Roto Grip

Roto Grip Duo Bowling Ball

(14 reviews) Write a Review
  • Roto Grip Duo Bowling Ball
  • Roto Grip Duo Bowling Ball
  • Roto Grip Duo Bowling Ball
MSRP: $219.95
— You save $55.00


Roto Grip Duo Bowling Ball

  • Color: Black/Electric Green
  • Coverstock: MicroTrax Pearl Reactive
  • Weight Block: Mentor Core
  • Factory Finish: Reacta Gloss
  • Flare Potential: Medium-High
  • Radius of Gyration (RG): 16lbs - 2.47; 15lbs - 2.49; 14lbs - 2.53
  • Differential (Diff): 16lbs - 0.047; 15lbs - 0.046; 14lbs - 0.047
  • Intermediate Differential (Diff): N/A
  • Fragrance: N/A

Roto Grip Duo Bowling Ball Features:

Dynamic looks – CHECK!… Dynamic motion – CHECK!… The optimum balance of core strength and cover strength to create the most formidable DUO in the history of mankind – CHECK!… Approachable yet progressive, this performance powerhouse will not only assist you in your desire to be better, but it will also leave a long-lasting impression on everyone who comes in contact with it. So don’t just sit there and admire from afar, make a difference in your game and in the lives of others, visit your local VIP Pro Shop and add one to your bag today.

Dynamic power to the core, the symmetrical Mentor™ Core was built to produce plenty of positive motion. From its mushroom/bulb shape structure to the heavy density flip puck on bottom, (to give it extra giddy up) this part was constructed to deliver added forgiveness in the back part of the midlane and down lane where you need and want it most. To be perfectly honest, this latest addition to the HP3 family of cores was erected and developed from the inspiration of the Madcap™ Core numbers (DareDevil™ Series) from yesteryear. It’s ok, you can thank them later.

This coverstock technology is a banger regarding performance in the pearlized category . Featuring a 100% nanoparticle load dispersed evenly throughout, this pearlized concoction provides traction and response to friction while maintaining its surface profile over a longer period of time to ensure you get maximum performance each and every time. For the record, the pearl version of MicroTrax displaces oil at the highest rate of any of the pearl covers RG offers today. Basically, as their token of appreciation and thanks to you, they gift you added forgiveness on those not-so-great shots off your hand.


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Additional Information

Lane Condition:
Factory Finish:
Reacta Gloss
Core Type:
Pearl Reactive
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14 Reviews

  • 5
    Duo Supporting BBBS

    Posted by Michael Slatky on May 29th 2023

    Roto Grip Duo Coverstock: Micro Trax Pearl Reactive Finish: Reacta Gloss Core: Mentor Core (14 pd) RG: 2.53 Differential: 0.047 Layout: 5.5 x 4 x 4 - 2LS Layout Extras: 2 1/8 Finger Depth, "X" - 4 1/2 D and 1 Inch Left Tester: PAP 6 1/2 R, 1 1/4 D Review: The Duo reunites with the daredevil series from awhile back. The goal of the Duo is to provide a controlled reaction in a pearl coverstock. Previously, some pearls have created to much "hockey stick" reaction which can place a bowler at a disadvantageous position when balling down. The Duo quite nicely provides some forgiveness in the RG line. For a pearl offering, the Duo provides a decent amount of length and smoother backend. I personally chose a 2LS layout of 5.5 x 4 x 4 to gain a touch more length and slightly more backend. The layout we chose on the Duo tested out nicely. For me, the Duo oob pearl surface was perfectly fine. However, I tend to always lightly touch pearls with a 4K or 3K pad. Although not always needed, it is a personal preference of mine. The Duo felt comfortable and had great control off the spot and shots have been repeatable. In comparison, the Cosmos is earlier and a tad smoother downlane. The Duo fits nicely if you need a touch more pop when the Cosmos starts getting a bit early as transition occurs. Having the Duo can be a great asset to be in a pearl that allows you to keep angles in front of you and control at the breakpoint. However, I do need to note my Cosmos is 15pd and my Duo is 14pd, so the numbers are a bit different when evaluating both balls. Also, don't forget when you purchase your Duo you are supporting Big Brothers and Big Sisters as well. Please be sure to visit your favorite pro shop today or for more information. Michael Slatky 900 Global Staff Member York, PA

  • 4
    Duo Review

    Posted by Glenn Wendel on May 28th 2023

    Ball Specs: Roto grip Duo Coverstock Micro Trax Pearl Reactive Symetric Mentor Core Finish Reacta Gloss 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: This new Roto Grip Duo is SMOOTH! I had been hearing about the controllable motion of this ball but was unsure how much it would hook so we drilled one up and went to find out. The Duo borrows a mushroom shape type core from the popular Dare Devil Series constructed to deliver added forgiveness in the back part of the lane. The Duo also reads the mid lane well and not too early which is nice. This ball is a step down from the Exotic Gem in total hook. I would put this ball in the medium category in total hook and shape. The Duo carried light hits with power for a smooth back end type ball. I would say this would be a great ball when the Exotic is too strong or you need control on the back end of the lane. I will be drilling my second one up and add some surface to see how it rolls on higher volume. My guess is this would be a great plan for sport shot patterns. I feel higher rev rates will love the Duo. As an added boost Storm will also be donating 5% of our sales to domestic distributors to aid in the development and support of children within the program. You can buy a great ball and give back at the same time. Summary: The Duo has a very nice smooth motion. The Color is different and looks great. Portions of the sales will help Big Brothers and Big Sisters! Glenn Wendel PBA Member Storm Pro Shop Staff Video Link:

