Roto Grip Gremlin Bowling Ball

(36 reviews) Write a Review

Your new favorite pearlized ball has been hatched to help advance your game in ways you didn’t know you needed. Now some will say, “hey, I’ve seen that core shape before” and to those we say, “yes, yes you have.” BUT what we can also say is that you have never seen this MAXED-OUT version of this core shape before known as Rondure™ MaxD. That’s right, our team of mad scientists in the R&D Lab pushed this core shape to its limits by changing the densities of both the block and the slug on bottom to create the highest RG value and highest Differential value this part has ever seen. From its inception, this mild asymmetric shape was created to emulate the motion of a symmetric core shape with a balance hole in it. Fast forward to this newest version, and well, even though previous models were fantastic, this version is without a doubt the longest and most continuous down lane that we have ever seen.

But it doesn’t stop there, the mad scientists in the R&D Lab also managed to formulate a brand-new nano-free coverstock material during this development and testing process as well. That’s right, the versatile response (V-R1) cover formulation was created to handle a wide range of oil conditions and oil types. From the fresh, to the transition, to the burn, this cover provides easy push through the front of the lane while consistently responding to friction down lane without getting out of control.

So, if you are in the market for a pearlized ball that complements your big strong asymmetrical balls, or if you are needing a pearlized ball that allows you to move deeper on the lane and still comes around the corner, then you must add one of these to your bag. But you don’t have to take our word for it. Try it for yourself, we know you will like it. Oh, and don’t worry, it won’t multiply after midnight if there is oil residue left on the coverstock… Or will it?

Color Plum / Raisin / Tanzanite
Coverstock V-R1 Pearl Reactive
Core
RONDURE™ MAXD CORE
RG 2.50
Differential 0.058
Intermediate Diff 0.010
Factory finish Power Edge
Weights 12 thru 16lbs
   

36 Reviews

  • Roto Grip Gremlin

    Posted by Matt Fazzone on Jul 26th 2025

    I drilled my Gremlin 4.5 x 4 x 4.25 with the goal of bridging the gap between my strong asymmetric balls and my more traditional symmetrical pieces. After throwing it for a while, I quickly fell in love with the shape it creates on the lanes. The Rondure MaxD core paired with the V-R1 Pearl coverstock gives me a clean look through the fronts and mids, but what really stands out is how hard it corners downlane — even more than some of my symmetrical balls. It offers a really unique motion: predictable but punchy, and versatile enough to play with shape without sacrificing control. If you're trying to fill that space in your lineup between big asymmetrics and smooth symmetrical pieces, the Gremlin is absolutely worth checking out. It’s already becoming a favorite among bowlers and I can see it being a must-have as the season gets going.

  • Roto Grip Gremlin

    Posted by Darren Wong on Jul 26th 2025

    The Gremlin features Roto Grip’s newest cover stock- V-R1 Pearl. Many have comped the Gremlin to the UC2 and I’d agree that pretty accurate. The pearl cover with power edge finish is pretty clean. The Rondure core that was in the UC2, UC3 and Tour Dynamix has been modified (maxed out) in the Gremlin by changing the density of the block and slug. As a result, the RG and Dif of the Gremlin are higher than the previous balls with Rondure core. For the 15# Gremlin, the RG/Dif/PSA is 2.50/0.58/0.010. The cover core combination results in a clean, easy push through the front part of the lane and rounded continuous down lane motion. So far, I have found on a house pattern the Gremlin still reads when I got it in the oil. When I circled it with my normal release, it did get a little forward as it entered the pocket. But then, I changed my hand position to get a little more tilt and rotation and boom, the Gremlin finished over the 8 pin. On the 44 foot PBA Hardwick pattern, I tried it at the end of a 7 game block, and it read the dry a little too quick. When I opened up my angle to that dry, it missed it. But that is what I would expect on that pattern. The Gremlin is probably not meant for a longer pattern which has been broken down with straight angles through the front. Bottom line, I’d say this is a good, versatile pearl medium asym ball which will fit right in between your strong asyms like the X-Cell, Physix Black Out, RST Hyperdrive, and weaker VEBO, Typhoon, type balls. I drilled mine pin up 2.5 buffer, 4 ½ from my PAP with PSA 4.

