Kirschbaum

Pro Line Evolution 17 (1.25)

Name: Kirschbaum Pro Line Evolution 17 (1.25)
Brand: Kirschbaum

Polyester Gauge 17 1.30 mm In production

Lab measurements for Kirschbaum Pro Line Evolution 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

208lb/in

lower = softer, kinder on the arm

Tension loss

29%

lower = stays where you strung it

Energy return

89%

higher = livelier, more free power

Spin potential

4.9

higher = more spin off the string bed

Ball bite

0.437COF

higher = grabs the ball harder

Snapback

0.090COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 208 lb/in · 76th pct

Stiffer than 76% of strings tested.

Tension loss 29 % · 46th pct

Sheds more tension than 46% of strings tested.

Energy return 89 % · 55th pct

Livelier than 55% of strings tested.

Spin potential 4.9 · 54th pct

More spin potential than 54% of strings tested.

Ball bite 0.437 COF · 49th pct

Grips the ball harder than 49% of strings tested.

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.

Yonex Poly Tour HS 16 (1.30) 96% match Volkl V-Pro 18 95% match Boris Becker Bomber NYC 16 (1.28) 94% match Gamma Zo Dart 17 (1.25) 94% match Weiss Cannon Black 5 Edge 17 (1.24) 94% match Head Hawk 17 (1.25) 93% match

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 Pro Line Evolution 17 (1.25) against 789 strings Find the right string for me

Measured values

How it ranks against all 789 strings

Strings that play like this

More from Kirschbaum

What these numbers mean