Roto Grip UFO Alert Bowling Ball

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  • Roto Grip UFO Alert Bowling Ball and Core
  • Roto Grip UFO Alert Bowling Ball
  • Roto Grip UFO Alert Bowling Ball Core
MSRP: $279.95
— You save $95.00
Frequently bought together:


Roto Grip UFO Alert Bowling Ball

  • Color: Purple Solid / Emerald / Teal
  • Coverstock: e-TraxTM Hybrid Reactive
  • Weight Block:  E.T.™ Core = Equalizer Technology™ (Asymmetrical)
  • Factory Finish: 1500-grit Polished
  • Flare Potential: High
  • Radius of Gyration (RG): 16lbs - 2.52; 15lbs - 2.52; 14lbs - 2.52
  • Differential (Diff): 16lbs - 0.054; 15lbs - 0.054; 14lbs - 0.054
  • Intermediate Differential (Diff): 16lbs - 0.016; 15lbs - 0.016; 14lbs - 0.016
  • Fragrance: N/A

Additional product information:


Assembled for every bowler in this galaxy, the UFOTM Alert is here to help you navigate those Medium to Medium/Heavy Oil Conditions with ease. No matter your style, no matter your rev rate, no matter your speed, the E.T.TM Core (Equalizer Technology Core) with its built in cavities, is sure to create great overall core motion every time due to the added mass displacement when drilled. And we can’t forget about the eTraxTM Hybrid Coverstock which is made of 2 parts pearl and 1 part solid. This cover combination aids in creating plenty of responsiveness to friction down lane without being too angular. Thus, making this combination of core and cover one of the most ideal options ever created for most any house type oil condition on planet earth.

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Additional Information

Lane Condition:
Factory Finish:
Polished 1500 Grit
Core Type:
Hybrid Reactive
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41 Reviews

  • 5
    The reacts good on medium to dry lanes

    Posted by Jerry sicard on Nov 19th 2021

    A good ball for medium to dry lanes.

  • 5
    Roto Grip UFO Alert

    Posted by Cooper Mathewson on Oct 30th 2021

    Roto Grip UFO Alert Core: E.T. = Equalizer Technology Cover: e-Trax Hybrid Finish: 1500 Polish RG: 2.52 Differential: 0.054 The Roto Grip UFO Alert is a medium-heavy oil polished hybrid that gets down lane with ease and gives me a lot of room. It has been my go to ball the last few weeks in a heavier house shot league. I am coming back from a recent surgery and I am not as accurate as I usually am. The Alert is giving me miss room on both sides of my line, which is much needed right now. It is strong but controllable. For my style, the closest current Storm/Roto/900G comparison ball would be the Storm Incite. The Alert goes a touch longer and gives me a little more angle than the Incite. In my arsenal it falls between two of my current favorites, the Roto Grip RST X-1 and the Storm Phaze 3.

  • 4
    UFO Alert review by Tommy Gollick

    Posted by Tommy Gollick on Oct 29th 2021

    The UFO Alert is a hybrid version of the UFO released last year. The cover is called eTrax hybrid reactive and comes from factory 1500 grit polished. The Alert has the E.T. core with built in cavities that replicate using a balance hole. The undrilled numbers in 15lb bowling balls come to 2.52 Rg, 0.054 differential, and intermediate diff of 0.016. The purple solid/ emerald teal is a great looking color combination. I drilled the UFO ALert 4.5 X 3 x 4. This is the same layout I have on my Incite which too is a hybrid. The Alert has easy length with a very strong hard arch in the backend of the lane. This reaction is best suited for me when on blended patterns like USBC White, or patterns that don’t have a huge ratio of oil to dry. The Alert can be very clean in the oil, and a little over responsive on the dry if the ratio is too high. Comparing the Alert to my Incite, the Alert is much easier through the heads, and responds to friction very aggressively for me. Putting a little surface (fresh 3000 abralon pad) can smooth out the responsiveness to friction some, but the ball still wants to retain speed better than the Incite. I’m guessing it’s just the nature of the coverstock formula. To use the UFO Alert on the left side of the lane, I really need the right conditions for it to perform optimally. The left side of the lane beds just aren’t as scratched up as much as the right side of the lane. Therefore, bowling balls that don’t want to slow down and then respond strongly to friction, can be a bit too angular off the spot for my bowling style. I really would like to use the UFO Alert more, as many righties I see throwing it, it rolls fantastic. A second UFO Alert with a stronger drilling to help the ball get into the roll phase quicker, would be the trick for me to take advantage of this unique core concept. Thank you for taking the time to read my review of the UFO Alert.

