Motiv Gear Drive Bowling Ball Core
The Gear Drive™ inner core is a strong symmetric core with a low RG for maximum revs and a moderate diff to control track flare and shot burn-out.
The Reverb™ outer core of the GT1 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