Track Theorem Delta Bowling Ball The Track Theorem Delta builds on the legacy of one of Track’s most trusted performers by enhancing the benchmark motion that made the original so successful. It delivers the same strong midlane read and smooth, sweeping shape while adding a sharper response to friction for increased backend motion and continuation. Compared to the original Theorem, the Delta is more responsive downlane without sacrificing predictability, making it a versatile, reliable choice for a wide range of lane conditions and bowling styles. Performance Level: Upper Mid Performance Color: Black / Indigo / Blue Core: MC2 Asym Core Type: Asymmetrical Coverstock: Super Response Hybrid (HK22) Cover Type: Hybrid Reactive Finish: 500, 1000, 1500 Siaair/ Factory Compound Lane Condition: Medium to oily Weights: 12 lbs. - 16 lbs. RG: 2.473 (15 lbs.) DIFF: 0.046 (15 lbs.) , INT DIFF: 0.017 Warranty: Limited 2 Years Warranty Reaction: Skid / Flip
