Mizuno MX-300 vs Mizuno JPX-800
Side-by-side factory specifications. Differing values are highlighted.
Mizuno MX-300Grain Flow Forged with an undercut cavity · 1025E Pure Select mild carbon steelMizuno JPX-800investment cast, split construction across the set · stainless steel with a Hot Metal face
Specification comparison
| Club | MX-300 loft | JPX-800 loft | MX-300 lie | JPX-800 lie | MX-300 length | JPX-800 length |
|---|---|---|---|---|---|---|
| 3 | 20 | — | 59.5 | — | 38.75 | — |
| 4 | 23 | 22 | 60 | 60 | 38.25 | 38.25 |
| 5 | 26 | 25 | 60.5 | 60.5 | 37.75 | 37.75 |
| 6 | 29 | 28 | 61 | 61 | 37.25 | 37.25 |
| 7 | 33 | 32 | 61.5 | 61.5 | 36.75 | 36.75 |
| 8 | 37 | 36 | 62 | 62 | 36.25 | 36.25 |
| 9 | 41 | 40 | 62.5 | 62.5 | 35.75 | 35.75 |
| PW | 45 | 44 | 63 | 63 | 35.5 | 35.5 |
| GW | 50 | 49 | 63 | 63 | 35.25 | 35.25 |
| SW | — | 55 | — | 63 | — | 35.25 |
Highlighted cells differ between the two sets. Lofts and lies are factory standard.
Which should you choose?
The JPX-800 is the stronger-lofted set — up to 1° stronger than the MX-300 on matching clubs. Expect longer carry per numbered iron but a flatter descent angle; gapping at the wedge end is where that shows up.
Both charts are reproduced in full on their own pages: Mizuno MX-300 specs and Mizuno JPX-800 specs.