RST X-2

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.

Released date: August 27, 2021

Sku: BBMRXW12
Color: Tanzanite

Technical Specifications

  • 12 lbs.
    Radius of Gyration

    2.59

    Differential

    0.029

    PSA

    0.008

  • 13 lbs.
    Radius of Gyration

    2.57

    Differential

    0.032

    PSA

    0.010

  • 14 lbs.
    Radius of Gyration

    2.55

    Differential

    0.053

    PSA

    0.016

  • 15 lbs.
    Radius of Gyration

    2.53

    Differential

    0.053

    PSA

    0.016

  • 16 lbs.
    Radius of Gyration

    2.52

    Differential

    0.049

    PSA

    0.015


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 in the void area not really affect the bottom mass of the core. Thus, making this core a “Tour Level” type core design better known as the Roto Star Tour Core (RST™ Core).




eTrax PLUS Coverstock

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

Product Reviews
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Mike Craig - Storm Products Amateur Staff
August 31, 2021
RST X-2 review by Mike Craig
I drilled the X2 75 x 5 x 20. I have lightly touched the surface with a 3000 pad to get some of the shine off.
X2 review: This is a pearl version of the X1 and it has some of the same motion except further down the lane. My X1 was a little lazy at times and lane shined fairly easy. When I did hit it with 2000 abr, other balls like the PROTON PHYSIX or REALITY were much better looks. The X2 I compared to my DARK CODE, ZEN, and RUBICON UC2. Compared to the DARK CODE, my X2 is less violent off the spot. The DARK CODE can really go sideways on me with my slower speed. The X2 was more forward at the spot. Some of that is the 20* back angle. When I drill asyms with this back layout, they get forward on me earlier and can control the break point. Compared to the ZEN, the X2 is more push and more rounder at the spot. The ZEN is my go to ball when I want to get thru the fronts with good motion that almost never misses the spot. For me, the X2 is a little longer but my ZEN also has 2000 on it at all times. I can see these 2 playing off each other in my rotation. Compared to the UC2, the X2 is earlier and slightly stronger. My UC2 is the go long/finish later look in my bag and the X2 could be the option when I am getting too much length with the UC2.
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WHITE THUMB TAPE

WHITE THUMB TAPE

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