Roto Grip UFO
MicroTrax-S20 Solid
Factory finish
Deep Purple / Baby Blue / Neon Green
Core (15 lb)
R.G. / Differential / Bias
16 lb2.5200.0540.016
15 lb2.5200.0540.016
14 lb2.5200.0540.016
13 lb2.5700.0320.010
12 lb2.5900.0290.008
Release date
January 17, 2020
Balls with the same cover
This is the only ball in the Bowlidex with the MicroTrax-S20 Solid cover.
Balls with the same core
These balls have the same 15-lb E.T. core as the UFO:
Roto Grip UFO AlertUFO Alert
Roto Grip
Jun 18, 2021
From the manufacturer

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.

The newest formulation of our forever famous MicroTrax Technology will create great traction in the heaviest of oils. The MicroTrax-S20™ Solid Reactive coverstock is mixed with a higher nano ratio which means more grab throughout the entire lane.

E.T. Core = Increased Core Motion... MicroTrax-S20 Solid Reactive Cover = Increased Traction in Oil... We wanted to get ahead of the USBC rule change and create a ball that will help those who are used to using a ball with an extra hole in it... We believe in higher scores, so it was only fair to create a bowling ball that is out of this world in terms of technology!

Official site
Retired. This ball is no longer produced by the manufacturer, but it may still be available at pro shops and online retailers in limited weights.

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