Bridgestone J40 Cavity Back vs Bridgestone J15 Cavity Back
Side-by-side factory specifications. Differing values are highlighted.
Bridgestone J40 Cavity Backforged · 1020 mild carbon steelBridgestone J15 Cavity Backforged · forged carbon steel
Specification comparison
| Club | J40 Cavity Back loft | J15 Cavity Back loft | J40 Cavity Back lie | J15 Cavity Back lie | J40 Cavity Back length | J15 Cavity Back length |
|---|---|---|---|---|---|---|
| 3 | 21 | 20 | 60 | 60.5 | 38.75 | 39 |
| 4 | 24 | 22.5 | 61 | 61 | 38.25 | 38.5 |
| 5 | 27 | 25 | 62 | 61.5 | 37.75 | 38 |
| 6 | 31 | 28 | 62.5 | 62 | 37.25 | 37.5 |
| 7 | 35 | 32 | 63 | 62.5 | 36.75 | 37 |
| 8 | 39 | 36 | 63.5 | 63 | 36.25 | 36.5 |
| 9 | 43 | 41 | 64 | 63.5 | 35.75 | 36 |
| PW | 47 | 46 | 64.5 | 64 | 35.5 | 35.75 |
Highlighted cells differ between the two sets. Lofts and lies are factory standard.
Which should you choose?
The J15 Cavity Back is the stronger-lofted set — up to 3° stronger than the J40 Cavity Back 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: Bridgestone J40 Cavity Back specs and Bridgestone J15 Cavity Back specs.