Mizuno MS-1 Irons Specifications
Full factory loft, lie and length chart for the Mizuno MS-1 irons, 1980–1990.
- Years produced
- 1980–1990
- Category
- Blade / Muscleback
- Construction
- forged reverse muscle back
- Material
- forged carbon steel
- Set makeup
- 2–SW
Data confidence: low. 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) |
|---|---|---|---|
| 2 | 18 | — | — |
| 3 | 21 | 57 | — |
| 4 | 24 | 58 | — |
| 5 | 27 | 59 | — |
| 6 | 31 | 60 | — |
| 7 | 35 | 61 | — |
| 8 | 39 | 62 | — |
| 9 | 43 | 63 | — |
| PW | 48 | 63 | — |
| SW | 56 | 63 | — |
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 MS-1
The MS-1 opened Mizuno's MS ("Mizuno Staff") line in 1980 and became its longest-running blade, staying in the range for over a decade through many stamping iterations. It is a scotch-blade design with a square toe, a reverse muscle, and essentially zero bounce and zero offset — as traditional as forged irons come, aimed squarely at purists. Lofts run 21 degrees at the 3-iron to a 48-degree pitching wedge, the same ladder Mizuno kept for the MS-11 at the decade's end. Factory lengths were never published in surviving sources, so they are omitted. This model is sometimes dated to the early 1980s generally; vintage-Mizuno references place the launch at 1980.
Stock shafts
- True Temper Dynamic Gold — steel
Related models
- The MS line's closing blade: Mizuno MS-11
- Mizuno's legendary blade of the late 80s: Mizuno Pro TN-87
- Compare: Mizuno MS-1 vs Mizuno MS-11
- Compare: Mizuno MS-1 vs Mizuno Pro TN-87
Frequently asked questions
What is the loft of a Mizuno MS-1 7-iron?
The Mizuno MS-1 7-iron has a loft of 35 degrees and a lie of 61 degrees.
When were Mizuno MS-1 irons made?
The MS-1 launched the Mizuno Staff line in 1980 and stayed in the range for over a decade, with many small stamping changes along the way.
Are Mizuno MS-1 irons forgiving?
No — the MS-1 is a square-toe scotch blade with a reverse muscle and virtually no bounce or offset, one of the most traditional and demanding designs Mizuno has made.
Finding a used set
The Mizuno MS-1 ran from 1980 to 1990 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.
- GolfWRX 'Mizuno MS-1' thread (2021) — a collector's spec list from a vintage-Mizuno reference site: lofts 18/21/24/27/31/35/39/43/48/56 for 2-SW, with lies starting at 57 degrees on the 3-iron and rising one degree per club until the 9-iron through SW, which are all 63 degrees. The 2-iron's lie was not stated and is omitted
- MizunoDBG vintage-Mizuno blog (mizunotp.tech.blog, 'Mizuno MS iron sets') — 1980 launch, 10+ year sales run with many stampings, scotch-blade square-toe design with zero bounce and offset, and the MS line's 'Mizuno Staff' positioning for professionals and better golfers
- Factory lengths, offsets and swing weights were never published in surviving sources and are omitted. The loft ladder matches the factory table for the closing MS-11 of the same line, which supports it, but the primary source is a forum transcription, so confidence is low
Last reviewed 2026-07-29. Spot an error? [email protected]