Bowling ball cores · Ebonite

Ebonite Bowling Ball Cores

Every Ebonite core in a ball we sell, with its RG, differential and mass bias, on one map

Ebonite puts 6 different cores into the 12 Ebonite balls we have in stock today: 3 symmetric and 3 asymmetric. The newest is the Ebonite Iron Fist V2 Core. The strongest flare comes from the Ebonite Centrex Symmetrical Mass Bias Core (differential 0.056), and the earliest-revving is the Ebonite Centrex Symmetrical Mass Bias Core (RG 2.466). Every core below links to its own page with specs by weight and the balls built on it.

Not sure? Take the Ball FinderUpdated October 16, 2026

  • 6 cores in stock
  • 3 symmetric, 3 asymmetric
  • 12 balls in stock
  • 27 cores out of stock

The Ebonite core map

Where Ebonite’s cores sit on RG and differential against every other core we stock. Lower and left revs early with less flare; up and right saves energy and flares more.

DV8 Larceny Core, RG 2.471, diff 0.028DV8 Renegade Core, RG 2.499, diff 0.040Track I-Core Gen4, RG 2.480, diff 0.053Brunswick Vintage Light Bulb Low RG Core, RG 2.568, diff 0.032Brunswick Dual Centric Core, RG 2.509, diff 0.047Hammer Stacked LED Core, RG 2.545, diff 0.047Hammer Vindicator Core, RG 2.474, diff 0.053Radical Vexed Variant Asymmetric Core, RG 2.490, diff 0.045Radical Modified Intel Symmetric Core, RG 2.483, diff 0.032Motiv Affliction V2 Core, RG 2.480, diff 0.055Storm Element Tour A.I. Core, RG 2.470, diff 0.035900 Global Conduit A.I. Core, RG 2.590, diff 0.050Roto Grip GEM A.I. Core, RG 2.490, diff 0.057Hammer Obsession Tour Core, RG 2.469, diff 0.034Hammer Super Offset Core, RG 2.524, diff 0.053Hammer Gas Mask Core, RG 2.500, diff 0.058Motiv Excel Core, RG 2.550, diff 0.030Motiv Detonator Core, RG 2.470, diff 0.055Storm Solarion A.I. Core, RG 2.480, diff 0.054SWAG Insanity Symmetric Core, RG 2.520, diff 0.034SWAG Fusion Core, RG 2.540, diff 0.036SWAG Watcher Symmetric Core, RG 2.510, diff 0.048SWAG Dragon Asymmetric Core, RG 2.490, diff 0.050SWAG Executioner Asymmetric Core, RG 2.500, diff 0.051Motiv Predator V2 Core, RG 2.470, diff 0.054Storm C3 Centripetal Control Core, RG 2.490, diff 0.029Roto Grip Rondure MaxD Core, RG 2.500, diff 0.058Hammer Vibe Core, RG 2.510, diff 0.042Hammer Aftermath Core, RG 2.520, diff 0.052Brunswick Alert Core, RG 2.478, diff 0.037Brunswick Rampart Core, RG 2.502, diff 0.051DV8 Collision Core, RG 2.462, diff 0.052Track MC2 Asym Core, RG 2.473, diff 0.046Radical Evil Eye Symmetric Core, RG 2.495, diff 0.046Radical No Doubt Symmetric Core, RG 2.485, diff 0.051Storm Surge Core, RG 2.580, diff 0.024Roto Grip Hyped UP Core, RG 2.500, diff 0.042Roto Grip Morph-Wing Core, RG 2.510, diff 0.051Brunswick Fury Core, RG 2.524, diff 0.038Motiv Sigma Core, RG 2.470, diff 0.047Roto Grip Hustle Core, RG 2.530, diff 0.030900 Global Blast A.I. Core, RG 2.470, diff 0.055900 Global Strobe A.I. Core, RG 2.510, diff 0.052Radical Guru Core, RG 2.503, diff 0.044Track