Compare the specs of the Brunswick Ultimate Defender and Brunswick Endeavor side by side in the ball comparison table below. To view the full bowling ball review for one of these balls, click the ball name link in the table below.
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| Brand | Brunswick | Brunswick |
| Ball Name | Ultimate Defender | Endeavor |
| Cover Name | HK22 - ACT 3.0 Hybrid | Activator Plus 3.0 Pearl |
| Cover Type | Reactive Hybrid | Reactive Pearl |
| Box Finish | 500 / 2000 SiaAir | 500 / 1000 / 1500 SiaAir / Crown Factory Compound |
| Color | Violet / Pink / Navy | Sky Blue / Silver |
| Core Name | Portal X | Tiered Hexagon |
| Core Type | Asymmetrical | Symmetrical |
| RG | 2.473 | 2.540 |
| Total Diff. | 0.054 | 0.045 |
| Int. Diff. | 0.015 | 0.000 |
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