Bowling ball core · Ebonite

Ebonite Centrex Symmetrical Mass Bias Core

The core inside the Ebonite The One line

An asymmetric core with early rev-up and very high flare, built for medium to heavy oil. 2 of the 12 balls with this core are in stock at BowlersMart.

  • Asymmetric
  • RG 2.466
  • Diff 0.056
  • MB 0.027
Ebonite Centrex Symmetrical Mass Bias asymmetric core shape inside the ball

Specs

RG AT 15 LB

2.466

Early rev-up

Revs soonerRevs later

1% of the reactive and urethane balls we stock have a lower RG.

DIFFERENTIAL AT 15 LB

0.056

Very high flare

Less flareMore flare

92% of the reactive and urethane balls we stock have a lower differential.

MASS BIAS AT 15 LB

0.027

Strong asymmetry

MilderStronger

96% of the asymmetric reactive and urethane balls we stock have a lower mass bias.

RG How soon the ball revs up.Differential How much the ball can flare.Mass bias How asymmetric the core is.
Ebonite Centrex Symmetrical Mass Bias Core specs by ball weight
Weight RG DifferentialDiff Mass biasMB
16 lb 2.474 0.049 0.021
15 lbUsed on this page 2.466 0.056 0.027
14 lb 2.493 0.053 0.025
13 lb 2.597 0.041 0.014
12 lb 2.593 0.041 0.014

Source: Ebonite published specs, as shown on BowlersMart’s original Ebonite Centrex Symmetrical Mass Bias core page (2022). RG and differential change with ball weight; use the row for the weight you throw. The highlighted 15 lb row is the one used on this page.

Balls with the Ebonite Centrex Symmetrical Mass Bias Core

2 of the 12 balls with the Ebonite Centrex Symmetrical Mass Bias Core are in stock at BowlersMart. Same core, different covers: pick the cover for the lanes you bowl on.

Solid covers

Solid covers grip the lane soonest and suit heavier oil.

Ebonite The Great One Bowling Ball

Ebonite The Great One

Ebonite HK22C2 GB 15.1 Solid Reactive

Medium to heavy oil

Sale price $159.95 Regular price $249.95In stock

Hybrid covers

Hybrid covers mix solid grip with pearl length.

Ebonite The One Ovation Bowling Ball

Ebonite The One Ovation

Ebonite HK22C GB15.1 Hybrid Reactive

Medium to heavy oil

Sale price $119.95 Regular price $249.99In stock
Show 10 balls no longer available at BowlersMart
More bowling balls with the Ebonite Centrex Symmetrical Mass Bias Core
Ball Cover First seen
Ebonite The One Reverb Bowling Ball Ebonite HK22C GB 15.1 Pearl Reactive September 2024
Ebonite The One Expansion Limited Overseas Bowling Ball Ebonite XL1350 Reactive December 2013
Ebonite Dominate Angular One Overseas Bowling Ball Hybrid Reactive November 2016
Ebonite The One Premium Overseas Bowling Ball Ebonite Big Time Hybrid Reactive November 2016
Ebonite Real One Bowling Ball Ebonite GB 13.3 Hybrid Reactive September 2017
Ebonite Golden One Bowling Ball Ebonite GB 13.3 Hybrid Reactive March 2020
Ebonite The One Dominate Overseas Bowling Ball Ebonite RCM Pearl Reactive April 2020
Ebonite The One Remix Bowling Ball Ebonite GB 14.4 Solid Reactive March 2023
Ebonite The One Encore Bowling Ball Ebonite GB 14.4 Hybrid Reactive August 2023
Ebonite The One Ultramarine Overseas Bowling Ball Ebonite GB 10.7 Hybrid Reactive April 2023

Shop the 2 available balls with this core

Where the Ebonite Centrex Symmetrical Mass Bias sits

Each dot is a core in balls we stock. Cores close together roll alike; the cover and layout decide the rest.

Storm Element Tour A.I. Core, RG 2.470, diff 0.035DV8 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 0.047Ebonite Big Time Core, RG 2.508, diff 0.054Hammer Stacked LED Core, RG 2.545, diff 0.047Radical 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 0.055900 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 0.058Ebonite Turbo Core, RG 2.517, diff 0.040Motiv Excel Core, RG 2.550, diff 0.030Storm 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 0.051Storm 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 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 0.034Ebonite Enhanced V2 Core, RG 2.480, diff 0.048DV8 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 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 0.048Ebonite Entity Core, RG 2.515, diff 0.052Roto 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 0.022Storm Element Max A.I. Core (pictured: Storm Ion Max Bowling Ball )1900 Global Blast A.I. Core (pictured: 900 Global Vengeance Bowling Ball)2Motiv Detonator Core (pictured: Motiv Steel Forge Bowling Ball)3Motiv Predator V2 Core (pictured: Motiv Jackal Onyx Bowling Ball)4Ebonite Iron Fist V2 Core (pictured: Ebonite Spartan Pearl Bowling Ball)5Hammer Vindicator Core (pictured: Hammer Reckoning Bowling Ball)6Ebonite Centrex Symmetrical Mass Bias Core (pictured: Ebonite The One Ovation Bowling Ball)EARLY REV-UPMID-LANELATER REV-UPHIGH FLAREMEDIUMLOW FLARE2.442.482.522.562.602.642.680.0100.0200.0300.0400.0500.060RG at 15 lbDifferential at 15 lb← Revs up soonerRevs up later →More flare ↑Less flare ↓