I-CORE 3.0, RG 2.486, diff 0.056DV8 Unholy Core, RG 2.504, diff 0.051Brunswick Infinity Core, RG 2.521, diff 0.051Storm Catalyst A.I. Core, RG 2.480, diff 0.053Hammer Gauntlet Core, RG 2.501, diff 0.050Hammer Raw Hammer Core, RG 2.537, diff 0.038Storm Atmos A.I. Core, RG 2.530, diff 0.042Storm Booster Core, RG 2.540, diff 0.046Track Shuttle Core, RG 2.480, diff 0.040Brunswick Light Bulb Core, RG 2.524, diff 0.030Radical Sneak Attack Core, RG 2.544, diff 0.036Motiv Gear Core, RG 2.480, diff 0.034Hammer Huntsman Core, RG 2.470, diff 0.050Hammer Super LED Core, RG 2.632, diff 0.034DV8 Dualistic Core, RG 2.496, diff 0.045Radical Vexed Asymmetric Core, RG 2.498, diff 0.036Motiv Quadfire Core, RG 2.550, diff 0.043Track Stealth Core, RG 2.482, diff 0.056Brunswick Tiered Hexagon Core, RG 2.540, diff 0.045Columbia 300 Piranha Core, RG 2.554, diff 0.043Storm Torsion A.I. Core, RG 2.470, diff 0.050Storm Element Max A.I. Core, RG 2.470, diff 0.055Storm Radius Core, RG 2.610, diff 0.020Roto Grip Rondure Tour X Core, RG 2.480, diff 0.034SWAG Unreal Core, RG 2.510, diff 0.047SWAG Craze Core, RG 2.520, diff 0.030SWAG Serpent Asymmetric Core, RG 2.510, diff 0.048Radical Torpedo Asymmetric Core, RG 2.480, diff 0.052Motiv Overload Core, RG 2.480, diff 0.050DV8 Duality Core, RG 2.480, diff 0.036Hammer Spheroid Core, RG 2.480, diff 0.048Radical Outer Limits Asymmetric Core, RG 2.499, diff 0.051Motiv Apex Predator Core, RG 2.520, diff 0.055Brunswick Danger Zone Core, RG 2.501, diff 0.048Storm RAD-TQ Core, RG 2.560, diff 0.051Storm Velocity Core, RG 2.480, diff 0.051Hammer Modified LED Core, RG 2.586, diff 0.027Epic Spark Core, RG 2.540, diff 0.049Motiv Hadron Dual Density Core, RG 2.500, diff 0.045Track Criterion ID Core, RG 2.496, diff 0.047Brunswick Zone Asymmetric Core, RG 2.478, diff 0.048Roto Grip Rocker A.I. Core, RG 2.480, diff 0.050Motiv Flux Core, RG 2.570, diff 0.015DV8 Mantra Core, RG 2.498, diff 0.047Hammer Gas Mask Low Diff Core, RG 2.500, diff 0.034Roto Grip RST A.I. Core, RG 2.520, diff 0.055Motiv Impulse V2 Core, RG 2.550, diff 0.050SWAG APX V1 Core, RG 2.500, diff 0.042SWAG Judge Core, RG 2.490, diff 0.052900 Global Magna A.I. Core, RG 2.490, diff 0.044Columbia 300 Pulse PowerCOR Core, RG 2.468, diff 0.045KR Strikeforce Launch Core, RG 2.530, diff 0.047900 Global Ellipse Asymmetric A.I. Core, RG 2.480, diff 0.050Motiv Halogen Core, RG 2.550, diff 0.037Storm C3 A.I. Core, RG 2.480, diff 0.031Motiv Gear APG Core, RG 2.470, diff 0.036Radical Snapshot Symmetric Core, RG 2.523, diff 0.050Hammer High Rev Offset Core, RG 2.489, diff 0.053Hammer Huntsman Tour Core, RG 2.472, diff 0.036Hammer LED Core, RG 2.650, diff 0.015Storm Inverted Fe2 Core, RG 2.570, diff 0.046Storm Capacitor Core, RG 2.570, diff 0.022Ebonite Enhanced V2 Core (pictured: Ebonite Game Breaker 5 GB5 Bowling Ball)1Ebonite Turbo Core (pictured: Ebonite Turbo X Bowling Ball)2Ebonite Centrex Symmetrical Mass Bias Core (pictured: Ebonite The One Ovation Bowling Ball)3Ebonite Iron Fist V2 Core (pictured: Ebonite Spartan Pearl Bowling Ball)4Ebonite Big Time Core (pictured: Ebonite Go Time Bowling Ball)5Ebonite Entity Core (pictured: Ebonite Entity Pearl Bowling Ball)62.442.482.522.562.602.642.680.0100.0200.0300.0400.0500.060RG at 15 lbDifferential at 15 lb← Revs up soonerRevs up later →More flare ↑Less flare ↓
