Epon AF-307 Irons Specifications
Full factory loft, lie and length chart for the Epon AF-307 irons, 2025–present.
- Years produced
- 2025–present
- Category
- Players Irons
- Construction
- forged (S20C carbon steel with tungsten weights on the toe and neck sides)
- Material
- S20C soft carbon steel with tungsten inner weights
- Set makeup
- 4–PW
Loft, lie & length chart
| Club | Loft (°) | Lie (°) | Length (in) | Offset (in) |
|---|---|---|---|---|
| 4 | 23 | 60.5 | 38.5 | 0.138 |
| 5 | 26 | 61 | 38 | 0.13 |
| 6 | 29 | 61.5 | 37.5 | 0.122 |
| 7 | 32 | 62 | 37 | 0.114 |
| 8 | 36 | 62.5 | 36.5 | 0.106 |
| 9 | 40 | 63 | 36 | 0.098 |
| PW | 45 | 63.5 | 35.5 | 0.087 |
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.
Length note: Epon states that club length is measured by the 60-degree method. The lengths here are Epon's own published figures; the AF-306 page on this site uses a Japanese dealer's assembly lengths, which run a quarter-inch shorter, so the two charts are not directly comparable.
Loft progression
About the Epon AF-307
The AF-307 is Epon's compact forged cavity back, announced on 31 January 2025 and on sale from 21 February 2025 as the replacement for the AF-306. Epon is the house label of Endo Manufacturing in Tsubame, Niigata. The head is forged from S20C carbon steel with tungsten placed on both the toe side and the neck side, which Epon says raises the moment of inertia while shortening the centre-of-gravity distance for easier face rotation; the face is taller than before and the blade is shaped to look lower at the neck. Against the AF-306 the 9-iron and pitching wedge are one degree stronger, at 40 and 45 degrees, with the 4- through 8-irons unchanged. The figures below are Epon's own chart for the N.S.PRO MODUS3 TOUR 105 (S) steel build; offsets are converted from Epon's millimetre figures.
Stock shafts
- Nippon N.S.PRO MODUS3 TOUR 105 — steel · flexes: S
Related models
Frequently asked questions
What is the loft of an Epon AF-307 7-iron?
The Epon AF-307 7-iron has a loft of 32 degrees, with a 62-degree lie and a 37-inch length in the N.S.PRO MODUS3 TOUR 105 steel build.
How do the Epon AF-307 lofts differ from the AF-306?
The 4-iron through 8-iron are the same, from 23 to 36 degrees. The AF-307 9-iron is 40 degrees against 41, and the pitching wedge is 45 degrees against 46. Lies and offsets are unchanged.
When was the Epon AF-307 released?
Epon announced it on 31 January 2025 and put it on sale on 21 February 2025 through its Niigata direct store and authorised dealers.
Is the Epon AF-307 forged?
Yes. It is forged from S20C carbon steel, with tungsten weights on the toe and neck sides of the head.
Where it sits in the lineup
Introduced in 2025, the Epon AF-307 is a current players set in the Epon range as of September 2026, with no replacement announced. It replaced the Epon AF-306. New sets are built to the standard lofts, lies and lengths in the chart above, though a fitting can move any of them — so confirm the numbers on the order sheet. Used sets appear on eBay, 2nd Swing and Golf Avenue, and should be measured against this chart before buying.
- Epon's own AF-307 product page, Specs table (epongolf.co.jp, retrieved 29 September 2026) - supplied every loft, lie, offset and length above for the #4 through PW, the N.S.PRO MODUS3 TOUR 105 (S) build with a 409 g total weight at the 5-iron and D1.5 swing weight, the 'Carbon steel (S20C) Forged / Tungsten inside' head description and the statement that club length is measured by the 60-degree method. Offsets are published in millimetres (3.5 mm at the 4-iron down to 2.2 mm at the PW) and converted to inches here.
- Epon press release 'AF-307を新発売（2025.02.21）' dated 31 January 2025 (epongolf.co.jp, retrieved 29 September 2026) - fixes the announcement date of 31 January 2025 and the on-sale date of 21 February 2025, and describes the tungsten on the toe and neck sides, the shorter centre-of-gravity distance, the taller face and the blade shaping.
- Swing weight is published once for the build (D1.5) rather than per club, so the per-club key is omitted. Bounce is not published.
- Status check, 29 September 2026: confirmed as a current model with no replacement announced. The AF-307 has its own page among Epon's current products (epongolf.co.jp) and no later AF-300-series release appears in Epon's press releases (epongolf.co.jp).
Last updated 29 September 2026. Spot an error? info@loftchart.com