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.
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
- Successor: Mizuno JPX-919 Forged
- Next JPX forged iron: Mizuno JPX-900 Forged
- Cast JPX iron of the same era: Mizuno JPX-825
- Compare: Mizuno JPX-850 Forged vs Mizuno JPX-825
- Compare: Mizuno JPX-850 Forged vs Mizuno JPX-900 Forged
- Compare: Mizuno JPX-850 Forged vs Mizuno JPX-919 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 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-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 reviewed 2026-07-22. Spot an error? [email protected]