Mizuno MX-300 Irons Specifications
Full factory loft, lie and length chart for the Mizuno MX-300 irons, 2010–2012.
- Years produced
- 2010–2012
- Category
- Players Irons
- Construction
- Grain Flow Forged with an undercut cavity
- Material
- 1025E Pure Select mild carbon steel
- Set makeup
- 3–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 |
|---|---|---|---|---|---|
| 3 | 20 | 59.5 | 38.75 | 0.171 | 1 |
| 4 | 23 | 60 | 38.25 | 0.161 | 2 |
| 5 | 26 | 60.5 | 37.75 | 0.152 | 2 |
| 6 | 29 | 61 | 37.25 | 0.142 | 2 |
| 7 | 33 | 61.5 | 36.75 | 0.132 | 3 |
| 8 | 37 | 62 | 36.25 | 0.122 | 4 |
| 9 | 41 | 62.5 | 35.75 | 0.112 | 5 |
| PW | 45 | 63 | 35.5 | 0.102 | 6 |
| GW | 50 | 63 | 35.25 | 0.093 | 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 MX-300
The MX-300 is the MX line at its most player-oriented: a Grain Flow Forged undercut cavity built without the offset and sole width the rest of the MX range carried, so it reads as an MP blade at address while keeping a forgiving cavity behind the face. The sole is dual-cambered to cut turf drag. Lofts are traditional — 33 degrees at the 7-iron, 45 at the pitching wedge — and the set extends to a 50-degree gap wedge. Figures are the men's standard steel build.
Stock shafts
- True Temper Dynalite Gold XP — steel · flexes: R300, S300
Related models
- Earlier MX iron: Mizuno MX-23
- Mizuno's players cavity back of the same era: Mizuno MP-53
- Distance iron of the same era: Mizuno JPX-800
- Compare: Mizuno MX-300 vs Mizuno JPX-800
- Compare: Mizuno MX-300 vs Mizuno MP-53
Frequently asked questions
What is the loft of a Mizuno MX-300 7-iron?
The Mizuno MX-300 7-iron has a loft of 33 degrees, a lie of 61.5 degrees and a steel-shaft length of 36.75 inches.
When were Mizuno MX-300 irons made?
The MX-300 was released in 2010, the last of Mizuno's MX line before the JPX name took over that part of the range.
Is the Mizuno MX-300 forged?
Yes — Grain Flow Forged from 1025E Pure Select mild carbon steel, with an undercut cavity behind the face.
How much offset does a Mizuno MX-300 have?
0.171 inches at the 3-iron down to 0.102 at the pitching wedge, noticeably less than the MX-17 and MX-23 that preceded it.
Finding a used set
The Mizuno MX-300 ran from 2010 to 2012 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.
- thesandtrap.com 'Mizuno MX-300 Iron Review' — the full loft, length, lie, bounce and offset table for the 3-iron through gap wedge, the 4-iron-to-gap-wedge stock set, the Dynalite Gold XP stock shaft and the 2010 release year.
- Independent corroboration: a second published copy of the same chart (surfaced via golfbidder and todays-golfer MX-300 listings) matches club for club on loft, length, lie, bounce and offset.
- Note: swing weight was not published in the sources consulted and is omitted rather than estimated.
Last reviewed 2026-07-28. Spot an error? [email protected]