Up Charge Shaft 
Up Charge Shaft 
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A low spinning, high launching, adjustable hybrid – developed hand in hand with our tour advisors, yet playable for all levels.
Utilizing a high energy MAS1C steel face boosted by Mizuno’s CORTECH Chamber for exceptional ball speeds and powerful, solid sensation at impact.
A slightly larger, more playable footprint than its predecessor the CLK.
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
“The CORTECH Chamber is very effective on the fairway woods and hybrids as it does such a good job of lowering the sweet spot – maintaining ball speeds when you have to pinch one from a tight fairway.”
CHRIS VOSHALL / MIZUNO GOLF
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.
Engineered to create a low sweet spot and deep centre of gravity, for high stable launch and efficient spin rates.
Reworked with a new multi-thickness design – made possible through the face support of Mizuno’s CORTECH Chamber.
4 degrees of adjustability.
4 degrees of loft adjustability to fine-tune look and trajectory.
| Model | Loft Range° | Lie Range | CC | Length (inch) |
| ST-Z 230 2HB | 16 (14-18) | 55.5-58.5 | 121 | 41 |
| ST-Z 230 3HB | 19 (17-21) | 56.0-59.0 | 115 | 40.5 |
| ST-Z 230 4HB | 22 (20-24) | 56.5-59.5 | 108 | 40 |
| ST-Z 230 5HB | 25 (23-27) | 57.0-60.0 | 103 | 39.5 |
Dexterity:
RH 2HB – 5HB
LH 3HB – 4HB
With Built in Gyro for Digital Lie Angle Adjustment. The most accurate fitting ever.
