Motiv Sigma Tour Pearl Bowling Ball Review

The Motiv Sigma Tour Pearl marks the return of the Sigma core for the first time in a non-ExJ ball since the Rogue Assassin from 2019. This symmetrical core design has a lower RG (2.47″) with a medium-high differential of 0.047″. It is wrapped with the new Atomic Propulsion Pearl coverstock. We saw this ball want to rev up really nicely in the midlane without hooking early, storing its energy for a big move at the breakpoint. It was strong and continuous at the back end, but it didn’t get too sideways, even later in the session. All three bowlers saw their best reactions come on the medium oil test pattern with this new 5000-grit box-finished bowling ball.

Stroker

Stroker had the best reaction and pin carry on the fresh medium oil pattern out of our three bowlers. He was able to play straight up the second arrow, right in his comfort zone, and the ball was excellent from this part of the lane. Even lower RG balls tend to rev up a bit later for him, which sometimes keeps them from getting into a heavy enough roll to drive through the pins when they get to the pocket. That wasn’t the case with this ball. He saw the Sigma Tour Pearl pick up very well, especially for a pearl coverstock. It cleared the front very nicely, picked up in the midlane, and drove very strongly through the pins. When bowling by himself with the Sigma Tour Pearl, the ball didn’t change the pattern much at all, allowing him to stay in the same part of the lane. Once duller balls started also being used, he needed to move his laydown point farther left to start opening his angles in the front part of the lane. His reaction was just as good after the transition