The new Mizuno ST-Z 230 driver is the latest generation launched in early 2023, offering ball speeds gains, distance and more consistency.

Launched along with the ST-X 230, the two drivers replace the 220 drivers series as Mizuno’s leading range.

The new ST-Z 230 features a straight bias with plenty of forgiveness, and boasts a new CORTECH Chamber design as the key feature to unleash more energy through impact for explosive ball speeds.

In this article, we take a look at what you can expect from the new Mizuno drivers for 2023 how the Z differs from the X model.

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What Mizuno says about the ST-Z 230 driver:

“A straight bias driver with great stability on off centre hits. Similar in look and character to the previous ST-Z.

“Boosted by the CORTECH Chamber to be faster from the face, spin less and deliver an incredible, solid sensation at impact.

“Mizuno’s CORTECH Chamber encases a 3 gram stainless steel weight with elastomeric TPU – taking stress from the clubface and creating an additional source of energy.

“Design focus is a combination of deeper CG and shorter CG distance for a balance of workability in both directions while providing higher MOI and mid/low spin.

“Tour tests for the ST 230 SERIES have all been very consistent – relief that the look is similar at address.

“Then shock at how much better the new ST-Z 230 feels off the face. Ball speeds are up on average 2-5mph with a drop in back spin of around 200 rpm.”

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Mizuno ST-Z 230 Driver Specs & Design

Mizuno have made some notable design tweaks and changes from the ST-Z 220 to the new 230 model.

The key change is the addition of a Cortech Chamber in the sole compared to its predecessor, with this element designed to enhance ball speeds across the face.

The Cortech Chamber is a 3g dense stainless steel weight and elastomeric TPU that is design to add flex to the club face and transfer energy to the ball.

The ST-Z 230 has the face weight distributed evenly to produce the straight ball flight that this model is all about.

The face itself has a multi-thickness design to help with the forgiveness, even on off centre strikes.

The driver also features a carbon sole plate that allows weight to be shifted to the perimeter, and a more rounded club head that sits more square at address.

The ST-Z 230 driver is available in 9 degrees and 10.5 degrees lofts with four degrees of adjustability (7-11 and 8.5-12.5).

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Verdict: Is the Mizuno ST-Z 230 driver any good?

From the initial looks, there isn’t a great deal of difference between the 220 and 230 models, but the proof is the testing and that has shown significantly increased ball speeds.

The Cortech Chamber technology has helped add up to 5mph to drives, and with that comes added distance off the tee.

With the weight evenly distributed in this driver, you expect a straighter ball flight and plenty of forgiveness to help find those fairways with more consistency than before.

FAQs

When is the Mizuno ST-Z 230 driver being released?

The ST-Z 230 release date has been set for February 2023 by Mizuno.

How much does the Mizuno ST-Z 230 driver cost?

The cost of the driver is around $500 / £450.

What are the Mizuno ST-Z 230 driver specs?

The ST-Z 230 driver is available in 9 degrees and 10.5 degrees lofts with four degrees of adjustability (7-11 and 8.5-12.5).

Does the Mizuno ST-Z 230 driver come with warranty?

All clubs come with a one year manufacturer’s warranty as standard from Mizuno.