Mizuno JPX 923 Hot Metal vs JPX 921 Hot Metal
The Mizuno JPX 923 Hot Metal used from $754.99 replaced the Mizuno JPX 921 Hot Metal used from $384.99. Here is what changed, side by side, from the same sourced figures as each spec page.
What changed
- Different lofts on 4 of 7 shared clubs (7-iron -0.5°, 8-iron -1°, 9-iron -1.5°, PW -1.5°).
- Only the Mizuno JPX 923 Hot Metal comes in GW, SW, LW.
Club by club
Loft · lie · length, from each set's factory specs. Rows where they differ are marked.
| Club | Mizuno JPX 923 Hot Metal | Mizuno JPX 921 Hot Metal |
|---|---|---|
| 4-iron | 19° · 60° · 38.5" | 19° · 60° · 38.5" |
| 5-iron | 22° · 60.5° · 38" | 22° · 60.5° · 38" |
| 6-iron | 25° · 61° · 37.5" | 25° · 61° · 37.5" |
| 7-iron | 28.5° · 61.5° · 37" | 29° · 61.5° · 37" |
| 8-iron | 33° · 62° · 36.5" | 34° · 62° · 36.5" |
| 9-iron | 37.5° · 62.5° · 36" | 39° · 62.5° · 36" |
| PW | 42.5° · 63° · 35.5" | 44° · 63° · 35.5" |
| GW | 48° · 63° · 35.25" | Not in this set |
| SW | 54° · 63° · 35.25" | Not in this set |
| LW | 60° · 63° · 35.25" | Not in this set |
Missing an iron? Complete my set shows the irons that fit, from either generation.
From each spec page
Mizuno JPX 923 Hot Metal. Hot Metal Pro shares these lofts in a smaller head; Hot Metal HL is weaker (31 deg 7-iron). Stores write JPX923, JPX-923 or JPX 923
Mizuno JPX 921 Hot Metal. Retail Sept 2020. Sold 4-GW, but no source checked gives the Hot Metal GW spec, so the GW row is left out. Not the Hot Metal Pro (same lofts, smaller head) or JPX 921 Forged
Prices
Used and new prices from the stores we list are on each model's page: Mizuno JPX 923 Hot Metal used from $754.99 · Mizuno JPX 921 Hot Metal used from $384.99. The older generation usually costs less used.
Sources: loftchart.com (reference, cites the brand's table) and golfergeeks.com (press). Checked Sep 29, 2026.