  • 5
    UFO Alert 14lbs

    Posted by Bowling Bigger on Oct 27th 2021

    UFO Alert: Core: E.T. Coverstock: eTrax Hybrid Reactive Rg: 2.52(14lbs) Diff: .054 (14lbs) Intermediate Diff: .016 (14 lbs) PAP: 5 1/8 over and 7/16 up I drilled the UFO ALERT up 60 x 4.5 x 30. I have lightly touched up the surface with 2000 abralon lightly. The UFO ALERT is a strong round reaction that should be a staple in tournament bags. Not too flippy at the spot but reliable motion that is not hard to control. Compared to my DARK CODE, the ALERT blends out the oil and is a little smoother and about 2-3 boards less in overall hook. The DARK CODE is stronger off the friction but still controllable but can also become a little over/under. The ALERT tends to blend the pattern better. When the ALERT is to strong, I was able to go to my Zen or my Burner Solid to get through the fronts a little easier. Overall a solid ball with a predictable motion. Daniel Schank Storm Pro Shop Staff Turbo Grips Pro Shop Staff Logo Infusion Staff Bowling Bigger

  • 5
    Roto Grip UFO Alert review by Lonnie Pemberton

    Posted by Lonnie T Pemberton on Oct 26th 2021

    LANE CONDITION Length:41 Volume:Medium Type (THS, Sport Pattern etc):THS COMMENTS Core: E.T. = Equalizer Technology Cover: e-Trax Hybrid Finish: 1500 Polish RG: 2.52 Differential: 0.054 Right-Handed Tweener Speed: 12-13 mph Rev Rate: 315 PAP: 4 7/8 Right 3/8 Up Ball Layout: 50 X 4 3/8 X 55 VLS 4 3/8 X 4 1/4 X 3 1/2 The UFO Alert is the second release to feature the ET Core. The core was designed to mimic a symmetric core after a balance hole was placed in it. The hybrid Etrax cover creates a new option to take advantage of the smooth predictable motion provided by the ET Core. The UFO Alert is sort of a benchmark ball in the high performance range. It definitely outhooks most balls that feature such a consistent rolling ball. In my opinion this ball is very unique at its performance level. The other balls with this kind of core/cover strength are either noticeably earlier or later rolling by comparison. This ball creates enough motion in fresh oil to be useable right away but is so continuous that you can stay with it through transition. I threw the UFO Alert on my home centers house shot this summer. There was alot of friction at the time so throwing a ball as strong as the Alert required me to be left on the fresh. Suprisingly, despite the midlane motion of the ball, i didn't have any carry issues until the 3rd game. To begin the Fall league season the center changed to a slicker oil, added volume and lengthened the pattern. This is where the UFO Alert really shined. This is easily one of my favorite balls to throw on longer patterns. Straighter angles on the fresh transitioning to a more left to right ball path without ever feeling like I'm losing either my reaction or my carry is pretty unique. I would recommend to anyone that they give this ball a try. It fits so many games and such a wide array of lane conditions that its a no brainer.

  • 5
    Roto Grip UFO Alert By Roto Grip Staff Chase Roloson

    Posted by Chase Roloson on Oct 24th 2021

    UFO Alert • High Performance • HP4 Coverstock • e-Trax Hybrid Reactive Finish • 3000 Grit Abralon Adjusted Core • E.T. Asymmetric R.G. • 2.52 Differential • 0.054 Int. Differential •.016 Layout • Pin Below Ring, Mass below Thumb Thoughts: My intent with this ball was to fit a gap between my HP4/Premier and my high end symmetric pieces, looking for a clean and round shape i could keep the pocket in front of me on tricky patterns. With the layout i used i seen a very clean and round controllable shape out of this piece. This ball allows me to square up and stay closer to the friction on cliffed patterns. For me it is not a every pattern ball but it sees its time on the tougher stuff. In comparison to a storm dark code, with this layout i saw the ball about 4 boards straighter with a strong controllable read in the midlane and a smooth arc on the back end. Chase Roloson Ko’s Proshop Staff Roto Grip Proshop Staff #stromnation #squadrg #strikingworldwide

  • 5
    The UFO Alert is awesome!