DV8 Larceny Core, RG 2.471, diff 0.028DV8 Renegade Core, RG 2.499, diff 0.040Track I-Core Gen4, RG 2.480, diff 0.053Brunswick Vintage Light Bulb Low RG Core, RG 2.568, diff 0.032Brunswick Dual Centric Core, RG 2.509, diff 0.047Hammer Stacked LED Core, RG 2.545, diff 0.047Hammer Vindicator Core, RG 2.474, diff 0.053Radical Vexed Variant Asymmetric Core, RG 2.490, diff 0.045Radical Modified Intel Symmetric Core, RG 2.483, diff 0.032Motiv Affliction V2 Core, RG 2.480, diff 0.055Storm Element Tour A.I. Core, RG 2.470, diff 0.035900 Global Conduit A.I. Core, RG 2.590, diff 0.050Roto Grip GEM A.I. Core, RG 2.490, diff 0.057Hammer Obsession Tour Core, RG 2.469, diff 0.034Hammer Super Offset Core, RG 2.524, diff 0.053Hammer Gas Mask Core, RG 2.500, diff 0.058Motiv Excel Core, RG 2.550, diff 0.030Motiv Detonator Core, RG 2.470, diff 0.055Storm Solarion A.I. Core, RG 2.480, diff 0.054SWAG Insanity Symmetric Core, RG 2.520, diff 0.034SWAG Fusion Core, RG 2.540, diff 0.036SWAG Watcher Symmetric Core, RG 2.510, diff 0.048SWAG Dragon Asymmetric Core, RG 2.490, diff 0.050SWAG Executioner Asymmetric Core, RG 2.500, diff 0.051Motiv Predator V2 Core, RG 2.470, diff 0.054Storm C3 Centripetal Control Core, RG 2.490, diff 0.029Roto Grip Rondure MaxD Core, RG 2.500, diff 0.058Hammer Vibe Core, RG 2.510, diff 0.042Hammer Aftermath Core, RG 2.520, diff 0.052Brunswick Alert Core, RG 2.478, diff 0.037Brunswick Rampart Core, RG 2.502, diff 0.051DV8 Collision Core, RG 2.462, diff 0.052Track MC2 Asym Core, RG 2.473, diff 0.046Radical Evil Eye Symmetric Core, RG 2.495, diff 0.046Radical No Doubt Symmetric Core, RG 2.485, diff 0.051Storm Surge Core, RG 2.580, diff 0.024Roto Grip Hyped UP Core, RG 2.500, diff 0.042Roto Grip Morph-Wing Core, RG 2.510, diff 0.051Brunswick Fury Core, RG 2.524, diff 0.038Motiv Sigma Core, RG 2.470, diff 0.047Roto Grip Hustle Core, RG 2.530, diff 0.030900 Global Blast A.I. Core, RG 2.470, diff 0.055900 Global Strobe A.I. Core, RG 2.510, diff 0.052Radical Guru Core, RG 2.503, diff 0.044Track I-CORE 3.0, RG 2.486, diff 0.056DV8 Unholy Core, RG 2.504, diff 0.051Brunswick Infinity Core, RG 2.521, diff 0.051Storm Catalyst A.I. Core, RG 2.480, diff 0.053Hammer Gauntlet Core, RG 2.501, diff 0.050Hammer Raw Hammer Core, RG 2.537, diff 0.038Storm Atmos A.I. Core, RG 2.530, diff 0.042Storm Booster Core, RG 2.540, diff 0.046Track Shuttle Core, RG 2.480, diff 0.040Brunswick Light Bulb Core, RG 2.524, diff 0.030Radical Sneak Attack Core, RG 2.544, diff 0.036Motiv Gear Core, RG 2.480, diff 0.034Hammer Huntsman Core, RG 2.470, diff 0.050Hammer