Nearest cores, zoomed in

Hover or tap a dot for that core’s numbers. Click a dot to open its page. Drag to move around when zoomed in. The same RG and differential do not guarantee the same ball motion.

This core 1 Nearest cores Other cores

Nearest cores to the Ebonite Centrex Symmetrical Mass Bias Core
Core Brand Shape RG Diff vs this core
Storm Ion Max Bowling Ball 1Storm Element Max A.I. CorePictured: Storm Ion Max Bowling Ball 
 Storm Asymmetric 2.470 0.055 RG +0.004 · Diff −0.001
900 Global Vengeance Bowling Ball2900 Global Blast A.I. CorePictured: 900 Global Vengeance
 900 Global Symmetric 2.470 0.055 RG +0.004 · Diff −0.001
Motiv Steel Forge Bowling Ball3Motiv Detonator CorePictured: Motiv Steel Forge
 Motiv Symmetric 2.470 0.055 RG +0.004 · Diff −0.001
Motiv Jackal Onyx Bowling Ball4Motiv Predator V2 CorePictured: Motiv Jackal Onyx
 Motiv Asymmetric 2.470 0.054 RG +0.004 · Diff −0.002
Ebonite Spartan Pearl Bowling Ball5Ebonite Iron Fist V2 CorePictured: Ebonite Spartan Pearl
 Ebonite Asymmetric 2.473 0.053 RG +0.007 · Diff −0.003
Hammer Reckoning Bowling Ball6Hammer Vindicator CorePictured: Hammer Reckoning
 Hammer Asymmetric 2.474 0.053 RG +0.008 · Diff −0.003

Matches use 15 lb RG and differential.

Drilling and tools

Drilling layoutsLayout guides for symmetric and asymmetric ballsDual angle converterTurn a pin to PAP layout into a dual angle layout

Turn on JavaScript to compare with your ball.Balls with the Ebonite Centrex Symmetrical Mass Bias Core2 of the 12 balls with the Ebonite Centrex Symmetrical Mass Bias Core are in stock at BowlersMart. Same core, different covers: pick the cover for the lanes you bowl on.Solid coversSolid covers grip the lane soonest and suit heavier oil.

From Ebonite’s description

Questions bowlers ask

What is the RG of the Ebonite Centrex Symmetrical Mass Bias Core?

At 15 lb the Ebonite Centrex Symmetrical Mass Bias Core has an RG of 2.466. It ranges from 2.466 to 2.597 across the listed weights.

What is the 14 lb RG of the Ebonite Centrex Symmetrical Mass Bias Core?

At 14 lb the RG is 2.493.

What is the differential of the Ebonite Centrex Symmetrical Mass Bias Core?

At 15 lb the differential is 0.056. The mass bias is 0.027.

Which bowling balls use the Ebonite Centrex Symmetrical Mass Bias Core?

Ebonite The Great One Bowling Ball, Ebonite The One Ovation Bowling Ball, Ebonite The One Reverb Bowling Ball, Ebonite The One Expansion Limited Overseas Bowling Ball, Ebonite Dominate Angular One Overseas Bowling Ball. 2 are in stock now.

How do the Ebonite Centrex Symmetrical Mass Bias Core specs change by weight?

At 16 lb: RG 2.474, differential 0.049, mass bias 0.021. At 12 lb: RG 2.593, differential 0.041, mass bias 0.014.

How does the Ebonite Centrex Symmetrical Mass Bias Core compare with my ball?

Type the ball you throw into the Compare with your ball box on this page. It shows the RG and differential side by side and saves your bag for every core page.

Sources and method

Specs. Ebonite published specs, as shown on BowlersMart’s original Ebonite Centrex Symmetrical Mass Bias core page (2022), as published by the manufacturer.

Baseline. The baseline is 212 in-stock, published reactive and urethane balls. Plastic and polyester covers, 2-piece, 3-piece and pancake cores, missing covers and missing RG or differential values are excluded.

Percentiles. Percentiles are the share of baseline balls with a strictly lower or higher value; ties are not counted.

Nearest cores. Nearest cores are ranked by distance on standardized 15 lb RG and differential, with the same symmetric or asymmetric shape preferred among near ties (distance bands of 0.1).

Mass bias. Mass bias is compared among asymmetric balls with numeric mass bias only.

Updated. Catalog and page updated 2026-10-16.

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