Retired
- Cover
- Relativity Solid
- Factory finish
- 500/2000 Siaair
- Color
- Blue / Violet / Orange
- Core (15 lb)
- Modified Mastermind Asymmetric
- R.G. / Differential / Bias
16 lb 2.492 0.048 0.013 15 lb 2.504 0.048 0.013 14 lb 2.521 0.048 0.013 13 lb 2.589 0.043 0.011 12 lb 2.612 0.043 0.011 - Release date
- July 12, 2016
- Balls with the same cover
- This is the only ball in the Bowlidex with the Relativity Solid cover.
- Balls with the same core
- These balls have the same 15-lb Modified Mastermind Asymmetric core as the Mastermind Strategy:
- From the manufacturer
Relativity Solid reactive coverstock is Brunswick’s latest advancement in our performance enhancing coverstock technology. Matched with the Mastermind Low RG core, the Mastermind Strategy produces easy length through the heads with outstanding bite in the mid-lane delivering a strong and controllable hook motion on medium to heavy oil lane conditions.
- Status
- Retired. This ball is no longer produced by the manufacturer, but it may still be available at pro shops and online retailers in limited weights.
| Name | Cover | Released | |
 | Mastermind Einstein Brunswick | Relativity Hybrid | Jul 7, 2015 |