Mizuno JPX-923 Hot Metal HL Irons Specifications
Full factory loft, lie and length chart for the Mizuno JPX-923 Hot Metal HL irons, 2022–2024.
- Years produced
- 2022–2024
- Category
- Super Game Improvement Irons
- Construction
- investment cast
- Material
- Nickel Chromoly 4335
- Set makeup
- 5–SW
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 |
|---|---|---|---|---|---|
| 5 | 25 | 60.5 | 38 | 0.257 | 1 |
| 6 | 28 | 61 | 37.5 | 0.245 | 2 |
| 7 | 31 | 61.5 | 37 | 0.233 | 3 |
| 8 | 35 | 62 | 36.5 | 0.204 | 4 |
| 9 | 40 | 62.5 | 36 | 0.176 | 5 |
| PW | 45 | 63 | 35.5 | 0.147 | 6 |
| GW | 50 | 63 | 35.25 | 0.127 | 8 |
| SW | 55 | 63 | 35.25 | 0.106 | 12 |
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.
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Loft progression
About the Mizuno JPX-923 Hot Metal HL
The JPX-923 Hot Metal HL is the high-launch member of the 2022 JPX family and the first HL model in the JPX line. It shares the Nickel Chromoly 4335 head of the standard Hot Metal but with lofts weakened two and a half degrees — a 31-degree 7-iron against 28.5 — so slower swings can flight the ball, and it carries the most offset in the family, 0.257 inches at the 5-iron. The stock set is 5-iron through sand wedge, with lighter stock shafts than the standard model. Lofts, lies and lengths listed are the men's standard steel-shaft build.
Stock shafts
- True Temper Dynamic Gold 95 — steel
- UST Recoil ESX — graphite
Related models
Frequently asked questions
What is the loft of a Mizuno JPX-923 Hot Metal HL 7-iron?
The Mizuno JPX-923 Hot Metal HL 7-iron has a loft of 31 degrees, with a 61.5-degree lie and a 37-inch steel-shaft length.
What is the difference between the JPX-923 Hot Metal and the Hot Metal HL?
The HL uses the same Nickel Chromoly head but with lofts 2.5 degrees weaker — a 31-degree 7-iron against 28.5 — plus slightly more offset and lighter stock shafts, all aimed at higher launch for moderate swing speeds.
What clubs came in the JPX-923 Hot Metal HL set?
The stock set ran 5-iron through sand wedge: a 45-degree pitching wedge, 50-degree gap wedge and 55-degree sand wedge, with no 4-iron offered.
Finding a used set
The Mizuno JPX-923 Hot Metal HL ran from 2022 to 2024 and is no longer in production, so the used market is the only source. Search the used listings on eBay, and check the loft and lie against the chart above before buying — sets this age have often been bent from standard.
- 2ndswing.com Mizuno JPX 923 Hot Metal HL Iron Set specification table (loft, lie, length, offset, 5-SW; stock shafts Dynamic Gold 95 and Recoil ESX)
- tgw.com Golf Guide, Mizuno JPX 923 Hot Metal Irons review, Hot Metal HL specification table (independently corroborates loft/lie/length/offset; source of the bounce figures)
- todays-golfer.com Mizuno JPX923 Hot Metal irons review (confirms the 31-degree HL 7-iron against 28.5 on the standard Hot Metal)
- Swing weight is omitted: 2ndswing lists D0 and TGW lists D2, and the conflict could not be resolved
Last updated 28 July 2026. Spot an error? info@loftchart.com