Database

Bowling ball specs: every current ball we track

149 current balls from 10 brands, with the coverstock, core, RG and differential each maker publishes. Filter by brand or cover type, sort by any number, and open a ball for what its numbers mean.

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Brand

Cover type

Current bowling balls and their published specs
Ball	Brand	Cover	Core	RG	Diff.	Mass bias	USBC approved
Cove	900 Global	Hybrid reactive	Symmetric	2.480	0.043		2025-07-08
Onyx Polyester	900 Global	Polyester	Symmetric	2.680	0.006
Portal	900 Global	Solid reactive	Asymmetric	2.590	0.050	0.019	2026-09-08
Vengeance	900 Global	Solid reactive	Symmetric	2.460	0.056		2025-12-02
Vengeance Returns	900 Global	Hybrid reactive	Symmetric	2.460	0.056		2026-06-02
Viking Conquest	900 Global	Solid reactive	Asymmetric	2.500	0.050	0.014	2026-01-20
Alert	Brunswick	Solid reactive		2.478	0.037		2025-10-14
Combat Hybrid	Brunswick	Hybrid reactive	Asymmetric	2.502	0.051	0.019	2026-02-10
Combat Solid	Brunswick	Solid reactive		2.502	0.051	0.019	2026-06-30
Crown 78U	Brunswick	Urethane		2.549	0.046		2025-12-02
Crown Victory Pearl	Brunswick	Pearl reactive		2.540	0.045		2026-02-10
Danger Zone	Brunswick	Solid reactive		2.501	0.048
Fury (PK-26 Hybrid Reactive)	Brunswick	Hybrid reactive		2.524	0.038
Fury (PK-26 Pearl Reactive)	Brunswick	Pearl reactive		2.524	0.038
Fury - Emerald / Black	Brunswick	Hybrid reactive		2.524	0.038
Infinity Quest Pearl	Brunswick	Pearl reactive		2.521	0.051	0.010	2026-06-02
Purple Rhino Pro	Brunswick	Solid reactive		2.568	0.032
Rhino	Brunswick	Pearl reactive		2.524	0.030
Strategy	Brunswick	Pearl reactive	Asymmetric	2.509	0.047	0.016	2026-04-07
Strategy Logic	Brunswick	Hybrid reactive		2.509	0.047	0.016	2026-10-13
Warning Alert	Brunswick	Hybrid reactive		2.478	0.037		2026-06-30
Dark Side Curse	DV8	Solid reactive		2.480	0.036		2026-01-06
Double Trouble	DV8	Pearl reactive		2.496	0.045		2026-03-10
Heckler Taunt	DV8	Hybrid reactive		2.504	0.051	0.010	2026-06-02
Intense Collision	DV8	Pearl reactive		2.462	0.052	0.019	2026-06-30
Outsider	DV8	Solid reactive		2.499	0.040	0.020	2026-10-13
Smooth Criminal	DV8	Hybrid reactive		2.471	0.028		2026-10-13
Game Breaker 5	Ebonite	Solid reactive		2.480	0.048
Game Breaker 5 Hybrid	Ebonite	Hybrid reactive	Symmetric	2.480	0.048
Game Breaker 5 Pearl	Ebonite	Pearl reactive		2.480	0.048
Go Time	Ebonite	Solid reactive		2.508	0.054		2026-10-13
Spartan	Ebonite	Solid reactive		2.473	0.053	0.019	2026-01-06
Spartan Pearl	Ebonite	Pearl reactive	Asymmetric	2.473	0.053	0.019	2026-06-30
The Great One	Ebonite	Solid reactive	Symmetric	2.466	0.056	0.027	2026-09-08
Turbo X NU	Ebonite	Other		2.517	0.040		2026-05-05
Turbo X Pearl	Ebonite	Pearl reactive		2.517	0.040		2026-09-08
Arctic Vibe	Hammer	Hybrid reactive		2.510	0.042		2024-04-30
Black Pearl Urethane	Hammer	Urethane		2.650	0.015
Black Widow	Hammer	Polyester		2.480	0.058	0.013
Black Widow 2.0 Hybrid	Hammer	Hybrid reactive		2.500	0.058	0.016
Black Widow 3.0	Hammer	Solid reactive		2.500	0.058	0.016
Black Widow 3.0 Dynasty	Hammer	Solid reactive		2.500	0.058	0.016
Black Widow Mania	Hammer	Pearl reactive		2.500	0.058	0.016
Black Widow Tour V1	Hammer	Hybrid reactive		2.500	0.034	0.016
Blacklist	Hammer	Pearl reactive		2.545	0.047		2026-10-13
Bubblegum Vibe	Hammer	Pearl reactive		2.510	0.042		2025-06-24
