Bowling ball core · Brunswick

Brunswick Quantum Mushroom High RG Asymmetric Core

The core inside the Brunswick Quantum Bias line

An asymmetric core with later rev-up, more length and high flare, built for medium to heavy oil. Balls with this core are no longer available at BowlersMart.

  • Asymmetric
  • RG 2.563
  • Diff 0.052
  • MB 0.013

Specs

RG AT 15 LB

2.563

Later rev-up, more length

Revs soonerRevs later

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

DIFFERENTIAL AT 15 LB

0.052

High flare

Less flareMore flare

75% of the reactive and urethane balls we stock have a lower differential.

MASS BIAS AT 15 LB

0.013

Mild asymmetry

MilderStronger

14% 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.
Brunswick Quantum Mushroom High RG Asymmetric Core specs by ball weight
Weight RG DifferentialDiff Mass biasMB
16 lb 2.522 0.052 0.013
15 lbUsed on this page 2.563 0.052 0.013
14 lb 2.642 0.044 0.010

Source: Brunswick published specs, as shown on BowlersMart’s original Brunswick Quantum Mushroom High RG Asymmetric 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.

2 balls on this core list different numbers
  • Brunswick Quantum Bias Urethane Purple Bowling Ball: RG 2.580, diff 0.048, mass bias 0.013 at 15 lb
  • Brunswick Quantum Bias Urethane Blue Bowling Ball: RG 2.580, diff 0.049, mass bias 0.012 at 15 lb

Looking for a ball like your Quantum Bias?

Balls with the Brunswick Quantum Mushroom High RG Asymmetric Core are no longer available at BowlersMart. These in-stock balls have the closest RG and differential.

Storm Next Factor Bowling Ball

Storm Next Factor

Storm R3S Pearl Reactive

Medium oil

Sale price $119.95 Regular price $289.95In stock
Motiv Primal Ghost Bowling Ball

Motiv Primal Ghost

Motiv Coercion HFS (High Friction Solid) Reactive

Medium oil

Sale price $169.95 Regular price $259.95In stock
Storm Hy-Road Bowling Ball

Storm Hy-Road

Storm R2S Hybrid Reactive

Medium oil

Sale price $139.95 Regular price $229.95In stock
Hammer Blacklist Bowling Ball

Hammer Blacklist

Hammer HK22 Cohesion Pearl Reactive

Medium oil

Sale price $169.95 Regular price $269.95In stock
Epic Ignite Solid Red White Black Bowling Ball

Epic Ignite Solid Red White Black

Epic Fire Solid Reactive

Dry to medium oil

Sale price $79.95 Regular price $129.95In stock
900 Global Portal Bowling Ball

900 Global Portal

900 Global RB 92 Solid Reactive

Heavy oil, medium to heavy oil

Sale price $209.95 Regular price $299.95In stock

Balls with the Brunswick Quantum Mushroom High RG Asymmetric Core

None of the 4 balls with the Brunswick Quantum Mushroom High RG Asymmetric Core are in stock at BowlersMart right now.

Show 4 balls no longer available at BowlersMart
More bowling balls with the Brunswick Quantum Mushroom High RG Asymmetric Core
Ball Cover First seen
Brunswick Quantum Bias Bowling Ball Brunswick ECA-XR Solid Reactive June 2018
Brunswick Quantum Bias Pearl Bowling Ball Brunswick ECA-XR Pearl Reactive February 2019
Brunswick Quantum Bias Urethane Purple Bowling Ball Brunswick Pearl Urethane May 2022
Brunswick Quantum Bias Urethane Blue Bowling Ball Brunswick Solid Urethane May 2022

Where the Brunswick Quantum Mushroom High RG Asymmetric 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 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 0.055Roto 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 0.040Ebonite Centrex Symmetrical Mass Bias Core, RG 2.466, diff 0.056Motiv 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 0.046Ebonite Iron Fist V2 Core, RG 2.473, diff 0.053Radical 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 0.034Ebonite 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 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 Velocity Core, RG 2.480, diff 0.051Hammer Modified LED Core, RG 2.586, diff 0.027Motiv 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 0.055SWAG 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 Capacitor Core, RG 2.570, diff 0.022Storm RAD-TQ Core (pictured: Storm Next Factor Bowling Ball)1Motiv Impulse V2 Core (pictured: Motiv Primal Ghost Bowling Ball)2Storm Inverted Fe2 Core (pictured: Storm Hy-Road Bowling Ball)3900 Global Conduit A.I. Core (pictured: 900 Global Portal Bowling Ball)4Hammer Stacked LED Core (pictured: Hammer Blacklist Bowling Ball)5Epic Spark Core (pictured: Epic Ignite Solid Red White Black Bowling Ball)6Brunswick Quantum Mushroom High RG Asymmetric Core (pictured: Brunswick Quantum Bias Urethane Purple 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.

