Details

The game has changed and so should we. Stepping back, we realized amateurs and professionals around the world have been clamoring for a heavy-rolling, fast-migrating core akin to one of the most famous of all-time: The Shape-Lock HD Core. This shape can power through just about anything. “HD” is short for high density, which lowers the RG and raises the differential of the weight block. And with SPEC at the helm, expect heavy roll with no shortage of higher scores and more strikes.
SPEC Solid Coverstock
SPEC stands for “Storm Performance Enhanced Coverstock”. The intent behind this formula was to create something that withstands the rigors every bowling ball endures each time it takes a trip down the lane; namely, the friction and oil it encounters. With SPEC, you can expect consistent performance that is as tireless as it is dynamic.
Shape-Lock HD Core

This shape can power through just about anything. “HD” is short for high density, which lowers the RG and raises the differential of the weight block. A higher differential translates to more flare potential, so every time the ball makes a rotation it exposes a fresh portion of coverstock material to the oil.
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Similar Balls
Ball | Brand | Comparison Grade | Coverstock | Core | RG | Diff | MB Diff | US/Overseas Release | Discontinued | |
---|---|---|---|---|---|---|---|---|---|---|
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Gravity Evolve | ![]() |
SPEC SolidSolid Reactive | Shape-Lock HDAsymmetric | 2.480 | 0.052 | 0.020 | |||
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Proton PhysiX | ![]() |
A | NeX SolidSolid Reactive | AtomicAsymmetric | 2.480 | 0.053 | 0.017 | ||
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Sure Lock | ![]() |
A | GI-17 SolidSolid Reactive | RAD-XAsymmetric | 2.480 | 0.054 | 0.018 | ||
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Super Nova | ![]() |
A | NeX SolidSolid Reactive | IgnitionAsymmetric | 2.490 | 0.052 | 0.019 | ||
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Reality | ![]() |
A | S84 Response SolidSolid Reactive | DisturbanceAsymmetric | 2.490 | 0.052 | 0.018 | ||
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Crux Prime | ![]() |
A | SPEC SolidSolid Reactive | CatalystAsymmetric | 2.500 | 0.052 | 0.017 | ||
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Halo | ![]() |
A- | MicroTrax-S18Solid Reactive | CentrumAsymmetric | 2.490 | 0.050 | 0.018 | ||
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Alpha Crux | ![]() |
A- | GI-16 SolidSolid Reactive | CatalystAsymmetric | 2.500 | 0.052 | 0.017 | ||
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Intimidator | ![]() |
A- | Inciter MaxSolid Reactive | AssailantAsymmetric | 2.481 | 0.051 | 0.016 | ||
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Instigator | ![]() |
A- | Inciter SolidSolid Reactive | AssailantAsymmetric | 2.481 | 0.051 | 0.016 | ||
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Zenith | ![]() |
A- | A.X.H. SolidSolid Reactive | ZenithAsymmetric | 2.485 | 0.052 | 0.019 | ||
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Rip'D Solid | ![]() |
A- | Aggression Solid CFISolid Reactive | Rip'DAsymmetric | 2.480 | 0.054 | 0.014 | ||
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DNA | ![]() |
A- | EXO SolidSolid Reactive | SupercoilAsymmetric | 2.470 | 0.053 | 0.023 | ||
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Mako | ![]() |
A- | QR-10 SolidSolid Reactive | MakoAsymmetric | 2.480 | 0.053 | 0.014 | ||
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Trail Blazer Solid | ![]() |
A- | MOtion Magic SolidSolid Reactive | Trail BlazerAsymmetric | 2.484 | 0.052 | 0.020 | ||
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Kingpin Rule | ![]() |
A- | ECA-XR SolidSolid Reactive | Kingpin Ultra Low RGAsymmetric | 2.483 | 0.055 | 0.020 | ||
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Pitbull Bark | ![]() |
A- | Composite Fang MaxSolid Reactive | PitbullAsymmetric | 2.486 | 0.055 | 0.020 | ||
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Big Bro Flexin | ![]() |
A- | Reverie 3 (RVR 3) SolidSolid Reactive | DominanceAsymmetric | 2.484 | 0.054 | 0.021 | ||
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Lit | ![]() |
A- | Reflex XSSolid Reactive | LitAsymmetric | 2.470 | 0.052 | 0.020 | ||
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Pitbull Bite | ![]() |
A- | Composite Fang SolidSolid Reactive | PitbullAsymmetric | 2.486 | 0.055 | 0.020 | ||
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Precision Solid | ![]() |
A- | Prime SolidSolid Reactive | Precision SD (Single Density)Asymmetric | 2.490 | 0.054 | 0.020 | ||
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Kingpin Max | ![]() |
A- | ECA-X SolidSolid Reactive | Kingpin Ultra Low RGAsymmetric | 2.483 | 0.055 | 0.020 | ||
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Informer | ![]() |
A- | S. H. A. R. P. / TS-1Solid Reactive | InformerAsymmetric | 2.477 | 0.051 | 0.019 | ||
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Incognito | ![]() |
A- | S. H. A. R. P.Solid Reactive | IncognitoAsymmetric | 2.487 | 0.053 | 0.017 | ||
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Strata | ![]() |
A- | QR-11 SolidSolid Reactive | StrataAsymmetric | 2.475 | 0.050 | 0.017 |