Srixon Z-Star Diamond Review (2026): The Highest-Spinning Ball in the Lineup

Quick answer

The Z-Star family: label vs measurement

Compression values in parentheses are from the BallCaddie catalog. Srixon’s numbers come from the Z-Star Diamond product page model comparison chart. Every robot figure below is MyGolfSpy’s measurement, not ours.

What Srixon says the Diamond is

Srixon’s product page runs a three-column comparison of the Z-Star family, and the Diamond’s column reads “Blended Distance & Spin.” The Z-Star above it reads “Maximum Greenside Spin.” The XV below it reads “Maximum Distance.” Read as written, the Diamond is the compromise pick — some of the XV’s speed, some of the Z-Star’s stopping power, neither taken to its limit.

The construction supports the middle-child story. All three are now 3-piece urethane balls sharing the same Spin Skin+ coating and the same 338 Speed Dimple pattern. The FastLayer DG Core 2.0 starts soft at the center and firms up toward the edge, which Srixon says gives high-speed players “optimized iron spin” without giving away ball speed. Srixon lists the Diamond at 100 compression, four points below the XV’s 102 and twelve above the Z-Star’s 88.

What the robots measured instead

MyGolfSpy tested 48 ball models in July 2026 across three Scottsdale-area facilities, using Golf Labs robots and TrackMan at three driver speeds — 116, 102 and 86 mph — plus a 7-iron at each speed and a 35-yard wedge shot.

The Z-Star Diamond spun more than anything else they hit. At the 116 mph condition it tied the Vice Pro Plus (~97) at just over 2,500 rpm for the most driver spin in the field, against a test median of 2,311. It topped the driver-spin chart at 102 mph as well, the only ball to lead that column at two speeds. At 86 mph it sat third. Across the six driver and iron conditions, MyGolfSpy noted the Diamond and the Vice Pro Plus “finished first or second for spin in five.”

That earned it a 2026 Top Pick in the high-spin category at high swing speed, alongside the Titleist Pro V1x (~102) and the Callaway Chrome Tour X (~99). It appears on no other list. MyGolfSpy left it off both the mid-speed and low-speed picks, which is the sharpest fitting signal in the report.

Flight flips between the driver and the irons

MyGolfSpy singled the Diamond out as the best illustration of a ball behaving like two different balls depending on the club:

Srixon’s Z-Star Diamond is perhaps the best example: it’s among the highest-flying balls off the driver and among the lowest and most penetrating off irons — a top-10 driver flight and a bottom-three iron flight at every speed we tested.

That’s a fitting hazard. A launch-monitor session that only looks at driver numbers will read the Diamond as a high launcher. A session that only looks at irons will read it as a flat, penetrating ball. Both readings are correct. Neither describes the ball on its own. If you want the full method for fitting across the bag rather than off one club, our swing-speed fitting guide walks through the order to test in.

The iron numbers carry a cost. The Diamond sat near the bottom of the field for 7-iron ball speed at both high and mid speed — MyGolfSpy pointed out that at the mid-speed condition it, the Mizuno Pro X and the Maxfli Tour X LS were “all slower off the iron than a $15 Amazon Basics.” It also landed at the bottom end of the iron-distance chart, though the same report notes those balls “were not short off the tee.” High spin buys you a steep, stopping approach and hands back yardage on the way.

Greenside: the Diamond out-spins Srixon’s spin ball

The 35-yard wedge test is where the marketing chart cracks. MyGolfSpy’s robot hit a Vokey SM10 to a 35-yard carry, producing a field median of 5,390 rpm. Three balls cleared 5,900: the Chrome Tour X, the Pro V1x and the Z-Star Diamond. The standard Z-Star — the ball Srixon labels “Maximum Greenside Spin” — finished just behind them.

Two other test houses found the same order:

Golf Monthly’s tester, working on a GCQuad, wrote that the standard Z-Star “spun the least for me of all three balls with wedges” — the reverse of Srixon’s own chart. On a partial wedge the Diamond held roughly 800 rpm over both siblings.

One honest caveat: Plugged In Golf’s 2022 review of an earlier Diamond generation found “very modest differences between the three models” around the green, no more than a couple hundred rpm, with the Z-Star nominally on top. The 2025 generation moved. Treat the older reviews as history rather than as a read on the ball on shelves now.

