Roto Grip Tour Dynam-X Bowling Ball

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From day one, the end goal was to develop and create a high-performance ball from a completely different dynamic performance-focused perspective. Tour level players and above average bowlers from around the globe have always asked for a ball that produces control and continuation with minimal direction change in order to battle those tougher and more demanding and over reacting conditions. They spoke, we listened! So, we went to work to formulate and create the ultimate “TOUR PLAYER” ball. And truth be told, after months and months of trials and errors, we were finally able to construct the optimum control and continuation for every style of bowler no matter their rev rate. Control, stability, and versatility unified into one dynamic ball that is a must for every single serious or semi-serious bowler.

When a symmetrical core shape just isn’t enough or quite right, and a big asymmetrical core shape is just flat out too much, the answer is simple – the Mild-Asymmetric Rondure Tour Core. Why is this version considered a “Tour” model you ask? We thought you would never ask. From the original version of this shape previously introduced and used in the Rubicon™ Series, we changed the core values significantly to create a faster revving version that stays on-line easier and longer with less change of direction due to the Differential value being cut in half. So, no matter how you throw this ball, whether you have a super high rev rate or a super low rev rate, or a rev rate somewhere in the middle, this Low RG, Low Differential, Mild Asymmetric Differential core produces a constant stable motion off your hand and all the way through the pin deck.

Color Dark Cyan / Onyx
Coverstock TourTrax Solid Reactive
Core Rondure Tour Asymmetric Core
RG 2.47
Differential 0.026
Intermediate Diff 0.010
Factory finish 2000 Grit Abralon
Weights 12 thru 16lbs

24 Reviews

  • The ball everyone’s missing!

    Posted by Andrew on Sep 19th 2023

    The all new Tour Dynam-X is highly anticipated for every competitive bowler. It uses the Rondure Core wrapped around with Tour Trax solid which gives outstanding versatility and control. Unfortunately, I don’t think this is the urethane replacement most people were hoping it to be but don’t let that deter you away. My first impression it hooks much more than expected. It digs a good amount in the mid lane with a smooth but strong continuation. I compared to to my Reality and it’s been a great ball down choice once the Reality starts to burn up or when I need to play straighter. The Tour Dynam-x will always be in my bag whether it’s house shots or sport patterns I think that’s what makes it so good. I will say be careful will layouts and don’t go too crazy because i have my standard pin up on mine and when I start to get around the ball the track moves close to my thumb and fingers. Andrew Smith Storm staff LH Rev rate 420+ Speed 16.5

  • Tour DynamX Review by Kyle, Joel, & Dean Johnson

    Posted by Kyle, Joel, & Dean Johnson on Sep 17th 2023

    Roto Grip Tour DynamX Cover: 2000-grit TourTrax™ Solid Reactive Weight Block: Rondure™ Tour Core (Asymmetrical) Color: Dark Cyan/Onyx Review: This is a great release from Roto Grip. The technical data has benchmark sport and house pattern ball written all over it. We drilled this ball with our normal layout: tweener, 350-375 revs, 16.5mph, layout of choice is 4x4x2 (pin is above bridge). This ball is the lowest Diff and RG every created by Roto and for that reason really stands out not only in SPI but the entire bowling ball market. Pair that with the modified core seen in the Rubicon series and the TourTrax cover and you have a guaranteed winner. Comparing this ball to IQ Tour you will find it a touch later and more shape down lane, obviously created by the asymmetry of the core. On a fresh house pattern you will want to tighten up your line a bit but this in turn will still allow for some miss room. For all of these reasons this ball will fit into just about anyone’s bag whether you are a tournament player or just a fall & winter league bowler. Kyle, Joel, & Dean Johnson Roto Grip Pro Shop Staff Members #SquadRG

  • Tour Dynam-X: A MUST for your tournament arsenal!