    Posted by Rick Klimowicz on Oct 23rd 2021

    UFO Alert • High Performance • HP4 Coverstock • e-Trax Hybrid Reactive Finish • 1500 Grit Abralon Core • E.T. Asymmetric R.G. • 2.52 Differential • 0.054 Int. Differential •.016 Layout • 45 x 4.25 x 35 Tester PAP = 4 ½ R x 3/8 D • Tester Axis Tilt = 12° •Testers Rev Rate = 325 Test Pattern = 42’ THS • Modified, Kegel Stone Street Being new to the Roto Grip family this year, I am impressed at how competitively strong their bowling balls perform time and again. The UFO Alert is another excellent example! Built with the e-Trax Hybrid Cover and the E.T. Core, the UFO Alert is a clear choice for your arsenal. So, let’s take a look at how the UFO Alert performs on a THS. The E.T. (Equalizer Technology) Core has some serious zest to it without being overbearing. As I looked up the ten board on a fresh THS, this core had a smooth motion in the mid-lane and a decisive turn in the backend. But, what really set the E.T. Core apart for me was its performance when entering the roll phase! Like in my review of the UC2, the E.T. Core stands up with authority and rolls through the pins with the inertia of a freight train going downhill! Then it hits and keeps on going! Even when I moved in and targeted 18 out to 7-8 down the lane, the E.T Core kept my slow rev rate hand in the game! I could count on it! The e-Trax Hybrid cover is an excellent blend for medium to heavy THS oil. The solid portion of this mixture allowed the ball to clear the heads quickly and read the mid-lane smoothly. The pearl portion of this hybrid mixture allowed me to get the ball down lane without it burning up, as you would see with a solid cover late in the night by leaving ten pins. I found tweaking the cover with 3000 grit Abralon handled better for my high-speed, low-rev hand as it eliminated effects from too much carry down. Further, as I moved inside, the surface change kept the UFO Alert in play for me through a whole night of highly skilled trios! This cover is a perfect and reliable cover under many conditions. My conclusion is that I highly recommend the UFO Alert for any higher-speed, lower-rev player. With its one-two punch of E.T. Core and e-Trax cover, the UFO Alert will deliver shot after shot and night after night. Further, I have found the UFO Alert to be a reliable and powerful ball after using it on a THS in many houses. I would suggest seeing your local pro shop operator today to have it ready for tonight’s league! Rick Klimowicz Storm Products Pro Shop Staff Roll the Ball Pro shop Penndel, Pa

  • 5

    Posted by Anthony Wiegand on Oct 21st 2021

    If you're looking for a big asym that you can move left with, look no further than the UFO Alert! This hybrid reactive coverstock fused with E.T. core makes this ball good on almost any condition. This ball finished at 1500grit polished allows players to start with this ball on the fresh and move deeper and deeper into the lane and watch this ball drive. This is going to be a piece in my bag for a while. Don't sleep on this ball and get to your local pro shop and to get one drilled!

  • 5
    RG UFO Alert

    Posted by Keith Cordy on Oct 20th 2021

    Really enjoying the eTrax Hybrid cover. No over/under reaction just glides through the fronts, great midline read with power. Drilled mine to replace my 900G Volatility Torque which was too flippy and over/under. Specs are RG 2.52 Diff .054 MB .016. Best suited for heavy/medium volumes depending on your stats Used my favorite pin down layout 50x4 1/8x75 which gives me length with a strong response at the breakpoint. Same shape I get from my pin down OG Volatility (S86R Hybrid) just 3-4 boards less. Just a very predictable asymmetrical Can be my first ball on league night or great transition ball on medium patterns at tournaments. I would recommend this ball for anyone looking for a medium strong asymmetrical or if the were replacing a Hyper Cell Fused #StrikingWorldwide #SquadRG #StormNation #12inaRowProshop

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