Do the 12 and 13 lb Ebonite Spartan Pearl use the same core as the 14 to 16 lb?
Ebonite Spartan Pearl Bowling Ball
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Open Oct 08, 2026 - 04:47 PM
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Staff Answer
Oct 08, 2026 - 04:47 PM
No. Ebonite lists different numbers for the lighter weights: the 15 lb Ebonite Spartan Pearl is 2.473 RG and .053 differential, while the 13 lb is 2.597 RG and .041 differential and the 12 lb is 2.593 RG and .041 differential. Those are the numbers of a different core shape, and the lower differential means less track flare, so the 12 and 13 lb roll smoother and hook less than the 14 to 16 lb. The full table is on the product page.
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Ebonite Spartan Pearl Bowling Ball
What should I know about the Spartan Pearl? • Asymmetric Iron Fist V2 Core for high flare and a defined breakpoint • HK22C2 Optimize Pearl cover at a 500, 1000, 1500 Siaair and Factory Compound finish for length and an angular backend • A versatile asymmetric for medium to oily lanes...
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