Same family: Brunswick Quantum Mushroom High RG Symmetric Core

This core 1 Nearest cores Other cores

Nearest cores to the Brunswick Quantum Mushroom High RG Asymmetric Core
Core Brand Shape RG Diff vs this core
Storm Next Factor Bowling Ball1Storm RAD-TQ CorePictured: Storm Next Factor
 Storm Asymmetric 2.560 0.051 RG −0.003 · Diff −0.001
Motiv Primal Ghost Bowling Ball2Motiv Impulse V2 CorePictured: Motiv Primal Ghost
 Motiv Symmetric 2.550 0.050 RG −0.013 · Diff −0.002
Storm Hy-Road Bowling Ball3Storm Inverted Fe2 CorePictured: Storm Hy-Road
 Storm Symmetric 2.570 0.046 RG +0.007 · Diff −0.006
900 Global Portal Bowling Ball4900 Global Conduit A.I. CorePictured: 900 Global Portal
 900 Global Asymmetric 2.590 0.050 RG +0.027 · Diff −0.002
Hammer Blacklist Bowling Ball5Hammer Stacked LED CorePictured: Hammer Blacklist
 Hammer Symmetric 2.545 0.047 RG −0.018 · Diff −0.005
Epic Ignite Solid Red White Black Bowling Ball6Epic Spark CorePictured: Epic Ignite Solid Red White Black
 Epic Symmetric 2.540 0.049 RG −0.023 · Diff −0.003

Matches use 15 lb RG and differential.

Drilling and tools

Brunswick drill sheetsLayout 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 Brunswick Quantum Mushroom High RG Asymmetric CoreNone of the 4 balls with the Brunswick Quantum Mushroom High RG Asymmetric Core are in stock at BowlersMart right now.Show 4 balls no longer available at BowlersMartMore bowling balls with the Brunswick Quantum Mushroom High RG Asymmetric CoreBallCoverFirst seenBrunswick Quantum Bias Bowling BallBrunswick ECA-XR Solid ReactiveJune 2018Brunswick Quantum Bias Pearl Bowling BallBrunswick ECA-XR Pearl ReactiveFebruary 2019Brunswick Quantum Bias Urethane Purple Bowling BallBrunswick Pearl UrethaneMay 2022Brunswick Quantum Bias Urethane Blue Bowling BallBrunswick Solid UrethaneMay 2022Where the Brunswick Quantum Mushroom High RG Asymmetric sitsEach dot is a core in balls we stock. Cores close together roll alike; the cover and layout decide the rest.All coresSymmetricAsymmetricBrunswick onlyAny brand900 GlobalBrunswickColumbia 300DV8EboniteEpicHammerKR StrikeforceMotivRadicalRoto GripSWAGStormTrack+−ResetZoom to this coreStorm 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 Vindicator Core, RG 2.474, diff 0.053Radical Vexed Variant Asymmetric Core, RG 2.490, diff 0.045Radical Modified Intel Symmetric Core,

From Brunswick’s description

Questions bowlers ask

What is the RG of the Brunswick Quantum Mushroom High RG Asymmetric Core?

At 15 lb the Brunswick Quantum Mushroom High RG Asymmetric Core has an RG of 2.563. It ranges from 2.522 to 2.642 across the listed weights.

What is the 14 lb RG of the Brunswick Quantum Mushroom High RG Asymmetric Core?

At 14 lb the RG is 2.642.

What is the differential of the Brunswick Quantum Mushroom High RG Asymmetric Core?

At 15 lb the differential is 0.052. The mass bias is 0.013.

Which bowling balls use the Brunswick Quantum Mushroom High RG Asymmetric Core?

Brunswick Quantum Bias Bowling Ball, Brunswick Quantum Bias Pearl Bowling Ball, Brunswick Quantum Bias Urethane Purple Bowling Ball, Brunswick Quantum Bias Urethane Blue Bowling Ball. 0 are in stock now.

Can I still buy a ball with the Brunswick Quantum Mushroom High RG Asymmetric Core?

Balls with this core are currently unavailable at BowlersMart. Closest in-stock alternatives by RG and differential include Storm Next Factor Bowling Ball, Motiv Primal Ghost Bowling Ball, Storm Hy-Road Bowling Ball, Hammer Blacklist Bowling Ball, Epic Ignite Solid Red White Black Bowling Ball, 900 Global Portal Bowling Ball.

How do the Brunswick Quantum Mushroom High RG Asymmetric Core specs change by weight?

At 16 lb: RG 2.522, differential 0.052, mass bias 0.013. The 12 lb values are not listed.

How does the Brunswick Quantum Mushroom High RG Asymmetric 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. Brunswick published specs, as shown on BowlersMart’s original Brunswick Quantum Mushroom High RG Asymmetric 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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