  • 5

    Posted by Oliver Lawson on May 26th 2023

    The Duo is a a collaboration between Roto Grip, Big Brothers Big Sisters, and the Shafani Duo. The all new Mentor Core (named after those who are Big Brothers/Sisters) is wrapped in MicroTrax Pearl coverstock that has been featured as recent on the Exotic Gem. I drilled by Duo 4.75x4x4 2LS to help me get a consistent roll off the spot and see a strong smooth reaction. I have this same layout on my Fate and my Phase V, and I see 3 very different shapes of ball reaction. The Duo is considerably more forward off the spot and reads the midlane the earliest out of the three. The Fate is the strongest and has a much more continuous backend motion. The Phaze V goes easily 3-4ft more down lane before it starts to pick up and drive towards the pocket. The Duo is going to be filling the same spot in the bag as my Zen as it is quite possibly even more controllable. The Duo wants to pick up in the midlane a touch sooner than my Zen has in the past and is stronger on the backend. If you need something that is as good looking on the lane as it is off the lane, then the Duo is right for you. I will not often say that everyone needs a certain ball in their bag, but the Duo might just make that case for me. Visit your Local Storm VIP Proshop today to make a difference on and off the lanes with the Roto Grip Duo.

  • 5
    The Winning Duo!

    Posted by Rick Klimowicz on May 26th 2023

    Duo • Roto Grip •HP3 Core • Mentor Core (Symmetrical) Coverstock • MicroTrax Pearl Reactive • Finish Reacta Gloss Weight • 15 lbs. RG • 2.49 Differential • .046 Layout •4 x 4 x 2 ¼ Tester PAP • 5” R, 5/8” D Tester Axis Tilt • 11° Testers Rev Rate • 300 Test Pattern • 42' THS (Typical House Shot) • Modified, Kegel Stone Street Are they helping the next generation? Roto Grip is doing precisely that with their release of the Duo. Partnered with Big Brothers and Big Sisters, your Duo purchase will not only be helping the next generation, but your Duo will also bring a smile back to your A game! You will love it, especially if you are a down-and-in player like me! So, let's take a closer look at what makes the Duo worth the purchase! The Mentor Core is at the heart of the Duo's success. I like how the Mentor Core's symmetrical "mushroom" look produces a smooth and robust rev'ing motion later in the mid-lane versus rev'ing too early upfront, causing it to lose all its gusto down the lane. And if you're a straighter player like me, you will love the results of the puck block added to the bottom of the Mentor Core. The puck block helps the Mentor Core stand up later as it makes its turn off the pattern. And because it doesn't overreact when it finds friction, the Mentor Core creates a dependable margin of error the Duo can recover from while still maintaining a strong continuation through the pins. So, if you're a down-and-in player who likes to play right of the second arrow, then the Mentor Core was made for your game! The MicroTrax Pearl Reactive Coverstock gives the Duo an excellent appeal. However, I am a proponent of the correct surface to match the bowler. So, I tweaked the surface of my Duo to 1000-Grit Abralon and followed that up with Storm Step # 2 compound for my straighter, rev-challenged hand. And this surface combination brought my A game to a fun and high-scoring bowling night. I liked how the MicroTrax Pearl had strong traction in the mid-lane but still allowed the Duo to retain a lot of energy off the pattern. And as the night went on, I liked how the MicroTrax Pearl smoothly blended the over/under conditions that developed throughout the night without losing its crisp turn-off pattern. And lastly, the MicroTrax Pearl allowed me to stay in my comfort zone all night as it gave me the confidence to play right of everyone else! In conclusion, Roto Grip has produced a winning release with the Duo. The Duo is a predictable and consistent powerhouse for my straighter and more classic game. So, I highly recommend the Duo to any down-and-in, low-rev bowler looking to boost their game. And what better way to improve your game than by helping the Big Brother, Big Sister Organization make a difference to our next generation with the purchase of your Roto Grip Duo! So, stop into your local Storm VIP Pro Shop today and see how everybody wins with the purchase of Roto Grip Duo! Rick Klimowicz Storm Products Pro Shop Staff Roll the Ball Pro Shop Penndel, PA

  • 5
    Zen 2.0?

