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GolfWRX Launch Report: Mizuno ST-Z 230, ST-X 230 drivers, fairway wood, hybrid

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What you need to know: The product of Mizuno’s Speed Technology (ST) Metalwood Project — four years of rapid-fire metalwoods development — 2023 Mizuno ST-Z 230, ST-X 230, and ST-PLTNM feature the centerpiece Cortech Chamber, within which a steel weight is positioned for increased ball speed and spin reduction. The technology extends to the ST-Z 230 fairway wood and hybrid as well.

Mizuno ST-Z 230, ST-X 230: What’s new, key technology

Cortech Chamber: Through slot provides additional COR area by providing sole flex filled with elastomeric TPU material for additional flexure and face stress reduction. Inside the TPU is a stainless steel weight, which is positioned close to the clubface for increased speed and spin reduction. Also contributes to a solid feeling at impact.

SAT 2041 Forged Beta Titanium Face: More flexible and stronger than 6-4 titanium.

Additional model details

ST-Z 230

  • Billed as a “straight, stable, and low spinning” driver. Designed for stability on off-center hits.
  • Engineers focused on positioning CG location being as close as possible to the Z-axis or neutral axis for lower spin, straight performance, and higher MOI.
  • Forged SAT 2041 Beta Ti face, aided by the Cortech Chamber, enhances ball speed and reduces spin
  • 14-gram back weight
  • Shallower CG for a more penetrating ball flight

ST-X 230

  • Billed as a “more workable, mild draw-biased” driver
  • Higher spinning, higher launching than ST-Z 230
  • Deeper CG and shorter CG distance for a balance of workability in both directions
  • 14-gram heel weight
  • Toe side composite for shorter CG to shaft axis distance
  • More rounded, deeper profile

ST-X PLTNM 230

  • An ultra lightweight driver for slower swing speeds
  • High launching
  • Draw biased
  • The ST-X PLTNM is 30g lighter overall than any possible custom option of the ST-X 230
  • High spec Helium Platinum Shaft and lightweight grip

What Mizuno says

“Our player testing over the years shows that placing extra weight close to the face results in faster ball speeds and low spin rates,” says David Llewellyn, Director of R&D for Mizuno. “We’ve been steadily working towards the CORTECH Chamber, which is incredibly effective at that job. Encasing the steel weight within the TPU Chamber means that we’re moving weight close to the face at the same time as creating an additional source of energy. Steel is twice the density of Titanium but won’t weld directly, which is where the TPU has a second role.”

More photos

ST-Z 230

ST-X 230

ST-Z 230 Fairway Wood

  • A mid-low spinning, high launching, adjustable fairway wood
  • Mid-sized and playable for all levels
  • High energy MAS1C steel face boosted by Mizuno’s Cortech Chamber
  • The carbon composite crown for a low center of gravity
  • Quick Switch hosel offers 4 degrees of adjustability

ST-Z 230 Hybrid

  • A mid-low spinning, high launching, adjustable hybrid
  • High energy MAS1C steel face boosted by Mizuno’s Cortech Chamber
  • Waffle crown, thick sole weight create a deep center of gravity for high launch
  • With respect to the CLK, the ST-Z 230 is slightly larger

Price, specs, availability

Drivers

ST-Z

Availability: Right Hand – 9.5 and 10.5 degrees
Left hand – 9.5 degrees only

ST-X

Availability: Right Hand – 9.5, 10.5, and 12 degrees
Left hand – 9.5 degrees only

Fairway wood

Right Hand – 3 wood (15) and 5 wood (18)
Left hand – 3 wood (15)

Hybrid

Availability: Right Hand – 2H (16), 3H (19), 4H (22) and 5H (25)
Left Hand – 3H (19) and 4H (22)

Pricing

ST-Z 230 Driver / ST-X 230 Driver: $499.95
ST-Z 230 PLTNM Driver: $549.95
ST-Z 230 Fairway Woods: $299.95

At retail: February

Ben Alberstadt is the Editor-in-Chief at GolfWRX, where he’s led editorial direction and gear coverage since 2018. He first joined the site as a freelance writer in 2012 after years spent working in pro shops and bag rooms at both public and private golf courses, experiences that laid the foundation for his deep knowledge of equipment and all facets of this maddening game. Based in Philadelphia, Ben’s byline has also appeared on PGATour.com, Bleacher Report...and across numerous PGA DFS and fantasy golf platforms. Off the course, Ben is a committed cat rescuer and, of course, a passionate Philadelphia sports fan. Follow him on Instagram @benalberstadt.

