Mizuno ST-X 230 Driver

Description

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’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.

“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, Mizuno R&D

The ST-X 230 Driver

features a rounder, deeper profile with weight located closer to the hosel. This translates to slightly higher rates of spin and a draw bias, with workability in lower lofts. Players with a natural draw bias stand to gain extra speed from the ST-X.

“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.”

Chris Voshall, Mizuno Club Engineer

FEATURES:

CORTECH CHAMBER
The missing piece: 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.

WRENCH TOOL INCLUDED
Yes

HEADCOVER INCLUDED
Yes

STANDARD GRIP
Lamkin ST Hybrid 360

WARRANTY
1 Year Manufacturer’s Warranty