Motiv Sigma Bowling Ball Core

The science behind the vicious attack on the pins is the Sigma™ inner core. It has been precisely engineered to deliver an RG of 2.47 with a differential of .047 (15# ball).

The Reverb™ outer core of the Sigma is a low-density polyester resin with pin piercing hardness and strength. Rather than absorb impact energy, this outer core reverberates energy as it explodes through the pins.

Core Type – Symmetric

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