7 Comments

7 Comments

  1. Pingback: Mizuno ST-Max 230 driver: High-MOI addition to the ST 230 lineup - Fly Pin High

  2. Pingback: Mizuno ST-Max 230 driver: High-MOI addition to the ST 230 lineup – GolfWRX

  3. Pingback: GolfWRX Spotted: Costco Kirkland Signature irons on USGA ... - GolfWRX - MidHandicap

  4. Pingback: TOUR REPORT: Rickie's new Odyssey putter (and its fascinating story) - Fly Pin High

  5. Scott

    Jan 20, 2023 at 9:53 am

    Fairways & hybrids are looking good. Shaft options are super limited – I guess that’s a payoff for a less than premium price point. Heads up to anybody that plans on building a separate shaft – Mizuno’s adapter has an off-center bore. If you find an adapter, it will look defective – that’s the design.

  6. Justin

    Jan 19, 2023 at 8:02 pm

    Maybe the best looking hybrid I’ve ever seen

  7. Tom K

    Jan 19, 2023 at 1:43 pm

    Drivers from the different manufacturers all have similar designs.

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BK’s Breakdowns: Cameron Young’s winning WITB, 2025 Wyndham Championship

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Cameron Young’s WITB from his win at the 2025 Wyndham Championship. Cameron is a Titleist staff player but his bag is definitely filled with some unique clubs. Here are the clubs he used to secure his first PGA Tour win!

Driver: Titleist GT2 (9 degrees, A1 SureFit setting)
Shaft: Mitsubishi Tensei 1K Pro Orange 70 TX

3-wood: Titleist GT3 (15 degrees)
Shaft: Mitsubishi Tensei 1K White 80 TX

Hybrid: Titleist GT2 (21 degrees)
Shaft: Fujikura Ventus HB Black VeloCore+ 10 X

Irons: Titleist T200 (4), Titleist T100 (5), Titleist 631.CY Prototype (6-9)
Shafts: True Temper Dynamic Gold X7 (4-9)

Wedges: Titleist Vokey Design SM10 (48-10F, 52-12F, 56-14F @57), WedgeWorks (60-K* @62)
Shafts: True Temper Dynamic Gold X7

Putter: Scotty Cameron Phantom 9.5 Tour Prototype

Grips: Golf Pride Tour Velvet Cord

Ball: Titleist Pro V1x Prototype

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Whats in the Bag

Peter Malnati WITB 2025 (August)

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Driver: Titleist GT3 (10 degrees, C2 SureFit setting)
Shaft: Project X Denali Blue 60 TX

3-wood: Titleist GT3 (15 degrees, A1 SureFit setting)
Shaft: Fujikura Ventus TR Blue 7 X

7-wood: Titleist GT2 (21 degrees, D1 SureFit setting)
Shaft: Fujikura Ventus TR Blue 8 X

Irons: Titleist T150 (4, 5), Titleist T100 (6-9)
Shafts: True Temper AMT Tour White X100

Wedges: Titleist Vokey Design SM10 (48-10F @47, 52-12F, 56-08M @57, 60-04T @62)
Shafts: True Temper Dynamic Gold Tour Issue S400

Putter: Scotty Cameron Studio Style Fastback 1.5 Tour Prototype

Grips: Golf Pride Tour Velvet

Ball: Titleist Pro V1x Yellow

Check out more in-hand photos Malnati’s clubs here.

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Equipment

GolfWRX Members Choice presented by 2nd Swing: Best driver of 2025

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We’re proud to once again partner with 2nd Swing Golf to bring you GolfWRX Members Choice 2025! 2nd Swing has more than 150,000 new and pre-swung golf clubs available in six store locations and online. Check them out here

What is the best driver in 2025? At GolfWRX, we take great pride in our online community and the cumulative knowledge and experience of our members. When it comes to the best driver of 2025, we want to know what our forum faithful think.