    Posted by Steven Collins on May 23rd 2023

    Dual Angle Layout: 55 x 4 ½ x 25 Pin Buffer Layout: 4 ½ x 4 ½ x 1 5/8 Dare I say this is the Zen 2.0? I put the same layout on the Duo as I did my original Zen and if it was not for the awesome color scheme I would not be able to tell the difference. This ball is clean through the heads, picks up nicely in the mid lane, and really pops off the end of the pattern. Plus 5% goes to the Big Brother Big Sisters, I’ll take a 2nd one for sure.

  • 5
    Roto Grip DUO Review

    Posted by Tobias Myers on May 20th 2023

    The Roto Grip DUO features the MicroTrax Pearl Reactive cover, Mentor Core, and comes with the reacta gloss finish. The DUO features the same cover that is on the Exotic Gem. This ball feels like a symmetrical Exotic Gem to me. It shapes very similar but just a bit weaker from the core. I threw the Exotic Gem as a comparison and it was a bit earlier and harder off the spot for me. I also compared it to the Zen and the Zen picked up a touch earlier but was smoother/rounder off the spot. The DUO, for me, is forward off the spot and when it sees friction, it goes left. I think when you need something when the Exotic is picking up too early the DUO will be a good ball down. This ball is another great release from Roto Grip! Tobias Myers #RotoGrip

  • 5
    Roto grip DUO

    Posted by Adonas Taylor on May 15th 2023

    Ball review: DUO Layout: 50x4 1/2x30 PAP: 4 1/4> 1/8^ Today we have the new DUO from Roto Grip. The latest entry into the HP3 line. Roto Grip had partnered with Big Brother/Big Sister with the release of this ball by donating 5% of sales to aid in the development and support in the BB/BS program. This is a great opportunity for you to make a difference in bowling and outside of bowling with the same purchase. The DUO has the new Mentor core wrapped with the Microtrax Pearl coverstock, previously on the Exotic Gem. This is a good Step down from the Exotic Gem. I have compared the DUO to my Storm IQ Tour Ruby which I laid out the same way and the Ruby was much cleaner through the fronts where the Duo was more midlane roll. Both these balls is a stable in my bag and a good 1-2 combo for medium lane conditions The Roto Grip DUO is available at your local VIP Storm proshop World Class Pro Shop on May 19th. Be sure to pick yours up!! Come see me #WORLDCLASSPROSHOP #stormnation #SquadRG #WAWG #DUO #RFA

  • 5

    Posted by Storm Andrew on May 15th 2023

    We have a new ball plugging the gap in our arsenals with the new Duo from Roto Grip. This ball is a perfect benchmark pearl for those medium to heavier oil conditions. A step up from both the Zen and IQ Ruby yet a step down from our Exotic Gem. Out of the box I found the cover to be clean through the fronts and smooth off the backend. When I hit it with 2000 the ball picked up much sooner conspicuously yet it angled a lot better than when I had it out of the box. When the higher end asyms or solid syms become too much the Duo will be a great ball to jump into. We have not seen a ball like this since the Idol pearl and Axiom pearl. The shape that the Duo provides is extremely user friendly and will provide tons of margin on today's conditions. The ball is very forgiving and should match up to many bowling styles. I believe this ball will be very adaptable to different lane conditions from sport to house.

  • 5
    Roto Grip Duo

    Posted by Matt Fazzone on May 14th 2023

    Roto Grip’s most iconic line has another new piece coming to it. The Roto Grip Duo features the brand new Mentor Core that yields an RG of 2.49 and differential of 0.046 and is wrapped around the ultra popular microtrax pearl cover. I drilled mine 5.5 x 5 x 5 which is also the same layout as my Exotic Gem. After throwing my Duo for awhile, I was quite impressed on the strength and shape this ball gave me. It was like a little clean benchmark type motion or a better comparison would be a baby Exotic Gem. I can see a lot of people using this as a multi purpose ball. They could either use it on the fresh as a benchmark ball or something as the lanes start to transition. Also Storm is donating 5% of all sales of the Duo to the Big Brother, Big Sister Foundation!

  • 5
    Roto Grip Duo – WWRD 5/19/23

    Posted by Patrick Dombrowski on May 13th 2023

    Cover: Micro Trax Pearl Reactive Core: Mentor Symmetric RG: 2.49 RG. Diff.: 0.05+ Finish: Reacta Gloss Roto Grip’s new Duo is a Pearl Symmetrical piece that is good for Medium Oil conditions. 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 with the CG kicked out 2” from the palm. Out of Box ball motion started a little early in the mids with a smooth backend reaction. I changed the Surface to 3000 Abralon and was a similar motion through the fronts with a little more on the backend. I compared this piece to the Roto Grip Idol Cosmos and Storm Fate. Idol Cosmos was a few weaker than the Duo. The Storm Fate is 2-2 Stronger than the Duo. Fate has a cleaner shape through the front with a sharper backend. This piece will be in my bag cause of the versatility it will bring on tournament patterns. Plus, 5% of all sales will be supporting the Big Brothers and Big Sisters of America. Check Out the Ball motion Video on my YouTube Page:

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