Deep Ocean Vibe	Hammer	Solid reactive		2.510	0.042		2026-06-30
Fallout	Hammer	Solid reactive	Symmetric	2.520	0.052		2026-06-30
Full Effect	Hammer	Hybrid reactive		2.470	0.050	0.017	2026-03-10
Hammerhead Pearl	Hammer	Pearl reactive		2.481	0.048		2026-01-06
Nu 2.0	Hammer	Other		2.586	0.027		2025-10-14
Purple Pearl Urethane	Hammer	Urethane	Symmetric	2.650	0.015
Purple Pearl Urethane 78D	Hammer	Urethane		2.632	0.034		2026-03-10
Raw Hammer (Juiced Hybrid)	Hammer	Hybrid reactive		2.537	0.038
Raw Hammer (Juiced Pearl)	Hammer	Pearl reactive		2.537	0.038
Raw Hammer - Black / Grey	Hammer	Solid reactive		2.537	0.038
Reckoning	Hammer	Solid reactive		2.474	0.053	0.016	2026-10-13
Spawn	Hammer	Solid reactive	Asymmetric	2.501	0.050	0.012	2026-05-05
Zero Mercy Hybrid	Hammer	Hybrid reactive		2.524	0.053	0.020	2026-09-08
Zero Mercy Pearl	Hammer	Pearl reactive	Asymmetric	2.524	0.053	0.020	2025-10-14
Zero Mercy Solid	Hammer	Solid reactive		2.524	0.053	0.020	2025-10-14
Zero Mercy Tour	Hammer	Solid reactive		2.469	0.034	0.013	2026-09-08
Apex Jackal	Motiv	Pearl reactive	Asymmetric	2.520	0.055	0.020
Ascend	Motiv	Pearl reactive	Symmetric	2.590	0.023
Aspire	Motiv	Polyester		2.750	0.028
Black Venom	Motiv	Solid reactive	Asymmetric	2.470	0.036	0.013
Evoke Hysteria	Motiv	Pearl reactive	Asymmetric	2.480	0.050	0.015
Evoke Mayhem	Motiv	Solid reactive	Asymmetric	2.480	0.050	0.015
Forge Fuel	Motiv	Solid reactive	Symmetric	2.470	0.055
Frenzy	Motiv	Pearl reactive	Symmetric	2.550	0.030
Hyper Venom	Motiv	Pearl reactive	Symmetric	2.480	0.034
Jackal Ghost V2	Motiv		Asymmetric	2.470	0.054	0.015
Jackal Onyx	Motiv	Solid reactive	Asymmetric	2.470	0.054	0.015
Lethal Venom	Motiv	Solid reactive	Asymmetric	2.470	0.036	0.013
Max Thrill Hybrid	Motiv	Hybrid reactive	Symmetric	2.550	0.037
Max Thrill Pearl	Motiv	Pearl reactive	Symmetric	2.550	0.037
Nebula	Motiv	Pearl reactive	Symmetric	2.500	0.045
Primal Ghost	Motiv	Solid reactive	Symmetric	2.550	0.050
Raptor Pursuit	Motiv	Pearl reactive	Symmetric	2.480	0.055
Raptor Reign	Motiv	Solid reactive	Symmetric	2.480	0.055
Shadow Tank	Motiv	Other	Symmetric	2.570	0.015
Sigma Tour Pearl	Motiv	Pearl reactive	Symmetric	2.470	0.047
Steel Forge	Motiv	Pearl reactive	Symmetric	2.470	0.055
Supra Sport	Motiv	Solid reactive	Symmetric	2.550	0.043
Venom Hysteria	Motiv	Pearl reactive	Symmetric	2.480	0.034
Venom Shock	Motiv	Solid reactive	Symmetric	2.480	0.034
Deep Impact	Radical	Hybrid reactive	Asymmetric	2.480	0.052	0.019	2026-02-03
Evil Eye	Radical	Solid reactive	Symmetric	2.495	0.046		2025-10-14
Evil Eye Pearl	Radical	Pearl reactive	Symmetric	2.495	0.046		2026-06-30
Guru Oracle Pearl	Radical	Pearl reactive	Asymmetric	2.503	0.044	0.018	2026-06-02
Intel Recon Hybrid	Radical	Hybrid reactive	Symmetric	2.483	0.032		2026-10-13
Intel Tour	Radical	Solid reactive	Symmetric	2.483	0.032		2026-06-30
No Doubt Hybrid	Radical	Hybrid reactive	Symmetric	2.485	0.051		2026-06-30
Outer Limits Black Hole	Radical	Solid reactive	Asymmetric	2.499	0.051	0.014	2025-12-30
Revenge Pearl	Radical	Pearl reactive	Symmetric	2.544	0.036		2026-04-13
Revenge Solid	Radical	Solid reactive	Symmetric	2.544	0.036		2026-04-13
The Spy	Radical	Polyester	Asymmetric	2.513	0.053	0.017
Vexed	Radical	Solid reactive	Asymmetric	2.498	0.036	0.012	2026-03-10
Vexed Variant	Radical	Solid reactive	Asymmetric	2.490	0.045	0.015	2026-10-13
