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Kirschbaum

Xplosive Speed 1.30

Polyester 1.33 mm In production

Lab measurements for Kirschbaum Xplosive Speed 1.30, 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

193lb/in

lower = softer, kinder on the arm

Tension loss

43%

lower = stays where you strung it

Energy return

87%

higher = livelier, more free power

Spin potential

5.7

higher = more spin off the string bed

Ball bite

0.577COF

higher = grabs the ball harder

Snapback

0.102COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 193 lb/in · 61st pct

Stiffer than 61% of strings tested.

Tension loss 43 % · 73rd pct

Sheds more tension than 73% of strings tested.

Energy return 87 % · 35th pct

Livelier than 35% of strings tested.

Spin potential 5.7 · 74th pct

More spin potential than 74% of strings tested.

Ball bite 0.577 COF · 93rd pct

Grips the ball harder than 93% of strings tested — bites the ball hard through the brush.

Snapback 0.102 COF · 66th pct

More string-on-string friction than 66% of strings tested.

Strings that play like this

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

Wilson Revolve 15 (1.35) 96% match Luxilon ALU Power Feel 18/1.20 95% match Gosen Poly Professional 16 (1.29) 94% match Yonex Poly Tour Tough 16L 93% match IsoSpeed Black Fire 17 93% match Luxilon Element 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 Xplosive Speed 1.30 against 789 strings Find the right string for me