    Posted by Todd Sigeti on Sep 4th 2023

    Layout: 4 x 3.5 x 5.25 The Tour Dynam-X fills a spot in the SPI lineup that has been missing for a long time--probably not since the Zero Gravity has there been an asymmetric lower-to-mid-differential ball. Featuring the Tour Trax Solid Reactive cover and a modified version of the Rondure Core that was seen in the successful Rubicon series. The RG remains low (2.47 at 15 pounds), but the differential has been halved (.026--even lower than the IQ Tour), giving you the ultimate non-urethane control piece for your tournament arsenal. Compared to the IQ Tour (one of which I have drilled basically with the same layout), the Tour Dynam-X has a heavier roll in the mid-lane due to the earlier combination of the coverstock as well as the asymmetric core, with less of a radical change in direction in the back part of the lane. When the backend is crispier and more cliffed front-to-back, the Tour Dynam-x will make it easier to tame the last 20 feet of the lane and reduce the "surprising" through-the-face shots, especially on the fresh. This is absolutely not just a replacement for the IQ Tour, it is a fantastic complement. If you have these two pieces in your bag, you are really set for a lot of very difficult conditions. In pro shops today! Todd Sigeti Storm Amateur Staff

  • Tour Dynamix!

    Posted by Oliver Lawson on Aug 31st 2023

    The Tour Dynamix from Roto Grip is a brand new concept with the modified rondure core. It has a significantly lower differential and RG compared the the original core, which helps provide less flare and less overall hook. Wrapped in the new Tour-Trax solid coverstock, the Tour Dynamix gives a much more forgivable ball motion than other balls in the line-up. Compared to the IQ Tour, the TD creates more shape down lane and is not as early. The IQ Tour is a little bit rounder and earlier. I drilled both the TD and IQ Tour 3.75x4x4 2LS and both of these give me a very controllable motion down lane. The TD helps blend some of the over/under we see on house conditions and clipped sport patterns.

  • Your Dynam-X

    Posted by Jeff Shadbolt on Aug 30th 2023

    15 Mph 340 RPM PAP 4 7/16> 5/8^ Right Handed Ave 220-230 Visit the YouTube channel for reviews! Tour Dynam-X 4 3/8x4 7/8x2 RG 2.47 DIFF .026 INT DIFF .010 The Tour Dynam-X is an interesting one. A super low diff @ .026, this ball is extremely controllable down lane and basically looks like a symmetrical solid. The slight asymmetry is something we’ve seen a little of before but this ball takes it to another level. This will be the first ball out of the bag for a lot of players. It will allow the higher rev rates to control the lane and the lower rev rates/low speed to get just enough traction to be in play a lot. This should be a consideration for almost everyone’s bag.

  • Roto Grip Tour Dynam-X Review

    Posted by Joey Ocello on Aug 28th 2023

    The new Roto Grip Tour Dynam-X is a fast favorite of mine. Featuring the Tour Trax Solid cove and the Rondure core, it gives the ball the perfect blend of control and versatility. Going with 50 x 4 x 40 for the layout, it helped me play on almost any pattern and have multiple different lines to choose from. The Tour is simply a assym IQ Tour from what I have seen. I have had the same versatility with this as I would with the typical benchmark piece in the SPI line. Was able to throw this ball in league a few times before I went back to school and have shot no less than 710 and have had two 300’s and a 791 with it already. Also used this ball from pattern lengths of 36ft to 48ft and have had success. No matter the situation, I feel that I am always in control with this ball and never stuck in one spot. I compared it to a stronger assym in the SPI line, the reality. It was clear how much stronger the reality was throughout the lane and that the Tour had more shape overall and area. The times where the reality burned up, the Tour Dynam-X would make it back no problem. They both compliment each other well in a tournament setting and looking forward to using it more this collegiate season. This ball is the real deal, get yours today and you can view the ball video with the link attached below! #StormNation -Joey Ocello, Storm Amateur Staff Member. Bowler stats: Avg: 230+, Rev Rate: 450, Tilt: 17, PAP: 4 x 2 up, Axis

  • Behind the Tour Dynam-X- success!