Super LED Core, RG 2.632, diff 0.034DV8 Dualistic Core, RG 2.496, diff 0.045Radical Vexed Asymmetric Core, RG 2.498, diff 0.036Motiv Quadfire Core, RG 2.550, diff 0.043Track Stealth Core, RG 2.482, diff 0.056Brunswick Tiered Hexagon Core, RG 2.540, diff 0.045Columbia 300 Piranha Core, RG 2.554, diff 0.043Storm Torsion A.I. Core, RG 2.470, diff 0.050Storm Element Max A.I. Core, RG 2.470, diff 0.055Storm Radius Core, RG 2.610, diff 0.020Roto Grip Rondure Tour X Core, RG 2.480, diff 0.034SWAG Unreal Core, RG 2.510, diff 0.047SWAG Craze Core, RG 2.520, diff 0.030SWAG Serpent Asymmetric Core, RG 2.510, diff 0.048Radical Torpedo Asymmetric Core, RG 2.480, diff 0.052Motiv Overload Core, RG 2.480, diff 0.050DV8 Duality Core, RG 2.480, diff 0.036Hammer Spheroid Core, RG 2.480, diff 0.048Radical Outer Limits Asymmetric Core, RG 2.499, diff 0.051Motiv Apex Predator Core, RG 2.520, diff 0.055Brunswick Danger Zone Core, RG 2.501, diff 0.048Storm RAD-TQ Core, RG 2.560, diff 0.051Storm Velocity Core, RG 2.480, diff 0.051Hammer Modified LED Core, RG 2.586, diff 0.027Epic Spark Core, RG 2.540, diff 0.049Motiv Hadron Dual Density Core, RG 2.500, diff 0.045Track Criterion ID Core, RG 2.496, diff 0.047Brunswick Zone Asymmetric Core, RG 2.478, diff 0.048Roto Grip Rocker A.I. Core, RG 2.480, diff 0.050Motiv Flux Core, RG 2.570, diff 0.015DV8 Mantra Core, RG 2.498, diff 0.047Hammer Gas Mask Low Diff Core, RG 2.500, diff 0.034Roto Grip RST A.I. Core, RG 2.520, diff 0.055Motiv Impulse V2 Core, RG 2.550, diff 0.050SWAG APX V1 Core, RG 2.500, diff 0.042SWAG Judge Core, RG 2.490, diff 0.052900 Global Magna A.I. Core, RG 2.490, diff 0.044Columbia 300 Pulse PowerCOR Core, RG 2.468, diff 0.045KR Strikeforce Launch Core, RG 2.530, diff 0.047900 Global Ellipse Asymmetric A.I. Core, RG 2.480, diff 0.050Motiv Halogen Core, RG 2.550, diff 0.037Storm C3 A.I. Core, RG 2.480, diff 0.031Motiv Gear APG Core, RG 2.470, diff 0.036Radical Snapshot Symmetric Core, RG 2.523, diff 0.050Hammer High Rev Offset Core, RG 2.489, diff 0.053Hammer Huntsman Tour Core, RG 2.472, diff 0.036Hammer LED Core, RG 2.650, diff 0.015Storm Inverted Fe2 Core, RG 2.570, diff 0.046Storm Capacitor Core, RG 2.570, diff 0.022Ebonite Enhanced V2 Core (pictured: Ebonite Game Breaker 5 GB5 Bowling Ball)1Ebonite Turbo Core (pictured: Ebonite Turbo X Bowling Ball)2Ebonite Centrex Symmetrical Mass Bias Core (pictured: Ebonite The One Ovation Bowling Ball)3Ebonite Iron Fist V2 Core (pictured: Ebonite Spartan Pearl Bowling Ball)4Ebonite Big Time Core (pictured: Ebonite Go Time Bowling Ball)5Ebonite Entity Core (pictured: Ebonite Entity Pearl Bowling Ball)62.462.512.562.610.0140.0220.0300.0380.0460.054RG at 15 lbDifferential at 15 lb← Revs up soonerRevs up later →More flare ↑Less flare ↓
Numbered: the Ebonite cores in stock, pictured by a ball that uses each. Grey dots: every other core in a reactive or urethane ball we stock. Up and right means more flare and later rev-up.

