Bowling ball core · KR Strikeforce

KR Strikeforce Launch Core

The core inside the KR Strikeforce Rise line

A symmetric core with later rev-up, more length and medium flare, built for medium oil. 5 of the 5 balls with this core are in stock at BowlersMart.

  • Symmetric
  • RG 2.530
  • Diff 0.047

Specs

RG AT 15 LB

2.530

Later rev-up, more length

Revs soonerRevs later

71% of the reactive and urethane balls we stock have a lower RG.

DIFFERENTIAL AT 15 LB

0.047

Medium flare

Less flareMore flare

47% 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.
KR Strikeforce Launch Core specs by ball weight
Weight RG DifferentialDiff Mass biasMB
15 lbUsed on this page 2.530 0.047 None

Other weights are not in our catalog for this core.

Balls with the KR Strikeforce Launch Core

5 of the 5 balls with the KR Strikeforce Launch 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.

KR Strikeforce Rise Purple Black Solid Bowling Ball

KR Strikeforce Rise Purple Black Solid

KR Thrust Solid Reactive

Medium oil

Sale price $99.95 Regular price $179.95In stock

Pearl covers

Pearl covers go longer and turn harder at the end, best on medium oil.

KR Strikeforce Rise Red Black Pearl Bowling Ball

KR Strikeforce Rise Red Black Pearl

KR Thrust Pearl Reactive

Medium oil

Sale price $99.95 Regular price $179.95In stock
KR Strikeforce Rise Red Black Gold Pearl Bowling Ball

KR Strikeforce Rise Red Black Gold Pearl

KR Thrust Pearl Reactive

Medium oil

Sale price $99.95 Regular price $179.95In stock
KR Strikeforce Rise Black Silver Pearl Bowling Ball

KR Strikeforce Rise Black Silver Pearl

KR Thrust Pearl Reactive

Medium oil

Sale price $99.95 Regular price $179.95In stock
KR Strikeforce Rise Blue Teal Pearl Bowling Ball

KR Strikeforce Rise Blue Teal Pearl

KR Thrust Pearl Reactive

Medium oil

Sale price $99.95 Regular price $179.95In stock

Shop the 5 available balls with this core

Where the KR Strikeforce Launch sits

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

DV8 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 0.038Track 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 0.056Columbia 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 0.055Motiv 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 0.045Storm Element Tour A.I. Core, RG 2.470, diff 0.035900 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 0.036Hammer 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 Velocity A.I. Core, RG 2.470, diff 0.053Storm Atomic Core, RG 2.480, diff 0.053Storm RAD-X Asymmetric Core, RG 2.480, diff 0.054Storm ID A.I. Core, RG 2.510, diff 0.055Hammer FAB Asymmetric Core, RG 2.550, diff 0.051Columbia 300 Shifter Core, RG 2.478, diff 0.050Columbia 300 Ricochet Core, RG 2.488, diff 0.054Roto Grip Defense A.I. Core, RG 2.490, diff 0.053Storm Supercoil Core, RG 2.470, diff 0.053Storm Centripetal HD A.I. Core, RG 2.460, diff 0.056Hammer Modified Infamous Core, RG 2.567, diff 0.049Brunswick Ethos Core, RG 2.480, diff 0.053Hammer Hazmat Core, RG 2.470, diff 0.055Roto Grip Momentous A.I. Core, RG 2.480, diff 0.049Track Criterion MD Core, RG 2.500, diff 0.052Storm Ignition Core, RG 2.490, diff 0.052Brunswick Portal X Core, RG 2.473, diff 0.054Ebonite Emerge Core, RG 2.510, diff 0.053Radical Katana Core, RG 2.500, diff 0.050900 Global Meditate LD Symmetric Core, RG 2.560, diff 0.027Columbia 300 Movement Core, RG 2.513, diff 0.053Storm 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)3Radical Snapshot Symmetric Core (pictured: Radical Snapshot Bowling Ball)4Hammer Stacked LED Core (pictured: Hammer Blacklist Bowling Ball)5Storm Atmos A.I. Core (pictured: Storm Typhoon Bowling Ball)6KR Strikeforce Launch Core (pictured: KR Strikeforce Rise Red Black Pearl 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 KR Strikeforce Launch 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 +0.010 · Diff −0.001
Brunswick Crown Victory Bowling Ball2Brunswick Tiered Hexagon CorePictured: Brunswick Crown Victory
 Brunswick Symmetric 2.540 0.045 RG +0.010 · 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 +0.010 · Diff +0.002
Radical Snapshot Bowling Ball4Radical Snapshot Symmetric CorePictured: Radical Snapshot
 Radical Symmetric 2.523 0.050 RG −0.007 · Diff +0.003
Hammer Blacklist Bowling Ball5Hammer Stacked LED CorePictured: Hammer Blacklist
 Hammer Symmetric 2.545 0.047 RG +0.015 · Diff 0.000
Storm Typhoon Bowling Ball6Storm Atmos A.I. CorePictured: Storm Typhoon
 Storm Symmetric 2.530 0.042 RG 0.000 · Diff −0.005

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 KR Strikeforce Launch Core5 of the 5 balls with the KR Strikeforce Launch 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 KR Strikeforce’s description

Questions bowlers ask

What is the RG of the KR Strikeforce Launch Core?

At 15 lb the KR Strikeforce Launch Core has an RG of 2.530. Other weights are not in our catalog for this core.

What is the differential of the KR Strikeforce Launch 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 KR Strikeforce Launch Core?

KR Strikeforce Rise Red Black Pearl Bowling Ball, KR Strikeforce Rise Red Black Gold Pearl Bowling Ball, KR Strikeforce Rise Black Silver Pearl Bowling Ball, KR Strikeforce Rise Blue Teal Pearl Bowling Ball, KR Strikeforce Rise Purple Black Solid Bowling Ball. 5 are in stock now.

How do the KR Strikeforce Launch Core specs change by weight?

Other weights are not in our catalog for this core.

How does the KR Strikeforce Launch 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. Catalog 15 lb figure.

Baseline. The baseline is 265 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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