  • Roto Grip Gremlin – WWRD 7/18/2025

    Posted by Patrick Dombrowski on Jul 24th 2025

    Cover: V-R1 Pearl Reactive Core: Rondure MaxD RG: 2.50 RG. Diff.: 0.058 Finish: Power Edge Roto Grip’s new Gremlin is a Pearl Asymmetrical piece that is good for Medium-Heavy Volume patterns. PAP is 5 5/16 R 1 3/16 Up. Rev Rate: 400. Speed: 16.5. Drilled this piece with the Pin up between the fingers, CG kicked out 1” from the palm, and 1” Left of the Mass Bias. I threw this piece on a Fresh 43’ House pattern. Out of Box ball motion was clean through the fronts with a half circle shape on the backend. I compared this to Attention Star. Attention Star was similar through the Fronts but has a Sharper motion on the Backend compared to the Gremlin. The Gremlin is a good step-down piece to the Attention Star. This piece will be good for all types of styles. Check Out the Ball motion Video on my Facebook Page: https://www.facebook.com/share/v/16wpRBkFXo/

  • RG Gremlin

    Posted by Keith C on Jul 22nd 2025

    Layout:L 4.25 x 4.25 x 1 OOB surface Polished w/Power Edge Broken Down THS SPI description: Your new favorite pearlized ball has been hatched to help advance your game in ways you didn’t know you needed. Now some will say, “hey, I’ve seen that core shape before” and to those we say, “yes, yes you have.” BUT what we can also say is that you have never seen this MAXED-OUT version of this core shape before known as Rondure™ MaxD. That’s right, our team of mad scientists in the R&D Lab pushed this core shape to its limits by changing the densities of both the block and the slug on bottom to create the highest RG value and highest Differential value this part has ever seen. From its inception, this mild asymmetric shape was created to emulate the motion of a symmetric core shape with a balance hole in it. Fast forward to this newest version, and well, even though previous models were fantastic, this version is without a doubt the longest and most continuous down lane that we have ever seen. But it doesn’t stop there, the mad scientists in the R&D Lab also managed to formulate a brand-new nano-free coverstock material during this development and testing process as well. That’s right, the versatile response (V-R1) cover formulation was created to handle a wide range of oil conditions and oil types. From the fresh, to the transition, to the burn, this cover provides easy push through the front of the lane while consistently responding to friction down lane without getting out of control. My Take: Smoother with a more pronounced bite the a UC2. The new VR1 Pearl cover is stronger yet cleaner than eTrax Pearl. The modified Rondure MaxD core provides a rounder reaction shape compared to my UC2. Definitely a transition piece or high friction THS in league. Being a tweener I'm very confident when switching to the Gremlin from the bigger asyms and symmetrical balls. Clean with a readable reaction is best I can decsribe the Gremlin. Higher revrates and 2 handers will probably have the most fun curving the lanes, but us Tweeners and strokers will have the best control pearl on the market. So visit your local Storm VIP Proshop today. #SquadRG #stormnation

  • Mischief made to strike

    Posted by Trevor Kopas on Jul 22nd 2025

    Pattern: 41ft house shot Layout: 70 x 4 1/2 x 40 Finish: Box (Power Edge) The Roto Grip Gremlin features the Rondure MAXD core which has been modified to its highest RG and differential possible. Complimented with a nano free coverstock in the V-R1, this asymmetrical pearl gives the feel of the old school symmetrical with a weight hole without actually identifying as such. This ball reminds me a lot of the Rubicon UC-2 in its motion, just with a stronger backend due to the updated finishing product, Power Edge. When I used the ball in the practice time before league, it would go a little too long on the fresh, but I decided to take it out for game 3. On the burn, this ball is a BEAST. 300 game first game out of the box. Highly recommend this piece if you are looking for a complimentary pearl for your big asymmetrical balls. This ball has some room for error and responds well on most conditions. Trevor Kopas Pro Shop Operator Storm Staff Ambassador #Bigboybowling

