Mizuno JPX-850 Forged Irons Specifications
Full factory loft, lie and length chart for the Mizuno JPX-850 Forged irons, 2014–2016.
- Years produced
- 2014–2016
- Category
- Players Irons
- Construction
- forged
- Material
- 1025E boron-infused carbon steel
- Set makeup
- 4–GW
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 | 22 | 60 | 38.25 | 0.16 | 1 |
| 5 | 25 | 60.5 | 37.75 | 0.15 | 2 |
| 6 | 28 | 61 | 37.25 | 0.14 | 2 |
| 7 | 32 | 61.5 | 36.75 | 0.13 | 3 |
| 8 | 36 | 62 | 36.25 | 0.12 | 4 |
| 9 | 40 | 62.5 | 35.75 | 0.11 | 5 |
| PW | 45 | 63 | 35.5 | 0.1 | 6 |
| GW | 50 | 63 | 35.25 | 0.09 | 7 |
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-850 Forged
The JPX-850 Forged was the first Mizuno iron to use boron-infused 1025E carbon steel, which raised the strength of the material enough for Mizuno to thin the face while keeping the Grain Flow Forged process and a bendable hosel. It is a moderate cavity-back players iron with a 0.130-inch 7-iron offset, sold as a 4-iron through gap wedge set. Lofts sit one degree weaker than the JPX-900 Forged that followed it, with a 32-degree 7-iron and a 45-degree pitching wedge. All figures are the men's standard steel-shaft specification.
Stock shafts
- True Temper XP 115 — steel
Related models
- Predecessor: Mizuno JPX-825 Pro
- Successor: Mizuno JPX-900 Forged
- Cast model of the same family: Mizuno JPX-850
- Compare: Mizuno JPX-850 Forged vs Mizuno JPX-825
- Compare: Mizuno JPX-850 Forged vs Mizuno JPX-825 Pro
- Compare: Mizuno JPX-850 Forged vs Mizuno JPX-900 Forged
- Compare: Mizuno JPX-850 Forged vs Mizuno JPX-850
- Compare: Mizuno JPX-850 Forged vs Mizuno JPX EZ Forged
Frequently asked questions
What is the loft of a Mizuno JPX-850 Forged 7-iron?
The Mizuno JPX-850 Forged 7-iron has a loft of 32 degrees, with a 61.5-degree lie and a 36.75-inch steel-shaft length.
What is boron steel in the JPX-850 Forged?
Mizuno added boron to its 1025E carbon steel to raise tensile strength, which allowed a thinner forged face without losing the ability to bend the hosel for loft and lie adjustment.
How do JPX-850 Forged lofts compare with the JPX-900 Forged?
The JPX-850 Forged is one degree weaker through the long and mid irons: 22 degrees at the 4-iron and 32 at the 7-iron, against 21 and 31 for the JPX-900 Forged. Both share a 45-degree pitching wedge.
Finding a used set
The Mizuno JPX-850 Forged ran from 2014 to 2016 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.
- InTheHoleGolf.com Mizuno JPX-850 Forged Iron Set product page spec table (loft, lie, offset, bounce, length for 4-GW, plus the stock shaft list)
- 2ndSwing.com Mizuno JPX 850 Forged Iron Set specification table (independent corroboration of the same loft/lie/offset/bounce figures, and correcting a 5-iron length typo on the InTheHoleGolf table to 37.75 inches)
- Archived Mizuno USA JPX-850 Forged product page, mizunousa.com/Golf/Irons/JPX-Irons/JPX-850-Forged (2015 snapshot via archive.org) — confirms the model existed in the 2015 line, but that snapshot carries no spec table, so confidence is medium
Last updated 28 July 2026. Spot an error? info@loftchart.com