Mizuno JPX-850 Forged vs Mizuno JPX-900 Forged
Side-by-side factory specifications. Differing values are highlighted.
Specification comparison
| Club | JPX-850 Forged loft | JPX-900 Forged loft | JPX-850 Forged lie | JPX-900 Forged lie | JPX-850 Forged length | JPX-900 Forged length |
|---|---|---|---|---|---|---|
| 4 | 22 | 21 | 60 | 60 | 38.25 | 38.25 |
| 5 | 25 | 24 | 60.5 | 60.5 | 37.75 | 37.75 |
| 6 | 28 | 27 | 61 | 61 | 37.25 | 37.25 |
| 7 | 32 | 31 | 61.5 | 61.5 | 36.75 | 36.75 |
| 8 | 36 | 35 | 62 | 62 | 36.25 | 36.25 |
| 9 | 40 | 40 | 62.5 | 62.5 | 35.75 | 35.75 |
| PW | 45 | 45 | 63 | 63 | 35.5 | 35.5 |
| GW | 50 | 50 | 63 | 63 | 35.25 | 35.25 |
Highlighted cells differ between the two sets. Lofts and lies are factory standard.
Lofts compared
- JPX-850 Forged
- JPX-900 Forged
What the differences mean
At the 7-iron, the JPX-850 Forged is 32° and the JPX-900 Forged is 31°, a 1° gap. Each degree of loft is worth roughly 3 to 4 yards of carry at the same swing speed, so the JPX-900 Forged should carry roughly 3 to 4 yards further with that club, on a slightly lower, shallower flight than the JPX-850 Forged. Across the 8 clubs both sets share, the JPX-900 Forged averages 0.6° stronger, with the largest gap at the 4-iron (22° vs 21°).
The JPX-850 Forged is a players iron and the JPX-900 Forged a players distance iron, so they sit one step apart on the forgiveness scale. The JPX-900 Forged is the more forgiving design, with a wider sole, more offset and more perimeter weighting for roughly 5 to 15 handicaps who want extra distance from a compact head. The JPX-850 Forged trades some of that for a more compact head, thinner topline and more control over flight and shape, which suits roughly scratch to 10 handicaps.
Both heads are listed as forged. With the build method this similar, differences in feel come down to head size, sole width, topline and offset rather than how the heads are made.
The JPX-900 Forged arrived 2 years after the JPX-850 Forged, 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 32° to 31°.
Which should you choose?
The JPX-900 Forged is the stronger-lofted set — up to 1° stronger than the JPX-850 Forged 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-850 Forged specs and Mizuno JPX-900 Forged specs.
Frequently asked questions
Is the Mizuno JPX-850 Forged stronger lofted than the JPX-900 Forged?
No. The JPX-900 Forged is the stronger-lofted set: its 7-iron is 31° against 32° for the Mizuno JPX-850 Forged, 1° stronger and worth roughly 3 to 4 yards of extra carry.
What is the loft difference between the Mizuno JPX-850 Forged and JPX-900 Forged?
At the 7-iron the difference is 1° (32° vs 31°). The largest gap on a shared club is 1° at the 4-iron, and 5 of the 8 shared clubs differ.
Which is better for higher handicap golfers, the Mizuno JPX-850 Forged or the JPX-900 Forged?
The JPX-900 Forged. As a players distance iron it is the more forgiving design, suited to roughly 5 to 15 handicaps who want extra distance from a compact head. The Mizuno JPX-850 Forged is a players iron, better suited to roughly scratch to 10 handicaps.
Do the Mizuno JPX-850 Forged and JPX-900 Forged have the same lie and length?
At the 7-iron, yes: both are 61.5° lie and 36.75 inches long.
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