Compare the specs of the Brunswick Nirvana and Brunswick Mastermind Einstein 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 | Nirvana | Mastermind Einstein |
| Cover Name | ECS (Enhanced Composite Segmentation) | Relativity Hybrid Reactive |
| Cover Type | Reactive Solid | Reactive Hybrid |
| Box Finish | 500 / 1500 SiaAir | 500 / 2000 / 4000 SiaAir |
| Color | Red / Blue / Violet Solid | Red / Silver / Blue |
| Core Name | Nirvana Ultra Low RG Asymmetrical | Modified Mastermind Asymmetric |
| Core Type | Asymmetrical | Asymmetrical |
| RG | 2.477 | 2.504 |
| Total Diff. | 0.054 | 0.048 |
| Int. Diff. | 0.013 | 0.013 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |