- Cover
- eTrax PLUS Pearl
- Factory finish
- 1500-grit Polish
- Color
- Tanzanite
- Core (15 lb)
- Roto Star Tour
- R.G. / Differential / Bias
16 lb 2.520 0.049 0.015 15 lb 2.530 0.053 0.016 14 lb 2.550 0.053 0.016 13 lb 2.570 0.032 0.010 12 lb 2.590 0.029 0.008 - Release date
- August 20, 2021
- Balls with the same cover
- This is the only ball in the Bowlidex with the eTrax PLUS Pearl cover.
- Balls with the same core
- These balls have the same 15-lb Roto Star Tour core as the RST X-2:
- From the manufacturer
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.
| Name | Cover | Released | |
 | RST X-3 Roto Grip | MicroTrax Hybrid | Aug 19, 2022 |
 | RST X-1 Roto Grip | MicroTrax Hybrid | Nov 27, 2020 |