Bowling ball core · Hammer

Hammer Modified LED Core

Symmetric Hammer core

A symmetric core with later rev-up, more length and low flare, built for dry to medium oil, medium oil. 1 of the 3 balls with this core are in stock at BowlersMart.

  • Symmetric
  • RG 2.586
  • Diff 0.027
Hammer LED Resin symmetric core shape inside the ball

Specs

RG AT 15 LB

2.586

Later rev-up, more length

Revs soonerRevs later

98% of the reactive and urethane balls we stock have a lower RG.

DIFFERENTIAL AT 15 LB

0.027

Low flare

Less flareMore flare

6% 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 Modified LED Core specs by ball weight (reference ball: Hammer NU 2.0 Hammer)
Weight RG DifferentialDiff Mass biasMB
16 lb 2.541 0.035 None
15 lbUsed on this page 2.586 0.027 None
14 lb 2.605 0.026 None
13 lb 2.598 0.025 None
12 lb 2.592 0.031 None

Source: Hammer published specs, as listed on the NU 2.0 Hammer 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 Modified LED Core

1 of the 3 balls with the Hammer Modified LED Core are in stock at BowlersMart. Same core, different covers: pick the cover for the lanes you bowl on.

Hammer NU 2.0 Hammer Bowling Ball

Hammer NU 2.0 Hammer

Hammer NU Active

Dry to medium oil, medium oil

Sale price $149.95 Regular price $239.95In stock
Show 2 balls no longer available at BowlersMart
More bowling balls with the Hammer Modified LED Core
Ball Cover First seen
Hammer NU Blue Hammer Bowling Ball Hammer Not Urethane October 2023
Hammer Purple Solid Reactive Bowling Ball Hammer Solid Reactive October 2022

Shop the 1 available balls with this core

Where the Hammer Modified 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 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 0.045Radical 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 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 0.051Roto 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 0.055Roto 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 0.051Epic 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 0.050DV8 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 Surge Core (pictured: Storm Tropical Surge Pink Purple Bowling Ball)1Storm Capacitor Core (pictured: Storm Pitch Black Bowling Ball)2Brunswick Vintage Light Bulb Low RG Core (pictured: Brunswick Purple Rhino Pro Bowling Ball)3Storm Radius Core (pictured: Storm Concept Bowling Ball)4Motiv Excel Core (pictured: Motiv Frenzy Blue Teal Pearl Bowling Ball)5Motiv Flux Core (pictured: Motiv Shadow Tank Bowling Ball)6Hammer Modified LED Core (pictured: Hammer NU 2.0 Hammer 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: Hammer Modified Infamous Core Same family: Hammer Modified Spheroid Core Same family: Hammer Modified Ultima Core Same family: Hammer Modified Arson 2 Core Same family: Hammer Modified Vibe Core

This core 1 Nearest cores Other cores

Nearest cores to the Hammer Modified LED Core
Core Brand Shape RG Diff vs this core
Storm Tropical Surge Pink Purple Bowling Ball1Storm Surge CorePictured: Storm Tropical Surge Pink Purple
 Storm Symmetric 2.580 0.024 RG −0.006 · Diff −0.003
Storm Pitch Black Bowling Ball2Storm Capacitor CorePictured: Storm Pitch Black
 Storm Symmetric 2.570 0.022 RG −0.016 · Diff −0.005
Brunswick Purple Rhino Pro Bowling Ball3Brunswick Vintage Light Bulb Low RG CorePictured: Brunswick Purple Rhino Pro
 Brunswick Symmetric 2.568 0.032 RG −0.018 · Diff +0.005
Storm Concept Bowling Ball4Storm Radius CorePictured: Storm Concept
 Storm Symmetric 2.610 0.020 RG +0.024 · Diff −0.007
Motiv Frenzy Blue Teal Pearl Bowling Ball5Motiv Excel CorePictured: Motiv Frenzy Blue Teal Pearl
 Motiv Symmetric 2.550 0.030 RG −0.036 · Diff +0.003
Motiv Shadow Tank Bowling Ball6Motiv Flux CorePictured: Motiv Shadow Tank
 Motiv Symmetric 2.570 0.015 RG −0.016 · Diff −0.012

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 Modified LED Core1 of the 3 balls with the Hammer Modified 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 Modified LED Core?

At 15 lb the Hammer Modified LED Core has an RG of 2.586. It ranges from 2.541 to 2.605 across the listed weights.

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

At 14 lb the RG is 2.605.

What is the differential of the Hammer Modified LED Core?

At 15 lb the differential is 0.027. This is a symmetric core, so mass bias is not applicable.

Which bowling balls use the Hammer Modified LED Core?

Hammer NU 2.0 Hammer Bowling Ball, Hammer NU Blue Hammer Bowling Ball, Hammer Purple Solid Reactive Bowling Ball. 1 are in stock now.

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

At 16 lb: RG 2.541, differential 0.035. At 12 lb: RG 2.592, differential 0.031.

How does the Hammer Modified 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 NU 2.0 Hammer 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.

Next lesson

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