StringSpec
String finder

Browse all 789

Pacific

X Force 16L (1.29)

Polyester Gauge 16L 1.33 mm In production

Lab measurements for Pacific X Force 16L (1.29), 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

220lb/in

lower = softer, kinder on the arm

Tension loss

25%

lower = stays where you strung it

Energy return

89%

higher = livelier, more free power

Spin potential

4.4

higher = more spin off the string bed

Ball bite

0.476COF

higher = grabs the ball harder

Snapback

0.108COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 220 lb/in · 87th pct

Stiffer than 87% of strings tested.

Tension loss 25 % · 35th pct

Sheds more tension than 35% of strings tested.

Energy return 89 % · 53rd pct

Livelier than 53% of strings tested.

Spin potential 4.4 · 40th pct

More spin potential than 40% of strings tested.

Ball bite 0.476 COF · 68th pct

Grips the ball harder than 68% of strings tested.

Snapback 0.108 COF · 73rd pct

More string-on-string friction than 73% of strings tested.

Strings that play like this

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

L-Tec Premium Pro OS 16L 93% match Yonex Poly Tour Spin G 1.25 92% match Yonex Poly Tour HS 16 (1.30) 90% match Babolat Hurricane Feel 16 90% match Luxilon 4G Rough 16L 90% match L-Tec Premium OS 17 (1.23) 90% match

More from Pacific

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 X Force 16L (1.29) against 789 strings Find the right string for me