Mizuno JPX-900 Hot Metal Irons Specifications
Full factory loft, lie and length chart for the Mizuno JPX-900 Hot Metal irons, 2016–2018.
- Years produced
- 2016–2018
- Category
- Game Improvement Irons
- Construction
- investment cast
- Material
- Chromoly 4140M
- 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 |
|---|---|---|---|---|---|
| 4 | 21 | 60 | 38.25 | 0.23 | 0 |
| 5 | 24 | 60.5 | 37.75 | 0.211 | 0 |
| 6 | 27 | 61 | 37.25 | 0.191 | 0 |
| 7 | 31 | 61.5 | 36.75 | 0.179 | 1.5 |
| 8 | 35 | 62 | 36.25 | 0.169 | 2.5 |
| 9 | 40 | 62.5 | 35.75 | 0.148 | 3.5 |
| PW | 45 | 63 | 35.5 | 0.128 | 5 |
| GW | 50 | 63 | 35.25 | 0.118 | 7 |
| SW | 55 | 63 | 35.25 | 0.118 | 13 |
| LW | 60 | 63 | 35.25 | 0.118 | 10 |
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-900 Hot Metal
The JPX-900 Hot Metal is the cast, distance-oriented member of Mizuno's 2016 JPX-900 family, made from Chromoly 4140M so the face could be thinned for ball speed while the head stayed strong enough to be bent for loft and lie. It carries noticeably more offset than the forged JPX-900, at 0.179 inches in the 7-iron against 0.132 inches, and the long irons are listed with zero bounce. Lofts are strong, with a 31-degree 7-iron and a 45-degree pitching wedge. The set runs 4-iron through gap wedge with matching sand and lob wedges available. All figures are the men's standard steel-shaft specification.
Related models
- Predecessor: Mizuno JPX-825
- Successor: Mizuno JPX-919 Hot Metal
- Forged model in the same family: Mizuno JPX-900 Forged
- Compare: Mizuno JPX-900 Hot Metal vs Mizuno JPX-825
- Compare: Mizuno JPX-900 Hot Metal vs Mizuno JPX-919 Hot Metal
- Compare: Mizuno JPX-900 Hot Metal vs Mizuno JPX-900 Forged
Frequently asked questions
What is the loft of a Mizuno JPX-900 Hot Metal 7-iron?
The Mizuno JPX-900 Hot Metal 7-iron has a loft of 31 degrees, with a 61.5-degree lie and a 36.75-inch steel-shaft length.
What is the difference between the JPX-900 Hot Metal and the JPX-900 Forged?
They share the same lofts, lies and lengths, but the Hot Metal is cast from Chromoly 4140M and carries much more offset, 0.179 inches at the 7-iron against 0.132 inches for the forged model.
Can JPX-900 Hot Metal irons be bent for loft and lie?
Yes. Mizuno chose Chromoly 4140M partly because the cast head can still be bent for loft and lie adjustment, which is unusual for a cast game-improvement iron.
Finding a used set
The Mizuno JPX-900 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.
- InTheHoleGolf.com Mizuno JPX-900 Hot Metal Iron Set product page spec table (loft, lie, offset, bounce and length for 4-LW)
- 2ndSwing.com Mizuno JPX 900 Hot Metal Iron Set specification table (independent corroboration of the same figures, stock configuration listed as 4-LW)
- GolfWRX launch article on the JPX-900 Hot Metal and JPX-900 Forged irons (Chromoly 4140M construction, bendable cast head)
- Numbers come from retailer spec tables rather than an archived Mizuno spec sheet, so confidence is medium.
Last reviewed 2026-07-22. Spot an error? [email protected]