  • Roto Grip Gremlin

    Posted by Kevin Duncan on Jul 20th 2025

    Roto Grip Gremlin Layout: 4.5 x 4.0 x 2.0 Storm Pin Buffer Layout Rev Rate: 325 rpm, 7 degree of axis tilt, 40 degree of axis rotation Testing information: 41 foot THS (medium to light volume) Bowling Center: Fulton Bowling Center IKON Kegel Machine – Brunswick Anvilane The Roto Grip Gremlin utilizes the V-R1 pearl reactive cover along with the Rondure core made famous in the Rubicon series. The Gremlin does not use the A.I. core technology. I am not sure why but it seems to work in the Gremlin. I drilled mine before a trip to Oklahoma City to bowl a SABA at Holiday Lanes. I had a good look with it on the house shot on the wood lanes side. There was too much oil on the synthetic lanes side of the center for the Gremlin. I see the Gremlin as one or two step down from the strongest balls in my arsenal. My tournament arsenal (current) 1. Storm Ion Max 2. Storm Physix Blackout 3. 900 Global Origin 4. Roto Grip Rock Star 5. Storm Equinox or Roto Grip Gremlin 6. Storm iQ Tour A.I 7. Road Warrior 8. Storm iQ 78U Visit your local Storm VIP Pro Shop! #Stormnation #SquadRG

  • Gremlin has hatched!

    Posted by Dave Jecko on Jul 18th 2025

    The Gremlin has hatched and is ready to strike! It features the brand new V-R1 (Versatile-Response 1st Edition) pearl cover and the Rondure MaxD core. The V-R1 cover was created to push through the fronts and provide a consistent reaction to friction on a wide variety of patterns and oil types. The Rondure MaxD core, first seen in the Rubicon series, has been pushed to the limit to generate the longest and most continuous downlane reaction in the HP3 line. The Gremlin gave me a great look sliding on 30, looking 17 at the arrows with my breakpoint around 7-8. I was able to play multiple angles by changing my speed and hand position, but the Gremlin thrived the further left I moved. It also did an excellent job blending out the wet/dry on the high friction house pattern. When compared to the Rockstar, it was several feet cleaner and much sharper off the end of the pattern. I’ve had great success with HP3 balls from Roto Grip in the past and get a UC2 vibe from the Gremlin. If you are in the market for a pearl asymmetric ball that will compliment your strong solid/hybrid asymmetric balls, the Gremlin will be a must in your bag. Stop by your local Storm VIP pro shop to check it out! Available on July 18. Coverstock: V-R1 - Power Edge Core: Rondure MaxD RG: 2.50 Differential: .058 PSA: .010 (15 lbs) Layout: 5.25 x 3.5 x 3.75 PAP: 6" Right, 1 3/8" Up Axis Tilt: 16° Rotation: 51° Rev Rate: 450-500 Speed: 17-18 mph Location: Vista Lanes - Yorkville, NY Pattern: Kegel Carbon Lane Surface: HPL Dave Jecko Storm Amateur Staff Member YouTube Channel: https://www.youtube.com/@maximumpotentialbowlerssho7625