Since our founding in 2005, the bedrock of GolfWRX.com has been the community of passionate and knowledgeable golfers in our forums, and we put endless trust in the opinions of our GolfWRX members — the most knowledgeable community of golfers on the internet. No other group of golfers in the world tests golf clubs as frequently or as extensively, nor is armed with such in-depth information about the latest technology.

Below are the results of GolfWRX member voting for the 2025 best driver, along with the vote percentage for each club.

Best driver of 2025: The top 5

5. Callaway Elyte Triple Diamond: 6.02%

Callaway’s pitch: “For golfers looking for a fast, forgiving, yet workable driver, the Elyte Triple Diamond features a tour-inspired shape and is the preferred model by most Callaway tour players.”

You can read what other golfers are saying about the driver in the GolfWRX forums, and see our launch piece here. Shop the Callaway Elyte Triple Diamond here.

4. Ping G440 Max: 6.86%

Ping’s pitch: “The most forgiving G440 model, MAX has a hotter face to generate speed and distance, and a lighter overall system weight with a longer shaft (46″) for faster clubhead speed, higher launch and longer carries. The Free Hosel and Carbonfly Wrap crown save weight to create our lowest CG ever and increase forgiveness while contributing to a more muted, pleasing sound.”

You can read what other golfers are saying about the driver in the GolfWRX forums, and see our launch piece here. Shop the Ping G440 Max here.

3. Ping G440 LST: 9.53%

Ping’s pitch: “LST is an especially good fit for faster swings, offering less spin and more control with a penetrating trajectory. A hotter face, lighter overall system weight and longer shaft (46″) deliver more speed and distance while maintaining tight dispersion.”

@phizzy30: “Not a fan of Ping drivers in general, but 440 LST takes the cake. It’s super forgiving across the face for a low spin head, looks and sounds good and the ability to make it play neutral or slightly fade biased through the hosel settings is very appealing.”

You can read what other golfers are saying about the driver in the GolfWRX forums, and see our launch piece here. Shop the Ping G440 LST here.

2. Titleist GT3: 16.55%

Titleist’s pitch: “The GT3 Driver offers Titleist’s boldest combination of power and personalization through adjustable performance. Dial in the CG Track to your frequent contact location to make your biggest drives even bigger while taking total control over flight and shaping.”

@mrmikeac: “I’ve been Anti-Titleist for years and years and years (outside of Vokey, of course). With that being said, HOLY BEGEEZUS the GT3 driver is an absolute NUCLEAR MONSTER! This thing blew my G430 10K Max out of the water in every single category. Forgiveness is the biggest thing that stands out of me, the 3 model has always been one of the less forgiving models in the past but this GT3 can take bad shot after bad shot and still end up in the fairway, I think a ton of that has to do with the adjustability, it’s actually effective. Feel and sound is perfect, that solid crack is so addicting to hear and when you hit it out the screws this thing can absolutely bomb it. Titleist, I’m sorry for doubting you. You have converted me.”

You can read what other golfers are saying about the driver in the GolfWRX forums, and see our launch piece here. Shop the Titleist GT3 here.

1. Titleist GT2: 22.91%

Titleist’s pitch: “Delivering impressive distance from any impact point, the Titleist GT2 Driver extracts maximum performance through a forgiving design. Get the stability and added confidence of a high-MOI driver without sacrificing speed.”

@DTorres: “The Titleist GT2 has proven to be the best driver of the year. Packaged in a classic profile, GT2 perfectly balances performance and forgiveness while consistently being a high performer across all categories.”

You can read what other golfers are saying about the driver in the GolfWRX forums, and see our launch piece here. Shop the Titleist GT2 here.

Other drivers receiving >2% of the vote

Driver Vote percentage (%)
Cobra DS Adapt Max K 4.85%
Ping G430 Max 10K 3.85%
Callaway Elyte Triple Diamond 3.68%
TaylorMade Qi35 3.51%
Callaway Elyte 3.18%
Cobra DS Adapt X 2.34%
Cobra DS Adapt LS 2.17%
TaylorMade Qi35 LS 2.17%

 

 

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