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The new st230 series with

The missing piece

Mizuno ST-230 Series
Mizuno ST-230 Series
Mizuno ST-230 Series

It took four years of rapid-fire development and worldwide tour usage to raise Mizuno metalwoods from the shadows of our iconic irons. Now, after multiple iterative developments for stability, sound and spin, we’ve added exceptional ball speeds to our performance equation. Introducing the CORTECH Chamber.

Mizuno ST230 Product Video
Mizuno ST-Z 230 Fairway wood and hybrid
The Story Behind the Mizuno ST-230 SERIES
ST-Z 230 driver testing with Luke Donald
Mizuno ST-Z and ST-X 230 DRIVERS
Mizuno Golf

The missing piece

Mizuno’s CORTECH Chamber encases a 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.

Chris Voshall - Mizuno ST-230 Series

“Our player testing over the years shows that placing extra weight close to the face results in faster ball speeds and low spin rates. 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 is not weldable – so the TPU has a second role of securing the weight.”

David Llwelleyn on CORTECH Chamber

Coretech Chamber - Mizuno ST-230 Series


TOUR READY to Cortech chamber

Mizuno ST230 Series
CORTECH Chamber and exceptional ball speed

ST220 series

Mizuno ST220 series


Mizuno ST-X & ST-Z series


Mizuno ST200 series


Mizuno ST190 series

Creating momentum on tour

Since 2020 all of Mizuno’s contracted professionals have played and aided in the development of our driver. Maintaining a consistent look at address while incrementally elevating performance has revolutionised the trust in our drivers amongst elite players – from college to the PGA Tour.

ST230 News