Roto Grip Idol Cosmos Bowling Ball

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  • Roto Grip Idol Cosmos Bowling Ball and Core
  • Roto Grip Idol Cosmos Bowling Ball
  • Roto Grip Idol Cosmos Bowling Ball Core
MSRP: $219.95
— You save $55.00
Frequently bought together:


Roto Grip Idol Cosmos Bowling Ball

  • Color: Stardust Teal
  • Coverstock: XtremeTrax Pearl Reactive
  • Weight Block: Ikon Core
  • Factory Finish: 4000-grit Abralon
  • Flare Potential: High
  • Radius of Gyration (RG): 16lbs - 2.49; 15lbs - 2.49; 14lbs - 2.54
  • Differential (Diff): 16lbs - 0.049; 15lbs - 0.052; 14lbs - 0.049
  • Intermediate Differential (Diff): N/A
  • Fragrance: N/A


Due to the success and overwhelming popularity of the IDOL Helios, we felt it wasan absolute must to create a pearlized version using the exact same XtremeTrax coverstock technology.

On the inside you will find the same low RG symmetric Ikon Corewhile on the outside you will find our newest never before used pearlized coverstock technology known as XtremeTrax Pearl ReactiveAnd just like the original solid versionthis version contains chemically charged nano-particles thanks to our out of this world coverstock chemistry.

What does this mean?... It means the XtremeTrax Pearl Reactive coverstock will provide more traction in oil than our eTrax PLUS Pearl or eTrax Pearl reactive covers, while still providing plenty of responsiveness to friction down lane. Making the IDOL Cosmos the perfect complement to the IDOL Helios and the rest of the Roto Grip line of bowling balls.

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Additional Information

Lane Condition:
Factory Finish:
Sanded 4000 Abralon
Core Type:
Pearl Reactive
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37 Reviews

  • 4
    Roto Grip - Idol Cosmos

    The all new Roto Grip Idol Cosmos bowling ball features the Ikon Core and the pearlized XtremeTrax coverstock, which should result in a cleaner motion through the front of the lane while providing stronger reaction down lane. I have seen so many different Idol bowling balls roll very well for wide variety of bowlers. Personally, I haven’t had much success with the Idol series. I have tried several layouts on different Idol’s and just couldn’t seem to find the sweet spot. I drilled my Idol Cosmos with my usual pin-up layout: 65 x 5 x 30. I expected this ball to flare a good amount and, due to cleaner coverstock, I thought it could be a good transition ball when stronger asymmetrical bowling balls start be too much. The Idol Cosmos is a very “rolly” and “forward” to me. I was expecting a little more response in the friction out of this ball. For my ball roll and the layout I chose for this ball, it seems to be “in between” – too much flare to keep it online, to “forward” to open up the lane. I did find a decent use out of this ball on shorter patterns, where I really needed to slow down the backend motion. I can see this ball being pretty good on shorter “house-shots” as well. I would, perhaps, drill another Idol Cosmos with a pin-down layout and use it as a “specialty” ball for shorter oil patterns. Want to see me throwing the Idol Cosmos? Watch my video on YouTube:

  • 5
    Idol Cosmos

    The Idol line was SO Amazing in the beginning with the first 3 domestic releases. I much of a fan the few in the middle, but with the NEWEST inception of the Idol, the Cosmos, I am seeing this to be very versatile. The Idol Cosmos while being a peal, has a very heavy nano load. It reads the mids well with a strong but not necessarily angular motion. This ball takes well to surface adjustment. the more surface, the more it blends the dry but with polish, this thing can get after it down lane! My layout is pin up, 4x5x2! Other balls getting a lot of play: Dark Code-4x6x2 Night Road-4.5x4.5x3.75 RST-X3-4x5x2 Wolverine Dark Moss-4.25x5.25x2

  • 5
    Idol Cosmos Review

    Idol Cosmos Rev Rate: 375 Ball Speed: 15-16 mph PAP: 5 inches over, 1/2 inch up Layout: 60x5x30 The Idol Cosmos is the fifth installment in the Idol series stateside. In testing this ball, I found it to be buttery smooth and very deliberate with its downlane motion. I was very surprised at this because I had envisioned it doing something else…like more of the Idol Pearl than a bigger version of the !Q Tour. But I love it! Its almost like OG Idol meets a touch of the Idol Helios…the smoothness of the OG with a sprinkle of the slow strong nature of the Helios. It’s another piece of versatility that’s on my “bowling rack” to add to my bag for leagues and tournaments. Another popular Idol to bang out high scores! Jamaal Oliver Chad’s Pro Shop Andy B’s - Bartlett Memphis, TN

