Bowling ball core · Hammer

Hammer Stacked LED Core

Symmetric Hammer core

A symmetric core with later rev-up, more length and medium flare, built for medium oil. 1 of the 1 balls with this core are in stock at BowlersMart.

  • Symmetric
  • RG 2.545
  • Diff 0.047
Hammer Stacked LED symmetric core shape inside the ball

Specs

RG AT 15 LB

2.545

Later rev-up, more length

Revs soonerRevs later

87% of the reactive and urethane balls we stock have a lower RG.

DIFFERENTIAL AT 15 LB

0.047

Medium flare

Less flareMore flare

49% 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.
Hammer Stacked LED Core specs by ball weight (reference ball: Hammer Blacklist)
Weight RG DifferentialDiff Mass biasMB
16 lb 2.554 0.040 None
15 lbUsed on this page 2.545 0.047 None
14 lb 2.561 0.047 None
13 lb 2.585 0.040 None
12 lb 2.608 0.040 None

Source: Hammer published specs, as listed on the Hammer Blacklist product page. 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 Hammer Stacked LED Core

1 of the 1 balls with the Hammer Stacked LED Core are in stock at BowlersMart. Same core, different covers: pick the cover for the lanes you bowl on.

Hammer Blacklist Bowling Ball

Hammer Blacklist

Hammer HK22 Cohesion Pearl Reactive

Medium oil

Sale price $169.95 Regular price $269.95In stock

Shop the 1 available balls with this core

Where the Hammer Stacked LED 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 0.055900 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 0.040Ebonite 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 0.042Track 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 0.036Track Stealth Core, RG 2.482, diff 0.056Columbia 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 0.027Motiv 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 0.045900 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 Booster Core (pictured: Storm Rocket AI Bowling Ball)1Brunswick Tiered Hexagon Core (pictured: Brunswick Crown Victory Bowling Ball)2Epic Spark Core (pictured: Epic Ignite Solid Red White Black Bowling Ball)3Motiv Impulse V2 Core (pictured: Motiv Primal Ghost Bowling Ball)4Motiv Quadfire Core (pictured: Motiv Supra Clutch Bowling Ball)5KR Strikeforce Launch Core (pictured: KR Strikeforce Rise Red Black Pearl Bowling Ball)6Hammer Stacked LED Core (pictured: Hammer Blacklist 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 Hammer Stacked LED Core
Core Brand Shape RG Diff vs this core
Storm Rocket AI Bowling Ball1Storm Booster CorePictured: Storm Rocket AI
 Storm Symmetric 2.540 0.046 RG −0.005 · Diff −0.001
Brunswick Crown Victory Bowling Ball2Brunswick Tiered Hexagon CorePictured: Brunswick Crown Victory
 Brunswick Symmetric 2.540 0.045 RG −0.005 · Diff −0.002
Epic Ignite Solid Red White Black Bowling Ball3Epic Spark CorePictured: Epic Ignite Solid Red White Black
 Epic Symmetric 2.540 0.049 RG −0.005 · Diff +0.002
Motiv Primal Ghost Bowling Ball4Motiv Impulse V2 CorePictured: Motiv Primal Ghost
 Motiv Symmetric 2.550 0.050 RG +0.005 · Diff +0.003
Motiv Supra Clutch Bowling Ball5Motiv Quadfire CorePictured: Motiv Supra Clutch
 Motiv Symmetric 2.550 0.043 RG +0.005 · Diff −0.004
KR Strikeforce Rise Red Black Pearl Bowling Ball6KR Strikeforce Launch CorePictured: KR Strikeforce Rise Red Black Pearl
 KR Strikeforce Symmetric 2.530 0.047 RG −0.015 · Diff 0.000

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 Hammer Stacked LED Core1 of the 1 balls with the Hammer Stacked LED Core are in stock at BowlersMart. Same core, different covers: pick the cover for the lanes you bowl on.

From Hammer’s description

Questions bowlers ask

What is the RG of the Hammer Stacked LED Core?

At 15 lb the Hammer Stacked LED Core has an RG of 2.545. It ranges from 2.545 to 2.608 across the listed weights.

What is the 14 lb RG of the Hammer Stacked LED Core?

At 14 lb the RG is 2.561.

What is the differential of the Hammer Stacked LED Core?

At 15 lb the differential is 0.047. This is a symmetric core, so mass bias is not applicable.

Which bowling balls use the Hammer Stacked LED Core?

Hammer Blacklist Bowling Ball. 1 are in stock now.

How do the Hammer Stacked LED Core specs change by weight?

At 16 lb: RG 2.554, differential 0.040. At 12 lb: RG 2.608, differential 0.040.

How does the Hammer Stacked LED 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. Hammer published specs, as listed on the Hammer Blacklist product page, 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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