Head to head

Babolat SG SpiralTek 16 vs Babolat Xcel Power 16

SG SpiralTek 16 leads on 4 of 6 measurements. The widest gap is string friction, where SG SpiralTek 16 is 28 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Babolat

SG SpiralTek 16

Nylon · 16 ga

Babolat

Xcel Power 16

Nylon · 16 ga

Stiffness lower = softer, kinder on the arm
16228th pct
16229th pct
Tension loss lower = stays where you strung it
156th pct
1914th pct
Energy return higher = livelier, more free power
9378th pct
9384th pct
Spin potential higher = more spin off the string bed
4.132nd pct
3.824th pct
Ball bite higher = grabs the ball harder
0.3708th pct
0.41332nd pct
String friction lower = strings slide and snap back
0.09046th pct
0.10975th 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 SG SpiralTek 16 at 52 lb

String Xcel Power 16 at 50.5 lb 22.9 kg

Coming from Xcel Power 16 at 52 lb

String SG SpiralTek 16 at 53.3 lb 24.2 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.

SG SpiralTek 16 mains / Xcel Power 16 crosses

Stiffness28th pct · 1 measured
Tension loss8th pct · 1 measured
Energy return80th pct · 1 measured
Spin potential31st pct · 1 measured
Ball bite11th pct · 1 measured
String friction56th pct · 1 measured

Xcel Power 16 mains / SG SpiralTek 16 crosses

Stiffness28th pct · 1 measured
Tension loss10th pct · 1 measured
Energy return82nd pct · 1 measured
Spin potential25th pct · 1 measured
Ball bite27th 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.

SG SpiralTek 16

~38 hours of play

Xcel Power 16

~36 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Babolat SG SpiralTek 16 Nylon16find16215934.10.3700.090
Babolat Xcel Power 16 Nylon16find16219933.80.4130.109

Add a third string SG SpiralTek 16 in full Xcel Power 16 in full