  • Roto Grip Gremlin Review

    Posted by Tobias M on Jul 18th 2025

    The Gremlin is the newest ball in the Roto line and features the V-R1 Pearl Reactive cover, Rondure MaxD Core, and comes with power edge finish. This ball is the first one in a while that does not feature AI technology. When throwing the Gremlin, it reminds me a lot of the UC2, both strength and shape. It is one of those balls that you can get left and throw right without having to worry about it not getting back. This ball has that good old hockey stick shape. This is a bigger asym Typhoon and would be a step down from the attention star and the equinox. For me, this is not going to be a fresh oil ball but when they burn up and you need to wheel the lane. This ball is going to be versatile for many styles and another great release from Roto Grip! Ball review link: https://www.youtube.com/watch?v=LBC-2_sjAgs&t=35s Tobias Myers #RotoGrip #SquadRG

  • Staff Review - Roto Grip Gremlin

    Posted by Ryan Burks on Jul 16th 2025

    ? Staff Review – Roto Grip Gremlin ? Layout: 5 x 4 x 2 | ReactaGloss™ Finish Bowler Specs: 475 revs | 12° tilt | 45° rotation | PAP: 4¾" x 1" up ? The Rundown: The Gremlin might look fun-sized, but don’t be fooled—it’s a serious piece. Built with the new V-R1 Pearl cover and a maxed-out Rondure core, this thing glides through the fronts and hits the corner like a possessed pearl. ⚖️ Ball Comparison (Real Talk): Ball up from a Hyped Pearl Earlier and smoother than TNT Infused Cleaner and flippier than Exotic Gem ? Best Use: When the lanes are transitioning but you still want angle League nights when the fronts go but the backends stay strong Tournament days when symmetric motion isn’t quite enough ? My Take: Super versatile—reads early enough to control the midlane but doesn’t quit downlane. You can move in and trust it to come around without jumping or stalling. Great addition if you need something between your benchmark and your big asym.

  • Gremlin

    Posted by Glenn on Jul 15th 2025

    Ball Specs: Roto Grip Gremlin Cover stock VR-1 Pearl Reactive Rondure™ Maxd Core (Asymmetric) Power Edge Finish Layout 4 x 4 x 1.5” Pin Buffer Bowler Specs: Right Hand. PAP 5” Over 1/2 up Rev Rate 300. Tilt 20. Rotation 50. Speed at release 17 Review: I have been waiting to roll the Gremlin ever since I saw the specs on it. This ball is a beautiful mix of purple colors, and the green logos look great in contrast. The Gremlin was much more predictable at the breakpoint than I expected considering the high RG value. I think this is due to the asymmetric core and the new cover stock. The Gremlin covered more boards than I expected but remained controllable. This ball has a very good price point and has already created a buzz at the shop. I would put this ball above my Hustle M&M, but below my Harsh Reality pearl in total hook. I have used this ball at a couple of bowling centers now and what I’m seeing is, as the shot gets worse the ball gets better. The Gremlin is a ball I think I can keep in my hand for a long period before going to something else. The lighter hits seem to move pins around a bit, which is also fun to watch. I have very good expectations about this ball. Summary: The Gremlin is a very attractive benchmark ball. This ball is forgiving versatile. The Gremlin is a performance ball at a very good price point. Glenn Wendel Sidewinders Pro Shop Storm Pro Shop Staff gwendel@comcast.net www.stormbowling.com

  • The Name Says It All

    Posted by Thomas Szczepaniak on Jul 10th 2025

    The Gremlin’s modified core simply is amazing. I was able to try this ball on the fresh and the burn and it gave me a great look. The ball on the fresh, I was able to play a little further right around 7-8 board at the arrows. The ball definitely started picking up a touch sooner than I expected but the lanes this summer have been playing with a bit more friction than last summer. Now I was able to jump back on the same lanes at the end of the night after the league and I was blown away with the versatility of this ball. My first handful of shots I was rolling the ball around 15 at the arrows out to about 5 and the ball just ripped off the spot and continued through the pins. Moving a little more left I tried to throw around 20 at the arrows to keep it a little tighter and a handful of shots I missed in gave me some good mix strikes. But the ones that seemed to get to the 12-14 board area on the lane came back high flush.