What cover and core does the Motiv Sigma Tour Pearl use?
Motiv Sigma Tour Pearl Bowling Ball
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Open Oct 08, 2026 - 02:25 PM
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Staff Answer
Oct 08, 2026 - 02:25 PM
The Sigma Tour Pearl pairs Motiv's Atomic Propulsion Pearl Reactive coverstock, at a 5000-grit finish, with the symmetric Sigma Core. At 15 pounds the core measures a 2.47 RG and a .047 differential, per the manufacturer's specs. Like all of Motiv's high performance line, it is made in the U.S.A.
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Motiv Sigma Tour Pearl Bowling Ball
What should I know about the Sigma Tour Pearl? Symmetric Sigma Core for a readable, repeatable benchmark motion Atomic Propulsion Pearl Reactive cover at a 5000-grit finish A tour-caliber mid-arsenal benchmark for medium to medium-heavy oil
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