Brunswick
The Brunswick Ultimate Defender is a hybrid reactive bowling ball with the Portal X core. RG 2.473 and differential 0.054 at 15 lb. No longer made.
Keep your arsenal in BowlingMaat: weight, layout, surface and maintenance of every ball in one place. Free, and no games to log.
|
Weight
|
RG
|
Diff
|
Int. diff
|
|---|---|---|---|
| 16 lb | 2.489 | 0.046 | 0.013 |
| 15 lb | 2.473 | 0.054 | 0.015 |
| 14 lb | 2.498 | 0.054 | 0.015 |
| 13 lb | 2.597 | 0.041 | 0.014 |
| 12 lb | 2.593 | 0.041 | 0.014 |
Current balls from any brand with the closest RG, differential, cover and lane condition: an alternative, or a second ball that reacts alike.