Roto Grip RST X-2 Bowling Ball

Release Date

Aug 2021

PBA Approval Date

Jul 26, 2021

Discontinued

Given the continued success of the RST™ X-1, we knew the next ball in the series using the Roto Star Tour Core was going to need a special coverstock wrapped around it as well. So, after countless tests involving multiple players of different styles, we determined that the eTrax™ pearl material gave us the type of reaction we were looking for, but we wanted something a little more while still using that same chemistry. So, the R&D team went to work changing the ratios and other variables until we settled in on the NEW eTrax™ PLUS Pearl Reactive formula that provides a larger footprint throughout the entire lane without reducing the responsiveness to friction down lane. Creating yet another viable pearlized coverstock option for the Roto Grip family of balls.

Factory Finish

1500 Polished

eTrax Plus Pearl Coverstock

Type

Pearl Reactive

Cleaner through the front of the lane – CHECK! Provides traction throughout the mid-lane – CHECK! The most responsive eTrax coverstock down lane we have ever created – CHECK! The eTrax PLUS coverstock material is the most advanced version of the eTrax chemistry we have ever concocted. After countless hours of testing on the lanes paired with mixing, re-mixing and adjusting in the R&D Lab, we found a way to enhance the overall performance of this material by changing ratios both up and down in the chemistry in order to create this overall “stronger” version. Thus, making this cover more aggressive and responsive than the original eTrax covers, but not as early and smooth as the MicroTrax™ covers.

Engineered for Medium/Heavy to Heavy Oil Conditions

Roto Star Tour (RST) Core

Professional bowlers like to see continuous motion down lane with minimal deflection as the ball enters the pocket due to their rev rates usually being on the higher side. This logic was the basis of development by the R&D team as they looked to create a core that would maintain dynamics after drilling in order to maintain a higher level of core torque down lane. The larger mass at the base of the core does indeed create that. Especially since when drilled, the thumbhole will always end up near the bottom of the void area not to affect the bottom mass of the core all that much. Thus, making this core a “Tour Level” type core design.

Core Type

Asymmetric

16 pounds

2.520

Diff

0.049

MB Diff

0.015

15 pounds

2.530

Diff

0.053

MB Diff

0.016

14 pounds

2.550

Diff

0.053

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

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Similar Balls

Balls Similar to the Roto Grip RST X-2
Ball	Comparison Grade	Coverstock	Factory Finish	Core	RG	Diff	MB Diff
RST X-2		eTrax Plus PearlPearl Reactive	1500 Polished	Roto Star Tour (RST)Asymmetric	2.530	0.053	0.016
Parallax Effect	A-	Traction X7 PearlPearl Reactive	1500 Polished	AerofloAsymmetric	2.520	0.054	0.019
Nuclear Cell	A-	eTrax-P20Pearl Reactive	1500 Polished	NucleusAsymmetric	2.520	0.056	0.018
No Rules Pearl	A-	Amped PearlPearl Reactive	1500 Polished	ChaoticAsymmetric	2.510	0.053	0.018
Hyper Cell Skid	A-	73MHPearl Reactive	1500 Polished	NucleusAsymmetric	2.520	0.056	0.018
Hell Raiser Return	A-	Inciter Max Flip PearlPearl Reactive	500/1000/1500 Siaair, Crown Factory Compound	Hell Raiser D.O.T.Asymmetric	2.537	0.053	0.016
Fate	A-	ReX PearlPearl Reactive	Reacta Gloss	F-8Symmetric	2.520	0.053
Altered Reality	A-	S84 Response PearlPearl Reactive	1500 Polished	DisturbanceAsymmetric	2.490	0.052	0.018
Command	A-	ARSPearl Reactive	500 Siaair, Crown Factory Compound	MovementAsymmetric	2.513	0.053	0.021
Crux Pearl	A-	ERG PearlPearl Reactive	1500 Polished	CatalystAsymmetric	2.500	0.052	0.017
Dark Code	A-	ReX PearlPearl Reactive	1500 Polished	RAD4Asymmetric	2.500	0.058	0.020
Emerge	A-	HK22 - Optimize PearlPearl Reactive	500/1000/1500 Siaair, Crown Factory Compound	EmergeAsymmetric	2.510	0.053	0.021
UFO Alert	A-	eTrax HybridHybrid Reactive	1500 Polished	Equalizer Technology (E.T.)Asymmetric	2.520	0.054	0.016
Villain Scorn	A-	Hexion SE (Strength Enhanced)Pearl Reactive	5000 LSP	SinisterAsymmetric	2.550	0.053	0.018
Journey	A-	TX-16 PearlPearl Reactive	Reacta Gloss	F-8Symmetric	2.520	0.053
Hitman	A-	N-ForcerPearl Reactive	500 Siaair, Crown Factory Compound	HitmanAsymmetric	2.524	0.050	0.020
Incredible Giant	A-	Reverie 4 (RVR 4) PearlPearl Reactive	4000 Sanded	IncredibleAsymmetric	2.514	0.054	0.021
Incredible X	A-	USY 1 PearlPearl Reactive	1000 Polished	IncredibleAsymmetric	2.514	0.054	0.021
Quantum Evo Response	A-	HK22 - Evolution PearlPearl Reactive	500/1000/1500 Siaair, Crown Factory Compound	QCS-24Asymmetric	2.511	0.053	0.024
Show Me The Money Black	A-	USY 2 PearlPearl Reactive	3000 Sanded	Contagion V2Asymmetric	2.517	0.052	0.026
Trident Nemesis	A-	Infusion HV (High Volume) PearlPearl Reactive	5500 LSP	SidewinderAsymmetric	2.520	0.049	0.013
Volatility Torque	A-	S84 Response PearlPearl Reactive	1500 Polished	Volatility AsymmetricAsymmetric	2.490	0.050	0.014
Quantum Evo Pearl	A-	EvolutionPearl Reactive	500/1000/1500 Siaair, Crown Factory Compound	QCS-24Asymmetric	2.511	0.053	0.024
Zen	A-	S77 Response PearlPearl Reactive	1500 Polished	MeditateSymmetric	2.490	0.051
Beyond Infinity	A-	HK22 - A.X.H. PearlPearl Reactive	500/1000/1500 Siaair, Crown Factory Compound	InfinityAsymmetric	2.521	0.051	0.010