Mizuno JPX-923 Hot Metal vs Mizuno JPX-925 Hot Metal
Side-by-side factory specifications. Differing values are highlighted.
Specification comparison
| Club | JPX-923 Hot Metal loft | JPX-925 Hot Metal loft | JPX-923 Hot Metal lie | JPX-925 Hot Metal lie | JPX-923 Hot Metal length | JPX-925 Hot Metal length |
|---|---|---|---|---|---|---|
| 4 | 19 | 19 | 60 | 60.5 | 38.5 | 38.75 |
| 5 | 22 | 22 | 60.5 | 61 | 38 | 38.25 |
| 6 | 25 | 25 | 61 | 61.5 | 37.5 | 37.75 |
| 7 | 28.5 | 28 | 61.5 | 62 | 37 | 37.25 |
| 8 | 33 | 32.5 | 62 | 62.5 | 36.5 | 36.75 |
| 9 | 37.5 | 37 | 62.5 | 63 | 36 | 36.25 |
| PW | 42.5 | 42 | 63 | 63.5 | 35.5 | 35.75 |
| GW | 48 | 48 | 63 | 64 | 35.25 | 35.5 |
| SW | 54 | 54 | 63 | 64 | 35.25 | 35.25 |
| LW | 60 | — | 63 | — | 35.25 | — |
Highlighted cells differ between the two sets. Lofts and lies are factory standard.
Lofts compared
- JPX-923 Hot Metal
- JPX-925 Hot Metal
What the differences mean
At the 7-iron, the JPX-923 Hot Metal is 28.5° and the JPX-925 Hot Metal is 28°, a 0.5° gap. Each degree of loft is worth roughly 3 to 4 yards of carry at the same swing speed, so the JPX-925 Hot Metal should carry about 2 yards further with that club, on a slightly lower, shallower flight than the JPX-923 Hot Metal. Across the 9 clubs both sets share, the differences roughly cancel out, with the largest gap at the 7-iron (28.5° vs 28°). The pitching wedges are 42.5° and 42°; the stronger one leaves a 8° jump to a 50° gap wedge, which matters when planning wedge gapping. Beyond loft, the JPX-923 Hot Metal 7-iron sits 0.5° flatter (61.5° vs 62°), which nudges start direction slightly right for a right-hander; the JPX-925 Hot Metal 7-iron is 0.25 inches longer (37" vs 37.25").
The sets are built differently: the JPX-923 Hot Metal runs 4-iron to LW (10 clubs), the JPX-925 Hot Metal 4-iron to SW (9 clubs).
Both are game improvement irons, built for roughly 10 to 25 handicaps. Perimeter-weighted cavity backs with wider soles, more offset and stronger lofts, aimed at mid handicaps. Because they target the same golfer, the decision comes down to the specific loft, feel and shaping differences rather than who the sets are made for.
The JPX-923 Hot Metal is listed as investment cast and the JPX-925 Hot Metal as cast multi-material with a thin face and tungsten weighting. The JPX-925 Hot Metal adds tungsten weighting, which lowers the centre of gravity and raises stability on mis-hits, helping the long irons launch.
The JPX-925 Hot Metal arrived 2 years after the JPX-923 Hot Metal, a typical one-generation refresh. Changes over that span are usually incremental: refined face thickness, revised weighting, updated looks and small loft tweaks rather than a new concept. Here the 7-iron loft moved from 28.5° to 28°.
Which should you choose?
The JPX-925 Hot Metal is the stronger-lofted set — up to 0.5° stronger than the JPX-923 Hot Metal on matching clubs. Expect longer carry per numbered iron but a flatter descent angle; gapping at the wedge end is where that shows up.
Both charts are reproduced in full on their own pages: Mizuno JPX-923 Hot Metal specs and Mizuno JPX-925 Hot Metal specs.
Frequently asked questions
Is the Mizuno JPX-923 Hot Metal stronger lofted than the JPX-925 Hot Metal?
No. The JPX-925 Hot Metal is the stronger-lofted set: its 7-iron is 28° against 28.5° for the Mizuno JPX-923 Hot Metal, 0.5° stronger and worth about 2 yards of extra carry.
What is the loft difference between the Mizuno JPX-923 Hot Metal and JPX-925 Hot Metal?
At the 7-iron the difference is 0.5° (28.5° vs 28°). The largest gap on a shared club is 0.5° at the 7-iron, and 4 of the 9 shared clubs differ.
Are the Mizuno JPX-923 Hot Metal and JPX-925 Hot Metal aimed at the same golfer?
Yes. Both are game improvement irons, built for roughly 10 to 25 handicaps. Choose on feel, looks and gapping, ideally after hitting both.
Do the Mizuno JPX-923 Hot Metal and JPX-925 Hot Metal have the same lie and length?
Not exactly. At the 7-iron the Mizuno JPX-923 Hot Metal is 61.5° lie and 37 inches, the JPX-925 Hot Metal 62° and 37.25 inches. Both can be bent or built to your own fit.
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