Bowling ball core · Brunswick

Brunswick Cynosure Core

Symmetric Brunswick core

A symmetric core with early rev-up and low flare, built for medium to heavy oil. Balls with this core are no longer available at BowlersMart.

  • Symmetric
  • RG 2.471
  • Diff 0.032
Brunswick Cynosure symmetric core shape inside the ball

Specs

RG AT 15 LB

2.471

Early rev-up

Revs soonerRevs later

12% of the reactive and urethane balls we stock have a lower RG.

DIFFERENTIAL AT 15 LB

0.032

Low flare

Less flareMore flare

15% of the reactive and urethane balls we stock have a lower differential.

MASS BIAS AT 15 LB

None

Symmetric core

Symmetric cores have no mass bias marker to place when drilling.

RG How soon the ball revs up.Differential How much the ball can flare.Mass bias How asymmetric the core is.
Brunswick Cynosure Core specs by ball weight
Weight RG DifferentialDiff Mass biasMB
16 lb 2.485 0.030 None
15 lbUsed on this page 2.471 0.032 None
14 lb 2.486 0.032 None
13 lb 2.597 0.041 None
12 lb 2.593 0.041 None

Source: Brunswick published specs, as shown on BowlersMart’s original Brunswick Cynosure 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.

Looking for a ball like your Brunswick Cynosure?

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

Hammer Zero Mercy Tour Bowling Ball

Hammer Zero Mercy Tour

Hammer C2 Tour Edition Solid Reactive

Medium to heavy oil

Sale price $194.95 Regular price $279.95In stock
Storm IQ Tour A.I. Bowling Ball

Storm IQ Tour A.I.

Storm R2S Hybrid Reactive

Medium oil

Sale price $119.95 Regular price $269.95In stock
Storm Ion Pro Pearl Bowling Ball

Storm Ion Pro Pearl

Storm NRG Pearl Reactive

Medium oil

Sale price $209.95 Regular price $289.95In stock
Motiv Venom Hysteria Bowling Ball

Motiv Venom Hysteria

Motiv Propulsion MXV Pearl Reactive

Medium oil

Sale price $184.95 Regular price $229.95In stock
Roto Grip Gremlin Tour X Bowling Ball

Roto Grip Gremlin Tour X

Roto Grip V-R1 Hybrid Reactive

Medium to heavy oil

Sale price $159.95 Regular price $249.95In stock
Radical Intel Recon Hybrid Bowling Ball

Radical Intel Recon Hybrid

Radical HK22 Hybrid Reactive

Medium oil

Sale price $159.95 Regular price $259.95In stock

Balls with the Brunswick Cynosure Core

None of the 1 balls with the Brunswick Cynosure Core are in stock at BowlersMart right now.

Show 1 ball no longer available at BowlersMart
More bowling balls with the Brunswick Cynosure Core
Ball Cover First seen
Brunswick Phantom Bowling Ball Brunswick Savvy Hook 2.0 Solid Reactive December 2019

Where the Brunswick Cynosure sits

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

DV8 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 0.047Hammer Vindicator Core, RG 2.474, diff 0.053Radical Vexed Variant Asymmetric Core, RG 2.490, diff 0.045Motiv 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 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 0.036Hammer 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 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 0.037Motiv 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 C3 A.I. Core (pictured: Storm IQ Tour A.I. Bowling Ball)1Hammer Obsession Tour Core (pictured: Hammer Zero Mercy Tour Bowling Ball)2Storm Element Tour A.I. Core (pictured: Storm Ion Pro Solid Bowling Ball)3Motiv Gear Core (pictured: Motiv Venom Shock Bowling Ball)4Radical Modified Intel Symmetric Core (pictured: Radical Intel Recon Hybrid Bowling Ball)5DV8 Larceny Core (pictured: DV8 Smooth Criminal Bowling Ball)6Brunswick Cynosure Core (pictured: Brunswick Phantom 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 Brunswick Cynosure Core
Core Brand Shape RG Diff vs this core
Storm IQ Tour A.I. Bowling Ball1Storm C3 A.I. CorePictured: Storm IQ Tour A.I.
 Storm Symmetric 2.480 0.031 RG +0.009 · Diff −0.001
Hammer Zero Mercy Tour Bowling Ball2Hammer Obsession Tour CorePictured: Hammer Zero Mercy Tour
 Hammer Asymmetric 2.469 0.034 RG −0.002 · Diff +0.002
Storm Ion Pro Solid Bowling Ball3Storm Element Tour A.I. CorePictured: Storm Ion Pro Solid
 Storm Asymmetric 2.470 0.035 RG −0.001 · Diff +0.003
Motiv Venom Shock Bowling Ball4Motiv Gear CorePictured: Motiv Venom Shock
 Motiv Symmetric 2.480 0.034 RG +0.009 · Diff +0.002
Radical Intel Recon Hybrid Bowling Ball5Radical Modified Intel Symmetric CorePictured: Radical Intel Recon Hybrid
 Radical Symmetric 2.483 0.032 RG +0.012 · Diff 0.000
DV8 Smooth Criminal Bowling Ball6DV8 Larceny CorePictured: DV8 Smooth Criminal
 DV8 Symmetric 2.471 0.028 RG 0.000 · Diff −0.004

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

Brunswick has brought back one of the most reminisced names in bowling The Phantom. The return brings back ball motion of yesterday but on today’s conditions. The Cynosure symmetric core with low RG/low differential will help to provide a smooth, clean motion that every bowler will need in their bag.

From Brunswick’s description

Questions bowlers ask

What is the RG of the Brunswick Cynosure Core?

At 15 lb the Brunswick Cynosure Core has an RG of 2.471. It ranges from 2.471 to 2.597 across the listed weights.

What is the 14 lb RG of the Brunswick Cynosure Core?

At 14 lb the RG is 2.486.

What is the differential of the Brunswick Cynosure Core?

At 15 lb the differential is 0.032. This is a symmetric core, so mass bias is not applicable.

Which bowling balls use the Brunswick Cynosure Core?

Brunswick Phantom Bowling Ball. 0 are in stock now.

Can I still buy a ball with the Brunswick Cynosure Core?

Balls with this core are currently unavailable at BowlersMart. Closest in-stock alternatives by RG and differential include Hammer Zero Mercy Tour Bowling Ball, Storm IQ Tour A.I. Bowling Ball, Storm Ion Pro Pearl Bowling Ball, Motiv Venom Hysteria Bowling Ball, Roto Grip Gremlin Tour X Bowling Ball, Radical Intel Recon Hybrid Bowling Ball.

How do the Brunswick Cynosure Core specs change by weight?

At 16 lb: RG 2.485, differential 0.030. At 12 lb: RG 2.593, differential 0.041.

How does the Brunswick Cynosure 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 Cynosure 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 2026-10-17.

Next lesson

Compare cores by RGEvery in-stock ball from lowest to highest RGCompare cores by differentialEvery in-stock ball from lowest to highest differentialAll bowling ball coresCore libraries for every brand we carryBrunswick core libraryEvery Brunswick core we have specs for