Manufacturers / Mizuno / ST-G Driver / Adapter settings
Adapter settings, decodedMizuno ST-G Driver adapter settings chart
The ST-G Driver uses the Mizuno Quick Switch (230 Series) adapter (Mizuno connector system), Quick Switch (ST-X 230 / ST-Z 230 / ST-G, 2023; JPX One / JPX One Select, 2026).
Values apply to right-handed heads. Left-handed mappings differ for some systems; consult the manufacturer's left-handed chart.
Interactive adjustment guide
Enter your head's stated loft, then pick a position to decode it, or pick a loft change to see which positions get you there.
| Position | Loft | Lie | Face angle | Notes |
|---|---|---|---|---|
| STANDARDFactory | std | std | square | Factory ship setting (Mizuno's own STANDARD position on the adaptability chart). |
| STANDARD/LOWER-1 | -1.125° | +0.75° | 1.5 open | Intermediate position on Mizuno's adjustability wheel between STANDARD and LOWER; not individually named by Mizuno. |
| LOWER | -2.25° | +1.5° | 3 open | Label taken verbatim from Mizuno's chart. Maximum lower-loft setting. |
| LOWER/UPRIGHT-1 | -1.125° | +2.25° | 1.5 open | Intermediate position on Mizuno's adjustability wheel between LOWER and UPRIGHT; not individually named by Mizuno. |
| UPRIGHT | std | +3° | square | Label taken verbatim from Mizuno's chart. Same stated loft as STANDARD but 3 degrees more upright. |
| UPRIGHT/HIGHER-1 | +1.125° | +2.25° | 1.5 closed | Intermediate position on Mizuno's adjustability wheel between UPRIGHT and HIGHER; not individually named by Mizuno. |
| HIGHER | +2.25° | +1.5° | 3 closed | Label taken verbatim from Mizuno's chart. Maximum higher-loft setting. |
| HIGHER/STANDARD-1 | +1.125° | +0.75° | 1.5 closed | Intermediate position on Mizuno's adjustability wheel between HIGHER and STANDARD; not individually named by Mizuno. |
ST-G contingency research (2026-07-12): Mizuno DOES host first-party ST-G 230 adaptability charts, contrary to the mizuno-quick-switch-230 adapter's prior note that the ST-G-230-Adaptability-10.5.png path 404s. Live, first-party charts were found at https://mizunogolf.com/wp-content/uploads/2023/10/st-g-9.5-adapter.png and https://mizunogolf.com/wp-content/uploads/2023/10/st-g-10.5-adapter.png (both HTTP 200, mizunogolf.com wp-content/uploads path, same hosting pattern as the existing ST-X/ST-Z 230 charts). The ST-G 10.5 HEAD chart's E-loft, lie, and face-angle values at every one of the 8 wheel positions are numerically identical to the ST-X 230 10.5 HEAD chart already in this dataset (e.g. LOWER 8.25/59/3, HIGHER 12.75/59/-3, UPRIGHT 10.5/62/0), and its STANDARD lie (57.5) matches ST-Z 230's STANDARD lie exactly, confirming ST-G shares the identical mizuno-quick-switch-230 hosel geometry. Classified to mizuno-quick-switch-230 rather than a new settings-less adapter; coordinator should update that adapter's curation_notes and add ST-G rows to settings.csv in a future pass (out of scope for this model_adapters.csv classification task).
Compatible shafts: what fits this head
Settings from Mizuno ST-Z 230 / ST-X 230 Adaptability Chart.
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