Map key: Ebonite cores in stock

  1. 1Ebonite Game Breaker 5 GB5 Bowling BallEbonite Enhanced V2 CoreSymmetricRG 2.480Diff 0.048
  2. 2Ebonite Turbo X Bowling BallEbonite Turbo CoreSymmetricRG 2.517Diff 0.040
  3. 3Ebonite The One Ovation Bowling BallEbonite Centrex Symmetrical Mass Bias CoreAsymmetricRG 2.466Diff 0.056
  4. 4Ebonite Spartan Pearl Bowling BallEbonite Iron Fist V2 CoreAsymmetricRG 2.473Diff 0.053
  5. 5Ebonite Go Time Bowling BallEbonite Big Time CoreSymmetricRG 2.508Diff 0.054
  6. 6Ebonite Entity Pearl Bowling BallEbonite Entity CoreAsymmetricRG 2.515Diff 0.052

Ebonite cores in stock

The 6 cores in Ebonite balls you can buy today, most balls in stock first.

  1. Ebonite Game Breaker 5 GB5 Bowling BallEbonite Enhanced V2 CoreSymmetricRG 2.480Diff 0.0483 in stockNewest: Ebonite Game Breaker 5 Hybrid
  2. Ebonite Turbo X Bowling BallEbonite Turbo CoreSymmetricRG 2.517Diff 0.0403 in stockNewest: Ebonite Turbo X Pearl
  3. Ebonite The One Ovation Bowling BallEbonite Centrex Symmetrical Mass Bias CoreAsymmetricRG 2.466Diff 0.056Mass bias 0.0272 in stockNewest: Ebonite The Great One
  4. Ebonite Spartan Pearl Bowling BallEbonite Iron Fist V2 CoreAsymmetricRG 2.473Diff 0.053Mass bias 0.0192 in stockNewest: Ebonite Spartan Pearl
  5. Ebonite Go Time Bowling BallEbonite Big Time CoreSymmetricRG 2.508Diff 0.0541 in stockNewest: Ebonite Go Time
  6. Ebonite Entity Pearl Bowling BallEbonite Entity CoreAsymmetricRG 2.515Diff 0.052Mass bias 0.0201 in stockNewest: Ebonite Entity Pearl

Specs are the manufacturer’s 15 lb figures. Click a core for its specs by weight, the balls built on it and the nearest cores from other brands.

Ebonite cores out of stock

27 Ebonite cores with no ball in stock right now, newest first.

  1. Ebonite Crusher CoreAsymmetricRG 2.480Diff 0.056Used in: Ebonite Crusher Hybrid, Ebonite Crusher
  2. Ebonite Fireball CoreSymmetricRG 2.510Diff 0.039Used in: Ebonite Fireball Purple Gold, Ebonite Fireball
  3. Ebonite Emerge CoreAsymmetricRG 2.510Diff 0.053Used in: Ebonite Emerge Hybrid, Ebonite Emerge
  4. Ebonite Envision CoreAsymmetricRG 2.500Diff 0.053Used in: Ebonite Envision Pearl, Ebonite Envision
  5. Ebonite Polaris Asymmetric CoreAsymmetricRG 2.470Diff 0.048Used in: Ebonite Polaris, Ebonite Polaris Hybrid
  6. Ebonite V2 Asymmetrical CoreAsymmetricRG 2.480Diff 0.054Used in: Ebonite Game Breaker Asym
  7. Ebonite Puma CoreSymmetricRG 2.520Diff 0.036Used in: Ebonite Puma
  8. Ebonite Aero CoreAsymmetricRG 2.500Diff 0.050Used in: Ebonite Aero, Ebonite Aero Dynamix
  9. Ebonite Stinger CoreSymmetricRG 2.517Diff 0.035Used in: Ebonite Stinger Hybrid, Ebonite Stinger Pearl
  10. Ebonite Light Bulb CoreSymmetricRG 2.530Diff 0.050Used in: Ebonite Show Time Sanded
  11. Ebonite Allure CoreSymmetricRG 2.470Diff 0.049Used in: Ebonite Allure, Ebonite Allure Solid
  12. Ebonite Omni CoreAsymmetricRG 2.500Diff 0.050Used in: Ebonite Omni, Ebonite Omni Hybrid
  13. Ebonite Modified V2 CoreSymmetricRG 2.460Diff 0.051Used in: Ebonite Vortex V2
  14. Ebonite Futura HD CoreSymmetricRG 2.480Diff 0.053Used in: Ebonite Futura
  15. Ebonite Turbo/R CoreSymmetricRG 2.590Diff 0.035Used in: Ebonite Turbo/R Purple Black, Ebonite Turbo/R Black Copper Yellow, Ebonite Turbo/R Pink Black White
  16. Ebonite MOD-1 CoreAsymmetricRG 2.490Diff 0.054Used in: Ebonite Choice, Ebonite Choice Pearl, Ebonite Choice Solid
  17. Ebonite Affinity CoreSymmetricRG 2.520Diff 0.040Used in: Ebonite Affinity
  18. Ebonite Justice CoreAsymmetricRG 2.480Diff 0.055Used in: Ebonite Verdict, Ebonite Verdict Pearl
  19. Ebonite Matrix Reloaded CoreSymmetricRG 2.530Diff 0.049Used in: Ebonite Matrix, Ebonite Matrix Solid
  20. Ebonite Maverick CoreAsymmetricRG 2.480Diff 0.056Used in: Ebonite Maverick
  21. Ebonite Iron Fist CoreAsymmetricRG 2.470Diff 0.057Used in: Ebonite Warrior, Ebonite Warrior Elite, Ebonite Warrior Supreme
  22. Ebonite Mission CoreAsymmetricRG 2.490Diff 0.050Used in: Ebonite Energy Source, Ebonite Mission Unknown, Ebonite Source Overseas
  23. Ebonite Cyclone Torq CoreSymmetricRG 2.530Diff 0.053Used in: Ebonite Cyclone Orange Purple Red, Ebonite Cyclone Black Red Yellow, Ebonite Cyclone Blue Red Sparkle
  24. Ebonite CB-2 Asymmetric CoreAsymmetricRG 2.480Diff 0.049Used in: Ebonite Pivot Point, Ebonite Honor, Ebonite Code of Honor
  25. Ebonite AXS CoreAsymmetricRG 2.510Diff 0.057Used in: Ebonite Challenge
  26. Ebonite Spike Symmetric MB CoreAsymmetricRG 2.500Diff 0.051Used in: Ebonite Total NV
  27. Ebonite Spike Symmetrical MBNo current ball in our catalog

