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ST-X 230
ST-X 230
More workable, mild draw biased
Mizuno ST-X 230

ST-X 230 Driver

More workable, mild draw biased

A more rounded, deeper profile with weight located closer to the hosel – means slightly higher spinning and draw biased for the majority, but more workable for many elite players (especially in lower lofts).

Natural drawers of the ball may find more ball speed from the ST-X. Boosted by the CORTECH Chamber to be faster from the face, spin less and deliver an incredible, solid sensation at impact.

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Through slot provides additional CORAREA by providing sole flex

TPU material allows sole flexure for face stress reduction

TPU material provides sound tuning/damping for enhanced solid feel

Inserted Stainless steel weight, ideally located for spin reduction

ST-X 230 Tech

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.

ST-X 230 Tech

Toe Side Composite with shorter CG to shaft axis distance.

ST-X 230 Tech

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.

“The new ST-X 230 is a complex character. Although in the higher loft option it’s a higher flying draw biased option, the 9.5 for many of our tour players was more workable and faster from the face. You really need to hit both models before making any judgements on which is likely to work best for you.”


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ST-X 230

Driver features

Mizuno’s CORTECH Chamber encases a dense stainless steel weight with elastomeric TPU – taking stress from the clubface and creating an additional energy source. At the same time locating weight closer to the clubface to reduce spin rates. While contributing to a more solid, powerful sensation at impact.

Forged SAT 2041 Beta Ti Face

More resilient than commonly used 6-4 Ti, with more complex multi-thickness design – made possible by Mizuno’s CORTECH Chamber.

Unified Sole Composite

Carbon sole plate now a single piece to allow weight to be pushed to the extremes for overall stability.

Workable / Draw bias

Weight located closer to the shaft axis can both encourage a more workable or draw biased outcome, dependent on the player.

Deeper Profile

A more rounded look that sits a little taller. Aligns square in the neutral setting.

Quick Switch Hosel

4 degrees of adjustability.


4 degrees of loft adjustability to fine-tune look and trajectory.

Specs and Options

ST-X 230 Driver Specification


Model Loft Range° Lie Range CC Length (inch)
ST-X 230 10.5 8.5-12.5 59.0-62.0 460 45

Dexterity: RH & LH

Model Loft Range° Lie Range CC Length (inch)
ST-X 230 9.5 7.5-11.5 59.0-62.0 460 45
ST-X 230 12.0 10.0-14.0 59.0-62.0 460 45
ST-X 230 10.5 Womens Driver 8.5-12.5 59.0-62.0 460 44
ST-X 230 12.0 Womens Driver 10.0-14.0 59.0-62.0 460 44

Dexterity: RH Only

Loft/Lie Adjustments
Introducing Cortech Chamber

Test the ST Series alongside your current driver at your local Mizuno Swing DNA Fitter.

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