Mizuno JPX-923 Hot Metal Irons Specifications
Full factory loft, lie and length chart for the Mizuno JPX-923 Hot Metal irons, 2022–2024.
- Years produced
- 2022–2024
- Category
- Game Improvement Irons
- Construction
- investment cast
- Material
- Nickel Chromoly 4335
- Set makeup
- 4–LW
Data confidence: medium. These figures are compiled from secondary sources rather than a manufacturer spec sheet. If you have an original catalogue page, send it over and we will update the chart.
Loft, lie & length chart
| Club | Loft (°) | Lie (°) | Length (in) | Offset (in) | Bounce | Swing wt |
|---|---|---|---|---|---|---|
| 4 | 19 | 60 | 38.5 | 0.233 | 1 | D2 |
| 5 | 22 | 60.5 | 38 | 0.22 | 2 | D2 |
| 6 | 25 | 61 | 37.5 | 0.208 | 3 | D2 |
| 7 | 28.5 | 61.5 | 37 | 0.196 | 4 | D2 |
| 8 | 33 | 62 | 36.5 | 0.18 | 5 | D2 |
| 9 | 37.5 | 62.5 | 36 | 0.159 | 6 | D2 |
| PW | 42.5 | 63 | 35.5 | 0.135 | 7 | D2 |
| GW | 48 | 63 | 35.25 | 0.098 | 9 | D2 |
| SW | 54 | 63 | 35.25 | 0.082 | 13 | D2 |
| LW | 60 | 63 | 35.25 | 0.065 | 10 | D2 |
Lofts and lies are the factory standard build. Individual clubs may differ if they have been bent, re-shafted or re-gripped during their life.
About the Mizuno JPX-923 Hot Metal
The JPX-923 Hot Metal is the cast, distance-oriented model of the 2022 JPX family, using a Nickel Chromoly 4335 body with a face thinned to 1.8 mm and a redesigned V-Chassis sole. It was sold alongside narrower Hot Metal Pro and weaker-lofted Hot Metal HL variants; the specs here are the standard Hot Metal. It carries the most offset in the family, from 0.233 inches in the 4-iron to 0.065 inches in the lob wedge, and the strongest lofts, with a 28.5-degree 7-iron and a 42.5-degree pitching wedge against 30 and 44 degrees on the JPX-923 Forged. The stock set is 4-iron through lob wedge. Lofts, lies and lengths listed are the men's standard steel-shaft build.
Related models
- Same generation, weaker lofts: Mizuno JPX-923 Forged
- Predecessor: Mizuno JPX-921 Hot Metal
- Compare: Mizuno JPX-923 Hot Metal vs Mizuno JPX-921 Hot Metal
- Compare: Mizuno JPX-923 Hot Metal vs Mizuno JPX-923 Forged
Frequently asked questions
What is the loft of a Mizuno JPX-923 Hot Metal 7-iron?
The Mizuno JPX-923 Hot Metal 7-iron has a loft of 28.5 degrees, with a 61.5-degree lie and a 37-inch steel-shaft length.
How do JPX-923 Hot Metal lofts compare with JPX-923 Forged?
The Hot Metal is 1.5 degrees stronger through most of the set. Its 7-iron is 28.5 degrees against 30 degrees for the Forged, and its pitching wedge is 42.5 degrees against 44 degrees.
What is the difference between JPX-923 Hot Metal, Hot Metal Pro and Hot Metal HL?
All three share the same head material. Hot Metal Pro is a more compact head with less offset at the same lofts, while Hot Metal HL is weaker-lofted for higher launch, with a 31-degree 7-iron against 28.5 degrees on the standard Hot Metal.
What wedges were in the JPX-923 Hot Metal set?
The stock range was 4-iron through lob wedge, with a 42.5-degree pitching wedge, 48-degree gap wedge, 54-degree sand wedge and 60-degree lob wedge.
Finding a used set
The Mizuno JPX-923 Hot Metal is no longer in production, so the used market is the only source. Search eBay, 2nd Swing, Golf Avenue and the PGA Tour Superstore trade-in listings, and check the loft and lie against the chart above before buying — sets this age have often been bent from standard.
- tgw.com Golf Guide, Mizuno JPX 923 Hot Metal Irons review specification table (standard Hot Metal column: loft/length/lie/bounce/offset/swingweight, 4-LW)
- 2ndswing.com Mizuno JPX 923 Hot Metal Iron Set specification table (independently corroborates loft/lie/length/offset)
- todays-golfer.com Mizuno JPX923 Hot Metal, Hot Metal Pro and Hot Metal HL irons review (confirms the 28.5-degree 7-iron for Hot Metal and 31 degrees for the HL variant)
Last reviewed 2026-07-22. Spot an error? [email protected]