

Livelier than 48% of strings tested.

Spin potential 9.0 · 99th pct

More spin potential than 99% of strings tested — elite spin generation.

Ball bite 0.641 COF · 98th pct

Grips the ball harder than 98% of strings tested — bites the ball hard through the brush.

Snapback 0.071 COF · 6th pct

More string-on-string friction than 6% of strings tested — slides and snaps back freely.

Strings that play like this

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

MSV Co-Focus 17L (1.18) 96% match Diadem Elite XT 17 95% match Volkl Cyclone 19 (1.10) 95% match Solinco Hyper-G 18 (1.15) 95% match Diadem Solstice Pro 15L (1.35) 94% match Diadem Solstice Power 17 (1.20) 94% match

More from Volkl

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 Cyclone 18L (1.15) against 789 strings Find the right string for me