Mizuno JPX-850 Irons Specifications
Full factory loft, lie and length chart for the Mizuno JPX-850 irons, 2014–2016.
- Years produced
- 2014–2016
- Category
- Game Improvement Irons
- Construction
- investment cast
- Material
- stainless 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 | 0.23 | -0.5 |
| 5 | 25 | 60.5 | 37.75 | 0.21 | -0.5 |
| 6 | 28 | 61 | 37.25 | 0.19 | -0.5 |
| 7 | 32 | 61.5 | 36.75 | 0.18 | 1 |
| 8 | 36 | 62 | 36.25 | 0.17 | 2 |
| 9 | 40 | 62.5 | 35.75 | 0.15 | 3 |
| PW | 45 | 63 | 35.5 | 0.13 | 4 |
| GW | 50 | 63 | 35.25 | 0.13 | 5 |
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
The JPX-850 was Mizuno's cast game-improvement iron for 2014 to 2016, the generation between the JPX-825 and the first Hot Metal, sold alongside the boron-steel JPX-850 Forged. It uses a deep pocket cavity in the long and mid irons with a thin high-strength face, heavy offset — 0.230 inches at the 4-iron and 0.180 at the 7-iron — and negative measured bounce in the 4- to 6-irons. Lofts match the JPX-825 it replaced, with a 32-degree 7-iron and a 45-degree pitching wedge, and the stock set is 4-iron through gap wedge. Lofts, lies and lengths listed are the men's standard steel-shaft specification.
Stock shafts
- True Temper XP 105 — steel
Related models
- Predecessor: Mizuno JPX-825
- Successor: Mizuno JPX-900 Hot Metal
- Forged model of the same family: Mizuno JPX-850 Forged
- Compare: Mizuno JPX-850 vs Mizuno JPX-900 Hot Metal
Frequently asked questions
What is the loft of a Mizuno JPX-850 7-iron?
The Mizuno JPX-850 7-iron has a loft of 32 degrees, with a 61.5-degree lie and a 36.75-inch steel-shaft length.
What is the difference between the JPX-850 and the JPX-850 Forged?
The JPX-850 is cast stainless steel with a deep pocket cavity and heavy offset — 0.180 inches at the 7-iron against 0.130 for the Forged. Both share a 32-degree 7-iron and a 45-degree pitching wedge.
What clubs come in a JPX-850 set?
The stock range is 4-iron through gap wedge, with the pitching wedge at 45 degrees and the gap wedge at 50 degrees.
Finding a used set
The Mizuno JPX-850 ran from 2014 to 2016 and 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.
- 2ndSwing.com Mizuno JPX 850 Iron Set specification table (loft, lie, offset, bounce and length for 4-GW)
- InTheHoleGolf.com Mizuno JPX-850 Iron Set product page spec table (independent corroboration of the same figures and the 4-GW set makeup; its 5-iron length of 37.25 inches is a typo against 2nd Swing's 37.75, the same error that table carries for the JPX-850 Forged, and 37.75 is used here). True Temper XP 105 heads its shaft list as the stock steel option
- Numbers come from retailer spec tables rather than an archived Mizuno spec sheet, and no swing weights were published, so that key is omitted and confidence is medium
- year_introduced 2014 is the JPX-850 line's autumn 2014 launch; year_discontinued 2016 is the announcement of the successor JPX-900 family
Last reviewed 2026-07-28. Spot an error? [email protected]