Roto Grip UFO Alert Bowling Ball

Release Date

Jun 2021

PBA Approval Date

Nov 1, 2004

Discontinued

Our obsession with helping players of all ages and styles conquer various lane conditions while abiding to forthcoming governing rules, led to the development and creation of the asymmetrical E.T.™ Core (Equalizer Technology Core) which features built in cavities in order to increase weight displacement after drilling without a balance hole to increase overall ball motion.

Factory Finish

1500 Polished

eTrax Hybrid Coverstock

Type

Hybrid Reactive

Our purest form of reactive material to date, the Enhanced Traction (eTrax) coverstock sets the standard as the material to which all other materials are compared and tested. Formulated to provide the “true reactive” response on a variety of conditions by easily clearing the front of the lane while aggressively responding to friction down lane, the eTrax material flexes its resilience and durability day in and day out.

Equalizer Technology (E.T.) Core

E.T.™ Core = Equalizer Technology™ Core... This space aged creation was developed with built in cavities to emulate the use of an extra hole since as of August 2020 the USBC deems them illegal. The built in "Equalizer Cavities" will help increase midlane motion and continuation down lane.

Core Type

Asymmetric

16 pounds

2.520

Diff

0.054

MB Diff

0.016

15 pounds

2.520

Diff

0.054

MB Diff

0.016

14 pounds

2.520

Diff

0.054

MB Diff

0.016

13 pounds

2.570

Diff

0.032

MB Diff

0.010

12 pounds

2.590

Diff

0.029

MB Diff

0.008

Shop

* This page contains affiliate links, so I may earn a small commission when you make a purchase through the links below, at no additional cost to you.

Videos

Similar Balls

Balls Similar to the Roto Grip UFO Alert
Ball	Comparison Grade	Coverstock	Factory Finish	Core	RG	Diff	MB Diff
UFO Alert		eTrax HybridHybrid Reactive	1500 Polished	Equalizer Technology (E.T.)Asymmetric	2.520	0.054	0.016
Parallax	A	TractionX7 HybridHybrid Reactive	1500 Polished	AerofloAsymmetric	2.520	0.054	0.019
Hyper Cell Fused	A	eTrax-H18Hybrid Reactive	1500 Polished	NucleusAsymmetric	2.520	0.056	0.018
Atlas Hybrid	A-	HK22 - Formula 1 HybridHybrid Reactive	500/1000/1500 Siaair, Crown Factory Compound	AtlasAsymmetric	2.520	0.054	0.018
Baller	A-	ERT HybridHybrid Reactive	500/2000 Abralon	Big TimeAsymmetric	2.520	0.052	0.018
RST X-3	A-	MicroTrax HybridHybrid Reactive	4k Fast	Roto Star Tour (RST)Asymmetric	2.530	0.053	0.016
Infinity	A-	A.X.H. HybridHybrid Reactive	500/2000 Siaair Micro Pad	InfinityAsymmetric	2.521	0.051	0.010
RST X-1	A-	MicroTrax HybridHybrid Reactive	3000 Abralon	Roto Star Tour (RST)Asymmetric	2.530	0.053	0.016
Archetype Hybrid	A-	HK22 - QR-11 HybridHybrid Reactive	500/1000/1500 Siaair, Crown Factory Compound	I-Core 3.0 SlimAsymmetric	2.518	0.053	0.020
Sinister	A-	76HHybrid Reactive	4000 Abralon	CageAsymmetric	2.520	0.054	0.015
Nuclear Cell	A-	eTrax-P20Pearl Reactive	1500 Polished	NucleusAsymmetric	2.520	0.056	0.018
Emerge Hybrid	A-	HK22 - Optimize HybridHybrid Reactive	500/1000/1500 Siaair, Crown Factory Compound	EmergeAsymmetric	2.510	0.053	0.021
Trident Horizon	A-	Coercion MXC (MaXimum Continuation) HybridHybrid Reactive	4000 LSS	SidewinderAsymmetric	2.520	0.049	0.013
Warrant	A-	N-Forcer SF HybridHybrid Reactive	500/1000 Siaair, Crown Factory Compound	CaptiveAsymmetric	2.505	0.054	0.012
Respect	A-	79 Alert HybridHybrid Reactive	1500 Polished	TetraSymmetric	2.490	0.052
Quantum Evo Hybrid	A-	Evolution HybridHybrid Reactive	500/2000 Siaair Micro Pad	QCS-18Asymmetric	2.510	0.052	0.018
Parallax Effect	A-	Traction X7 PearlPearl Reactive	1500 Polished	AerofloAsymmetric	2.520	0.054	0.019
RST X-2	A-	eTrax Plus PearlPearl Reactive	1500 Polished	Roto Star Tour (RST)Asymmetric	2.530	0.053	0.016
Aero Dynamix	A-	GSV-X HybridHybrid Reactive	500/1000/1500 Siaair, Crown Factory Compound	AeroAsymmetric	2.504	0.050	0.015
Proof Hybrid	A-	Prime Response HybridHybrid Reactive	500, 3000 Siaair Micro Pad	ProofAsymmetric	2.519	0.052	0.020
Pure Envy	A-	HK22C - Cohesion HybridHybrid Reactive	500/2000 Siaair Micro Pad	LauncherAsymmetric	2.505	0.055	0.021
Drift	A-	S62 HybridHybrid Reactive	1500 Polished	HulaSymmetric	2.540	0.054
Omni Hybrid	A-	GSV 2.0 HybridHybrid Reactive	500/1000 Siaair, Crown Factory Compound	OmniAsymmetric	2.501	0.050	0.013
Redemption Hybrid	A-	Aggression NE HybridHybrid Reactive	500/1000 Siaair, Crown Factory Compound	RedemptionAsymmetric	2.498	0.053	0.015
Hitman Enforcer	A-	N-Forcer PlusHybrid Reactive	500 Siaair, Crown Factory Compound	HitmanAsymmetric	2.524	0.050	0.020