  • 5

    Most versatile release this year for me. Drilled 65 x 3.5 x 30 close to my house shot layouts gives me a smooth and predictable shape and motion during league and most local tournaments. Compared to my Zen it dug in the mid lane sooner due to the 4k Fast cover. Definitely a slight step up. Slightly less than a Helios with the same carry percentage Performed well from multiple angles on the 40' Dutchman pattern thus the versatility of the cover combined with the Ikon core. Should be apart of your league and tournament arsenal this fall. #SquadRG #stormnation #GoGlobal #iambowling Keith Cordy 900 Global Staff Ambassador

  • 5
    Cosmos Ball Review

    Ball Review Idol Cosmos, RG: 2.49 Dif: .052 Cover: ExtremeTrax Pearl 4K Finish PAP 5 1/8 over ¾ UP, Medium/Ball Speed Rev Rate 275-325 Layout: 4 x 4 x 1 ¾ The return of a Pearl addition to the Idol lineup and definitely a nice surprise. The Cosmos is a great addition to the pearl line up. It has the performance that bowlers expect from the idol line. It’s smooth and rounded shape is very predictable. It has a strong backend motion with good continuation from the pins. The Cosmos with the ExtremeTrax Pear cover at 4k finish responds hard off the friction but doesn’t seem to overreact. The Cosmos picks up down lane and holds its energy well. The Cosmos will fit most play styles and conditions. I definitely recommend this ball if you are looking for a new smooth ball with a strong backend pearl.

  • 5

    The Idol Cosmos is the newest edition to the Idol line. It features the same core as all the previous Idol balls but is now wrapped in XtremeTrax pearl. For anyone that loved how the Idol pearl shaped but wished it has a little more teeth in oil or for someone that loved the OG but didn’t like how it shaped from farther left, look no further. The Idol Cosmos showcases the best of both worlds by providing enough control for the fresh but enough shape to allow you to open up a lane before going to quicker response balls. The Idol Cosmos for me will be fantastic on fresh house shots or a great three ball during a longer tournament block.

  • 5
    Roto Grip Idol Cosmos by Casey Murphy

    Orientation: Right Handed Rev Rate: 400 RPM Speed: 16-17 MPH PAP: 4 ½ over and ½ up Location: Enterprise Park Lanes, Springfield MO Pattern: High Volume THS VLS Layout: Layout 2: 4 ½ x 4 x 4 1/8 (pin below bridge) The Idol Cosmos is an updated version of the Idol Pearl. It’s got more additive in the cover and rolls earlier while maintaining the shape on the backend. The Idol Pearl got a little “squirty” in oil and the Idol Cosmos solves this issue with the stronger cover. It never wants to miss the midlane so I feel I can use it earlier in a block. This one is simple, if you like the Idols, this is another great one!

  • 5
    Roto Grip Idol Cosmos

    Drilled this ball with the pin over the bridge with measurements of 4 3/8 by 43. Pretty similar to how I have drilled previous pearl balls (Zen to be specific) looking to get a slightly different motion and that's exactly what I got. The pearl coverstock has a little surface to it so it doesn't have a quick motion off the dry, but instead it's very controllable, very round, while not sacrificing continuation. Took this ball out right after drilling for a couple games on THS and was able to play a couple different parts of the lane. Was able to keep my angles in front of me with a little extra ball speed, and also move left and circle it through the oil with a very smooth backend motion. If you are looking for an extreme hockey stick, this is not the ball for you, but if you want a controllable and versatile pearl ball, this will be a great add to the bag. Brent Ritchie SPI Staff Member

  • 5
    Idol Cosmos

    Roto Grip outdid itself once again with the newest addition to the Idol series. The Idol Cosmos, for me, is a great one-two punch to the Idol Helios. Since the Cosmos is a pearl cover, it will save more energy for the back part of the lane. The Helios is a little earlier, so when I have to move left, then switching to the Cosmos becomes valuable. I have the Cosmos drilled pin over my bridge with the CG kicked 1' to the right. Very pleased with this ball, it gives me a nice, predictable motion.

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