Mizuno ST-MAX 230 vs Mizuno JPX One Drivers
Side-by-side stock loft coverage, head by head. Lofts where the two families offer a different number of heads are highlighted.
Stock lofts compared
| Loft | ST-MAX 230 heads | # | JPX One heads | # |
|---|---|---|---|---|
| 9° | not offered | — | Std, Select | 2 |
| 9.5° | Std | 1 | not offered | — |
| 10.5° | Std | 1 | Std, Select | 2 |
| 12° | Std | 1 | Std | 1 |
Each cell lists the heads sold at that stock loft, factory standard. Adjustable hosels extend every head beyond its stamped loft — each model page has the full settings chart.
What the differences mean
The JPX One family is the broader line: 2 heads against 1 — Std for the ST-MAX 230, Std and Select for the JPX One.
The ST-MAX 230 is sold from 9.5° to 12°, the JPX One from 9° to 12°. Only the ST-MAX 230 has a stock 9.5° option. Only the JPX One has a stock 9° option.
Adjustability is a wash: both use the same hosel system (Quick Switch, ±2° of loft), so a given head reaches the same effective loft window in either generation.
The JPX One arrived 2 years after the ST-MAX 230 as its replacement. Driver generations usually carry over the loft ladder and move the technology — face design, adjustability, head options — so the older family is the value buy on the used market while the newer one holds retail price.
Which should you choose?
The JPX One is the newer generation, so it carries the current face technology and full retail availability; the ST-MAX 230 is the value buy used or on closeout. If the head and loft you want is only in one lineup, that decides it — otherwise the newer family is the default at equal prices, and the older one the smarter buy at a real discount.
Both families are charted in full on their own pages: Mizuno ST-MAX 230 driver specs and Mizuno JPX One driver specs.
Frequently asked questions
What lofts do the Mizuno ST-MAX 230 and JPX One drivers come in?
The Mizuno ST-MAX 230 is sold in stock lofts from 9.5 to 12 degrees and the JPX One from 9 to 12 degrees. They share 2 stock lofts.
Which has more head options, the Mizuno ST-MAX 230 or the JPX One?
The JPX One: 2 head variants against 1.
Are the Mizuno ST-MAX 230 and JPX One drivers adjustable?
Yes — the Mizuno ST-MAX 230 uses Quick Switch, ±2° of loft, and the JPX One uses Quick Switch, ±2° of loft. Each model page carries the full setting-by-setting adjustment chart.
Shop Mizuno ST-MAX 230
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