Cosmos	Roto Grip	Polyester	Symmetric	2.680	0.006
Gremlin	Roto Grip	Pearl reactive	Asymmetric	2.500	0.056	0.008	2025-06-03
Gremlin Tour-X	Roto Grip	Hybrid reactive	Asymmetric	2.480	0.032	0.010	2026-01-20
Hustle (VTC Pearl)	Roto Grip	Pearl reactive	Symmetric	2.530	0.030
Hustle (VTC Solid)	Roto Grip	Solid reactive	Symmetric	2.530	0.030		2024-01-16
Hustle SOS	Roto Grip	Hybrid reactive	Symmetric	2.530	0.030
Perfect Gem	Roto Grip	Solid reactive	Asymmetric	2.490	0.055	0.017	2026-09-08
RG Jester Clear Polyester	Roto Grip	Polyester	Symmetric	2.690	0.006
Rst Hyperdrive Pearl	Roto Grip	Pearl reactive	Asymmetric	2.510	0.051	0.016	2025-08-05
Transform Pearl	Roto Grip	Pearl reactive	Asymmetric	2.500	0.050	0.015	2026-05-29
Transformer	Roto Grip	Solid reactive	Asymmetric	2.500	0.050	0.015	2025-12-02
Wicked Gremlin	Roto Grip	Solid reactive	Asymmetric	2.500	0.056	0.011	2026-07-07
hyped UP!	Roto Grip	Hybrid reactive	Symmetric	2.490	0.043		2026-03-31
!Q Tour 78/U	Storm	Urethane	Symmetric	2.650	0.035		2023-10-17
!Q Tour Edition	Storm	Solid reactive	Symmetric	2.490	0.035
!Q Tour Sapphire	Storm	Pearl reactive	Symmetric	2.490	0.035
Alpha Crux	Storm	Solid reactive	Asymmetric	2.480	0.052	0.017
Bionic	Storm	Hybrid reactive	Symmetric	2.470	0.050		2026-01-20
Clear Storm Teal	Storm	Polyester	Symmetric	2.800	0.020
Concept	Storm	Pearl reactive	Symmetric	2.590	0.019		2026-01-20
Equinox	Storm	Pearl reactive	Asymmetric	2.470	0.054	0.016	2025-01-07
Equinox Hybrid	Storm	Hybrid reactive	Asymmetric	2.470	0.054	0.016	2026-08-11
Equinox Solid	Storm	Solid reactive	Asymmetric	2.470	0.054	0.016	2025-08-05
Hy-Road	Storm	Hybrid reactive	Symmetric	2.520	0.058
Ice Storm Black-White-Gold	Storm	Polyester	Symmetric	2.720	0.005
Ice Storm Ocean Blue-White	Storm	Polyester	Symmetric	2.680	0.006
Ice Storm Teal-Silver-Graphite	Storm	Polyester	Symmetric	2.680	0.006
Identity	Storm	Pearl reactive	Asymmetric	2.500	0.055	0.009	2025-04-01
Ion Max	Storm	Solid reactive	Asymmetric	2.470	0.055	0.014	2024-07-30
Ion Max Pearl	Storm	Pearl reactive	Asymmetric	2.470	0.053	0.013	2025-08-05
Ion Pro Pearl	Storm	Pearl reactive	Asymmetric	2.470	0.035	0.013	2026-10-13
Ion Pro Solid	Storm	Solid reactive	Asymmetric	2.470	0.035	0.013	2025-05-06
Mix	Storm	Urethane	Symmetric	2.680	0.006
Mix Platinum	Storm	Urethane	Symmetric	2.720	0.005
Monsoon	Storm	Solid reactive	Symmetric	2.530	0.042	0.200	2026-01-06
Next Factor	Storm	Pearl reactive	Asymmetric	2.540	0.050	0.015	2025-11-04
Phaze II	Storm	Solid reactive	Symmetric	2.480	0.051		2016-08-30
Phaze II Pearl	Storm	Pearl reactive	Symmetric	2.480	0.051		2025-10-14
Pitch Black	Storm	Urethane	Symmetric	2.560	0.023
Rocket A.i.	Storm	Pearl reactive	Symmetric	2.520	0.046		2026-03-31
Storm Norm Duke Clear	Storm	Polyester	Symmetric	2.800	0.018
Tropical Surge	Storm	Pearl reactive	Symmetric	2.580	0.024
Tropical Surge Black-Cherry	Storm	Hybrid reactive	Symmetric	2.580	0.024
Typhoon	Storm	Pearl reactive	Symmetric	2.530	0.042		2025-02-04
Kinetic Sapphire Ice	Track	Pearl reactive		2.480	0.040	0.006
Paragon Fire	Track	Solid reactive	Asymmetric	2.486	0.056	0.015
Stealth Mode Hybrid	Track	Hybrid reactive		2.482	0.056
Synthesis	Track	Solid reactive		2.480	0.053	0.020
Synthesis Prime	Track	Pearl reactive		2.480	0.053	0.020
Theorem Delta	Track	Hybrid reactive	Asymmetric	2.473	0.046	0.017

