RST X-4


 
Roto Grip RST X-4
Roto Grip
Create Custom Ball Comparison
Release Date
Overseas/International Release

Translated from Japanese:

Roto Grip products are popular with seniors and women due to their good control performance.

This product has a medium oil strength setting, and the high inertia "RST™ Core" makes it a ball with a strong backend. In front of the lane, the straight-line force is maintained, and the axis moves with a strong roll from the middle. The hooking point is also a ball that can be seen well.

It shows a sharp bend, but it can be pitched without being violent, and it inherits the ease of handling of lotto products.

In addition, the pitching line is easy to see, and the ball is finished in a way that is easy to respond to changes in conditions.

Factory Finish
1500 Polished
MicroTrax Pearl Coverstock
Type
Pearl Reactive

This coverstock technology is a banger regarding performance in the pearlized category. Featuring a 100% nanoparticle load dispersed evenly throughout, this pearlized concoction provides traction and response to friction while maintaining its surface profile over a longer period of time to ensure you get maximum performance each and every time. For the record, the pearl version of MicroTrax displaces oil at the highest rate of any of the pearl covers we offer today. Basically, as our token of our appreciation and thanks to you, we gift you added forgiveness on those not-so-great shots off your hand.

Roto Star Tour (RST) Core
Roto Grip 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
RG
2.520
Diff
0.049
MB Diff
0.015
15 pounds
RG
2.530
Diff
0.053
MB Diff
0.016
14 pounds
RG
2.550
Diff
0.053
MB Diff
0.016
13 pounds
RG
2.570
Diff
0.032
MB Diff
0.010
12 pounds
RG
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.

Similar Balls
Balls Similar to the Roto Grip RST X-4
Ball Brand Comparison Grade Coverstock Factory Finish Core RG Diff MB Diff US/Overseas Release Discontinued
RST X-4 MicroTrax PearlPearl Reactive 1500 Polished Roto Star Tour (RST)Asymmetric 2.530 0.053 0.016
RST X-2 A eTrax Plus PearlPearl Reactive 1500 Polished Roto Star Tour (RST)Asymmetric 2.530 0.053 0.016
RST X-1 Squad A eTrax-P20Pearl 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
Wolverine Mutant A- S74 PearlPearl Reactive 1500 Polished Lacerate 2.0Symmetric 2.540 0.053
Solar Parallax A- NRG 3 PearlPearl Reactive 1500 Polished AerofloAsymmetric 2.520 0.054 0.019
Power Solution A- NeX PearlPearl Reactive 1500 Polished RAD-AAsymmetric 2.520 0.051 0.014
Force Pink Label A- GPS Navigational ATX PearlPearl Reactive 4000 Abralon SG PrecessionalAsymmetric 2.530 0.051 0.019
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
Nuclear Cell A- eTrax-P20Pearl Reactive 1500 Polished NucleusAsymmetric 2.520 0.056 0.018
Honey Badger Extreme 2024 A- S77M PearlPearl Reactive 1500 Polished Grapnel 2.0Asymmetric 2.540 0.048 0.012
Attention M A- XtremeTrax+ PearlPearl Reactive 1500 Polished MomentousAsymmetric 2.500 0.053 0.011
Attention-S A- eTrax Plus PearlPearl Reactive 1500 Polished MomentousAsymmetric 2.500 0.053 0.011
Winner A- VTC-P18Pearl Reactive 1500 Polished Altered HotshotSymmetric 2.540 0.054
Attention Black Pearl A- Hyper Response PearlPearl Reactive 1500 Polished MomentousAsymmetric 2.500 0.053 0.011
Honey Badger Extreme 2022 A- S74R PearlPearl Reactive 1500 Polished Grapnel 2.0Asymmetric 2.540 0.048 0.012
Journey A- TX-16 PearlPearl Reactive Reacta Gloss F-8Symmetric 2.520 0.053
Mixed Breed Pearl A- Xiphos II PearlPearl Reactive 1500 Polished Mixed BreedAsymmetric 2.520 0.052 0.015
No Rules Pearl A- Amped PearlPearl Reactive 1500 Polished ChaoticAsymmetric 2.510 0.053 0.018
Trend SE A- NeX PearlPearl Reactive 1500 Polished PistonSymmetric 2.520 0.049
Fate A- ReX PearlPearl Reactive Reacta Gloss F-8Symmetric 2.520 0.053
Proof Pearl A- Prime Response PearlPearl Reactive 500/1000 Siaair, Crown Factory Compound ProofAsymmetric 2.519 0.052 0.020
Beyond Infinity A- HK22 - A.X.H. PearlPearl Reactive 500/1000/1500 Siaair, Crown Factory Compound InfinityAsymmetric 2.521 0.051 0.010
Emerge A- HK22 - Optimize PearlPearl Reactive 500/1000/1500 Siaair, Crown Factory Compound EmergeAsymmetric 2.510 0.053 0.021
Incredible Giant A- Reverie 4 (RVR 4) PearlPearl Reactive 4000 Sanded IncredibleAsymmetric 2.514 0.054 0.021