Head to head

Luxilon 4G 16L (1.25) vs Pacific X Force 16L (1.29)

They split the measurements 3–3. The widest gap is ball bite, where X Force 16L (1.29) is 61 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Luxilon

4G 16L (1.25)

Polyester · 16L ga

Pacific

X Force 16L (1.29)

Polyester · 16L ga

Stiffness lower = softer, kinder on the arm
25999th pct
22087th pct
Tension loss lower = stays where you strung it
2123rd pct
2535th pct
Energy return higher = livelier, more free power
9165th pct
8953rd pct
Spin potential higher = more spin off the string bed
3.927th pct
4.440th pct
Ball bite higher = grabs the ball harder
0.3667th pct
0.47668th pct
String friction lower = strings slide and snap back
0.09556th pct
0.10874th pct

Bars are percentile against all 791 strings, and the marked side is the one that measures better, which is not always the one you want. A firmer bed is worse for your elbow and better for your control, and no measurement knows which of those you came for.

Which one wins, by problem

Each string's standing on the site's rankings, out of every measured string in the database. This is where a comparison stops being arithmetic and starts being a decision.

Swapping between them: what tension?

Bed stiffness is published at one reference tension, so the only honest conversion is to scale it. These are starting points from 52 lb, not prescriptions. The calculator takes your own tension.

Coming from 4G 16L (1.25) at 52 lb

String X Force 16L (1.29) at 61.3 lb 27.8 kg

Coming from X Force 16L (1.29) at 52 lb

String 4G 16L (1.25) at 44.1 lb 20.0 kg

Hybrid: what if you used both?

Estimated, not measured. No hybrid combination has been tested as a bed. These figures are the two strings' own lab measurements weighted by how much of the bed each one actually is. Treat them as a guide to which way a pairing moves, never as lab data.

4G 16L (1.25) mains / X Force 16L (1.29) crosses

Stiffness98th pct · 1 measured
Tension loss27th pct · 1 measured
Energy return61st pct · 1 measured
Spin potential30th pct · 1 measured
Ball bite14th pct · 1 measured
String friction62nd pct · 1 measured

X Force 16L (1.29) mains / 4G 16L (1.25) crosses

Stiffness96th pct · 1 measured
Tension loss31st pct · 1 measured
Energy return59th pct · 1 measured
Spin potential38th pct · 1 measured
Ball bite61st pct · 1 measured
String friction69th pct · 1 measured

Open this in the hybrid builder

Which goes dead first?

Estimated from tension loss, which is the only thing the database measures about ageing. This is when the bed stops playing the way you strung it, not when the string breaks.

4G 16L (1.25)

~33 hours of play

X Force 16L (1.29)

~29 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Luxilon 4G 16L (1.25) Polyester16L$21.5025921913.90.3660.095
Pacific X Force 16L (1.29) Polyester16Lfind22025894.40.4760.108

Add a third string 4G 16L (1.25) in full X Force 16L (1.29) in full