Balls per brand: 900 Global 6, Brunswick 15, DV8 6, Ebonite 9, Hammer 26, Motiv 24, Radical 13, Roto Grip 13, Storm 31, Track 6. Colourways of one ball with identical specs share a row. Blank cells mean the maker doesn't publish that number. Click a column heading to sort.

Where the numbers come from

Every number comes from the maker's own product page, collected on 21 October 2026: stormbowling.com for Storm, Roto Grip and 900 Global, and each brand's own site for the Brunswick group and Motiv. We don't measure balls. Makers don't all say which ball weight their numbers are for. Hammer states 15 pounds, and Storm doesn't say. The USBC column shows the approval date from USBC's Approved Ball List (20 October 2026) only where the list has an exact name match within a year before the maker's release date.

How to read RG and differential

RG (radius of gyration) describes how the core's weight is spread. Storm says "a low RG ball will rev up quickly and roll smoothly," while "a high RG ball delays its revving, offering more length and angular motion down the lane."

Differential "measures the variation in RG across the ball's axis," in Storm's words. "A high differential ball will create a sharper angle of entry into the pins," while a low differential gives "a more predictable, controlled motion."

Mass bias (also called intermediate differential, PSA or ASY) is published for asymmetric cores. Storm describes symmetric cores as having "RG values consistent across all axes" and asymmetric ones as having "varying RG values along different axes."

USBC allows an RG from 2.447 to 2.813 inches and a differential of at most 0.060 inches (Equipment Specifications Manual, March 2026).

How to use the table

Pick the cover type first: it decides how early a ball grips the lane. Solid covers suit fresh and heavier oil, pearls suit medium to dry lanes, and hybrids sit between (Storm; bowling.com). Then compare RG and differential within that type. The breakpoint calculator suggests a cover type for your pattern, and how bowling balls work explains cores and covers in more depth.

Sources: maker product pages (linked on each ball's page); Storm, "Inside The Bowling Ball"; Storm, "The Coverstock"; bowling.com coverstock FAQ; USBC Approved Ball List; USBC Equipment Specifications Manual (March 2026). Checked 21 October 2026.