Roto Grip UFO Alert Bowling Ball

(8 reviews) Write a Review
  • 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 $100.00
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.

View AllClose

Additional Information

Lane Condition:
Factory Finish:
Polished 1500 Grit
Core Type:
Hybrid Reactive
View AllClose

8 Reviews

  • 5
    UFO Alert

    Posted by Trent Knoop on Jul 22nd 2021

    Drilling: Pin thru the ring finger and kicked the MB 2 inches right Dual Angle: 45 X 3 X 30 I really like the originally UFO, so I figured this ball was going to be really good as well, especially with it being a hybrid - and I was correct. I already can tell this is going to be a staple in my bag, and will be a go to ball for myself. I've been able to throw this ball on everything that I've bowled. My UFO Alert is a very strong motion. but between the cover and core, it's not too early nor is it too angular. I see it blend the pattern to perfection, and I truly believe everyone should have this piece in their bag.

  • 5
    Roto Grip UFO Alert

    Posted by Dan Marriott on Jul 16th 2021

    UFO Alert. Asymmetrical Hybrid from Roto Grip and man this thing does not disappoint. I decided to drill it how my Hyper Cell Fused was drilled and lets just say that the UFO Alert is STRONG!! I can see myself using this piece on heavier oil patterns with some surface or when the lanes are super tight and the asymmetrical solids are not in play anymore. This ball is no joke, lots of backend and pin carry!

  • 5
    Roto Grip UFO Alert

    Posted by Curtiss on Jun 29th 2021

    Roto Grips newest release in the HP4 line featuring the ET Core, which was in the UFO, paired with the E-Trax hybrid cover. This ball is perfectly compliments the original UFO. When the UFO starts to burn up and read early, you can pull out the UFO Alert and play the same part of the lane. This ball clears the fronts so well, very strong in the mid-lane, and strong on the back end. With as strong as this ball is in the mid lane, it does not lose anything on the end, making the carry fantastic. This ball is very similar for me as the Idol Pearl, but is slightly stronger in the mid-lane, with a bit smoother on the end. What was great about this ball, the further left I moved, it did not lose any hitting power. I feel this is a very versatile ball and can be used with many angles to the pocket. Head down to your local pro shop 7/2/21 and get yours!

  • 5
    Roto Grip UFO Alert review by Trevor Roberts

    Posted by Trevor Roberts on Jun 15th 2021

    The UFO Alert gives you exactly what you need once your solid asymmetric balls are burning up too much energy. In my ball review, I was able to stay further right than with most shiny cover bowling balls. The Alert is smooth through the midlane and because of its controlled motion, won’t force you too far left too early. When I did start to move left, the clean cover responded well to the friction and still got back to the pocket with ease. The versatility from the right and further inside is my biggest take away from throwing it my first two days. This ball can be used from multiple angles and it looked great doing so. I’m excited to throw this ball more in tournaments and while bowling league this summer. Trevor Roberts 2016 PBA Southern Regional Rookie Of The Year Storm Products / Turbo 2n1 Grips / Bowlifi Staff Member Right Handed Rev Rate: 400 Speed: 16 PAP: 5 1/2 up 13/16

  • 5

    Posted by Storm Andrew on Jun 12th 2021

    The original UFO was one of the strongest asymmetrical solids to date. The UFO Alert features the same ET core although this time matched with the E-Trax hybrid cover to prevent reading and grabbing the front part of the lane. With the pearl and polish elements the ball will get through the initial part of the lane without burning up and provide plenty of motion down lane. The hybrid nature of the ball allows it to be more controllable at the break point. This ball is a great step down off the original UFO or any stronger solids, asymmetrical or symmetrical. Also, if the lanes are hooking to early the UFO Alert would be a great ball to begin with.

  • 5
    UFO Alert

    Posted by Adam Chase on Jun 11th 2021

    The UFO Alert is the 2nd release in the HP4 line with the ET Core along with the E-Trax Hybrid coverstock. I drilled mine with a 55 x 5 x 45 drilling which is the same drilling I have on the RST X-1. Comparative to the two, the UFO Alert is cleaner while still maintaining the more continuous shape on the backend. The Alert also gives a little more angularity as well so it is a very good compliment to the RST X-1. Comparing the Alert with the UFO, there is a definite more defined difference in the backend. Since the two balls share the same core, the midlane roll is very similar but the two coverstocks make the biggest difference. The UFO Alert is again cleaner while still giving a smoother reaction in the midlane. The Alert is a great step down from either the UFO or the RST X-1. Compared to the Nuclear Cell, the Alert will be earlier rolling and slightly smoother in the backend due to the hybrid coverstock.

  • 5
    UFO Alert

    Posted by Matt Fazzone on Jun 10th 2021

    Roto Grips newest HP4 line ball features the ET Core, wrapped around the hybrid eTrax cover. I drilled mine 5 x 3 x 4.5 and after throwing this ball for a while I was quite impressed on how smooth it was. This cover is also featured on the Idol Synergy but slightly different because this is two parts pearl one part solid instead of the 50/50 blend found on the Synergy. The UFO Alert really allows me to blend the lane out when they are really wet/dry and doesn’t over react when I miss towards the gutter. I will probably knock the shine slightly off mine to utilize it more as a fresh ball but I can see myself using this ball for entire blocks because of the cover/core combination.

  • 5
    Roto Grip UFO Alert Ball Review

    Posted by Ric McCormick on Jun 10th 2021

    The newest addition in the HP4 Line from Roto Grip is the brand new UFO Alert! This ball features the e-Trax hybrid reactive Coverstock wrapped around the E.T. Core which was previously seen in the original UFO! This UFO Alert will take the place of the previous Nuclear Cell as the shiny ball in the HP4 line! My UFO Alert I have drilled is pin over my ring finger with the mass his right next to my thumb so it’s a little more stacked than normal for me! What I really like about this ball so far throwing it how clean it is through the front part of the lane reads the body of the lane very well but with that Hybrid Coverstock it’s very controllable for a shinier ball! The UFO Alert will come into play on the medium-heavier lane conditions when the lanes are hooking a little bit and the UFO or Rubicon is to early this will give you that clean strong controllable motion!! Head over to your local pro shop 6/18/21 and get yours!

View AllClose