Out of stock means no ball with this core is in stock at BowlersMart today. Some come back when the ball restocks; others the brand has retired. The core pages stay up because bowlers still search for these balls, and each one points to the closest cores in stock.

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Best-selling Ebonite balls right now

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Ranked by what BowlersMart customers bought in the last 30 days. Prices and stock are updated nightly.

Ebonite The Great One Bowling BallEbonite The Great One Bowling Ball1$159.95$249.95Ebonite Game Breaker 5 GB5 Bowling BallEbonite Game Breaker 5 GB5 Bowling Ball38$119.95$229.95Ebonite Turbo X Pearl Bowling BallEbonite Turbo X Pearl Bowling Ball$149.95$229.95Ebonite Game Breaker 5 Pearl Bowling BallEbonite Game Breaker 5 Pearl Bowling Ball31$119.95$229.95CloseoutEbonite The One Ovation Bowling BallEbonite The One Ovation Bowling Ball12$119.95$139.95MSRP $249.99Ebonite Spartan Bowling BallEbonite Spartan Bowling Ball3$164.95$279.99Ebonite Turbo X Bowling BallEbonite Turbo X Bowling Ball33$129.95$229.95Ebonite Spartan Pearl Bowling BallEbonite Spartan Pearl Bowling Ball3$189.95$279.99CloseoutEbonite Entity Pearl Bowling BallEbonite Entity Pearl Bowling Ball2$129.95$159.95MSRP $279.99Ebonite Go Time Bowling BallEbonite Go Time Bowling Ball$149.95$229.95

Questions bowlers ask

What cores does Ebonite use in its bowling balls?

6 different cores are in the Ebonite balls we stock today: Enhanced V2 Core, Turbo Core, Centrex Symmetrical Mass Bias Core, Iron Fist V2 Core, Big Time Core, Entity Core. 3 are symmetric and 3 asymmetric. Each core’s page lists its RG, differential and mass bias by weight.

Which Ebonite core has the most flare?

The Ebonite Centrex Symmetrical Mass Bias Core, with a differential of 0.056 at 15 lb, the highest of the Ebonite cores in stock. Higher differential means more flare potential and a stronger, more angular motion.

Which Ebonite core revs up earliest?

The Ebonite Centrex Symmetrical Mass Bias Core, with an RG of 2.466 at 15 lb, the lowest of the Ebonite cores in stock. A low RG core starts revving sooner and reads the midlane earlier.

Are Ebonite cores symmetric or asymmetric?

Both. Of the 6 Ebonite cores in stock, 3 are symmetric (one pin marker, a smooth continuous arc) and 3 are asymmetric (pin and PSA markers, a stronger and more angular backend).

What is Ebonite’s newest core?

The Ebonite Iron Fist V2 Core, first sold here in January 2026. It is asymmetric with an RG of 2.473 and a differential of 0.053 at 15 lb.

Next lesson

Ebonite coverstocksEvery Ebonite cover compound and the balls that use it.Bowling ball coresRG, differential and mass bias explained, and every brand’s library.Bowling balls by RGAll in-stock balls sorted by RG.

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