The compression numbers don’t agree

Three credible sources measure this ball three different ways:

• BallCaddie catalog: ~93
• Srixon, published: 100
• Today’s Golfer Instron test: 106, from 18 balls per model across 1,116 trials

The spread is a method problem. An Instron force-and-deformation rig and a handheld gauge don’t produce interchangeable numbers, which is why our compression chart treats compression as a band rather than a single figure. What matters is that all three orderings agree: the Diamond sits above the Z-Star and below the XV, and all three are firm. Today’s Golfer read the Z-Star at 92 and the XV at 112 on the same rig.

For a 105 mph swing that spread is academic. Under about 95 mph it isn’t. A firm core you can’t fully compress costs ball speed you never get back.

Buy it if / skip it if

Buy it if:

• You swing the driver 105 mph or faster and your miss is a shot that runs out past the flag.
• You want maximum stopping power on approach and greenside shots and will accept a flatter iron flight to get it.
• You’re already playing a Pro V1x and want the same spin profile for $3 less.

Skip it if:

• You swing under about 95 mph. TrackMan’s amateur data puts the average male driver swing at 93–94 mph, which is the wrong end of this ball.
• Your driver already spins too much — this topped MyGolfSpy’s driver-spin chart at both 116 and 102 mph, and adding spin to a ballooning drive costs carry.
• You want the softest feel in the family. That’s the standard Z-Star at ~81, and it’s the better call between roughly 95 and 105 mph.

Fast swingers chasing distance over spin belong on the Z-Star XV instead — Today’s Golfer clocked it at 163.4 mph of driver ball speed against the Diamond’s 163.6 at a 114 mph swing, effectively level, but the XV gives back roughly 200 rpm of wedge spin for a firmer, longer-running flight.

Price and tour credibility

Srixon lists the Z-Star Diamond at $54.99 per dozen on its own store. That sits $3 under the $57.99 Pro V1x and level with the $54.99 Chrome Tour X — the two balls it shares MyGolfSpy’s high-spin Top Pick list with. Srixon’s site also carries a 24-pack that works out near $35 a dozen, which is the cheapest legitimate route into a genuine tour ball right now.

J.J. Spaun won the 2025 U.S. Open at Oakmont with the Z-Star Diamond in play, closing birdie-birdie to win by two at 1-under. Keegan Bradley and Brooks Koepka are also on the model, Koepka having switched to it after signing with Srixon.

The next step

Spin ranking is one input. Your driver speed, your typical miss and your budget decide the rest, and a ball that leads every spin chart in a robot test can still be the wrong ball for a 95 mph swing that already spins too much.

Run the BallCaddie fitting quiz — it scores your answers against every ball in the catalog, including all three Z-Stars, and tells you where the Diamond actually lands for your numbers. Or browse the full ball catalog to compare specs side by side.

For deeper dives

• How to choose a golf ball by swing speed — the fitting order to test in, and why driver speed sets the compression band
• Srixon golf balls: the complete lineup — every Srixon model mapped from the Z-Star XV down to the Soft Feel
• Srixon Z-Star XV review — the firmest, longest ball in the family
• Srixon Z-Star vs Titleist Pro V1 — the softer Z-Star against the benchmark
• The 2026 MyGolfSpy ball test: 7 findings — the full 48-ball robot test read as fitting criteria
• Golf ball compression chart — why measured compression varies by rig, and how to read the bands

Key takeaways

• Srixon markets the Z-Star Diamond as the blended middle of the family. Every independent robot test ranks it at or near the top of the spin charts instead.
• It produced the most driver spin of 48 balls in MyGolfSpy’s 2026 test at 116 mph, led the same chart at 102 mph, sat third at 86 mph, and cleared 5,900 rpm on a greenside wedge — one of three balls that did.
• It out-spins the standard Z-Star around the green, which is the ball Srixon labels “Maximum Greenside Spin.”
• Flight flips club to club: a top-10 driver flight and a bottom-three iron flight at every speed tested.
• MyGolfSpy named it a Top Pick at high swing speed only. Under about 95 mph, the compression works against you.
• $54.99 a dozen, $3 under the Pro V1x it shares the high-spin Top Pick list with, and a 2025 U.S. Open win behind it.