Bridgestone J38 Cavity Back vs Bridgestone J40 Cavity Back
Side-by-side factory specifications. Differing values are highlighted.
Bridgestone J38 Cavity Backmidsize forged with a magnesium-composite cavity insert · 1020 carbon steel body, magnesium composite insertBridgestone J40 Cavity Backforged · 1020 mild carbon steel
Specification comparison
| Club | J38 Cavity Back loft | J40 Cavity Back loft | J38 Cavity Back lie | J40 Cavity Back lie | J38 Cavity Back length | J40 Cavity Back length |
|---|---|---|---|---|---|---|
| 3 | 21 | 21 | 60 | 60 | 38.75 | 38.75 |
| 4 | 24 | 24 | 61 | 61 | 38.25 | 38.25 |
| 5 | 27 | 27 | 62 | 62 | 37.75 | 37.75 |
| 6 | 31 | 31 | 62.5 | 62.5 | 37.25 | 37.25 |
| 7 | 35 | 35 | 63 | 63 | 36.75 | 36.75 |
| 8 | 39 | 39 | 63.5 | 63.5 | 36.25 | 36.25 |
| 9 | 43 | 43 | 64 | 64 | 35.75 | 35.75 |
| PW | 47 | 47 | 64.5 | 64.5 | 35.5 | 35.5 |
Highlighted cells differ between the two sets. Lofts and lies are factory standard.
Which should you choose?
The J38 Cavity Back and J40 Cavity Back share the same lofts on every club on file, so the difference is in head construction, feel and forgiveness rather than trajectory.
Both charts are reproduced in full on their own pages: Bridgestone J38 Cavity Back specs and Bridgestone J40 Cavity Back specs.