    Posted by Rick Klimowicz on Aug 27th 2023

    Tour Dynam-X • Roto Grip • HP3 Series Core • Rondure Tour Core (Asymmetric) Coverstock •Tour Trax Solid Reactive Finish • 2000 Grit-Abralon Weight • 15 lbs. RG • 2.47 Differential • .026 Intermediate Diff• .010 Layout • 4 ¼ x 4 ¼ x 2 ¼ Tester PAP • 5” R, 5/8” D Tester Axis Tilt • 11° Tester Rev Rate • 300 Test Pattern • 42' THS (Typical House Shot) • Modified, Kegel Stone Street Roto Grip scores another success with the release of the Tour Dynam-X. With the new, finely tuned version of the Rondure Core called the Rondure Tour Core, combined with the new TourTrax Solid Reactive Coverstock, the Tour Dynam-X is a fantastic new ball found in the Roto Grip HP3 line. So, let's look at what makes the Tour Dynam-X so good. Roto Grip has taken its proven Rondure Core initially found in the Rubicon series and changed the core values to produce a faster, more stable, revving version. And without a doubt, Roto Grip hit the mark with their intended changes to the new Rondure Tour Core design. Being a straighter player, I liked how the Rondure Tour core revved briskly in the mid-lane and maintained a consistent motion off the pattern without losing the strong continuation we straighter players depend on. I found the Rondure Tour core to be smooth, predictable, and extremely stable. And with that type of consistency, I had plenty of confidence rolling my Tour Dynam-X shot after shot all night in league play. The TourTrax Solid cover is ideal for straighter and lower-rev players like me. And what I loved most about the TourTrax cover is its ability to blend the lane conditions all night long effortlessly. Whether playing straight up the second arrow or moving my line in and opening my angles, I enjoyed the comfort and stability the TourTrax cover provided, especially late at night when the pattern breaks down. And you can count on the TourTrax solid to keep you in your A game with its ability to smoothly transition its way through those dreaded wet/dry and spotty conditions that tend to take us out of our comfort zone. So, straighter and rev-challenged players like me will enjoy the confidence the TourTrax solid gives your chances of striking all night in league competition. In closing, I found the Tour Dynam-X to be an excellent new release by Roto Grip. And the Dynam-X lives up to everything Roto Grip set out to do with its design. The Tour Dynam-X is a smooth, predictable, dependable ball that belongs in any straighter player's arsenal to keep you scoring all night in THS league conditions. So stop into your local Storm VIP Pro Shop today and have your Roto Grip Tour Dynam-X ready for the first night of league. Winning awaits you! Rick Klimowicz Storm Products Pro Shop Staff Roll the Ball Pro Shop Penndel, PA

  • Tour Dynam-X

    Posted by Michael Slatky on Aug 24th 2023

    Roto Grip Tour Dynam-X Coverstock: TourTrax Solid Reactive Finish: 2000 Grit Abralon Core: Rondure Core (14 pd) RG: 2.52 Differential: 0.026 Int Diff: 0.016 Layout: 5 x 4 x 4 2LS Tester: PAP 6 1/2 R, 1 1/4 D Review: The Tour Dynam-X features TourTrax coverstock which provides versatility in coverstock technology. The Rondure Core is being used to add control and smoothness for a ball in the HP3 line. The ball intent is to create a ball motion not readily seen in the SPI line of bowling balls. In comparison to my Roto Grip UC-3 and TNT the Tour Dynam-X will have much more utility in my arsenal. My UC-3 is a bit strong for a urethane type option and my TNT is a bit specific where it comes into play. The Tour Dynam-X on 40' Don Johnson showed a nice balance of length and control. The TNT in this case was good length wise, but off the spot over and under and the UC-3 had me steeper then I desired. For me, I really desire an option for sport and league patterns where control is the key, yet I want to move away from urethane do to the earlier chacteristics of these balls during events where a lot of traffic may happen. I feel the Tour Dynam-X might be that option over balls like the UC-3 and TNT for reasons I noted above. The cover comes out at 2K from the factory so I'm debating if 3K might give it just a touch more length out of my bag once urethane is not a good option. Anything you desire in a ball to create earlier hook and control the Tour Dynam-X is what you are looking for. These type of balls are needed and advantageous in today's bowling environment. They are also tough when looking for the right combination of length and hook strength. I'm very excited about this particular ball being an asymmetric and initial use has shown the ball has nice predictable continuation in the hook phase. This is not what you generally see in most asym pieces. Be sure to grab a Dynam-X today. It might just be the surprise of the season. Michael Slatky 900 Global Staff Member York, PA

  • Tour DynamX by Casey Murphy

    Posted by Casey Murphy on Aug 22nd 2023

    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 1: 5 x 4 x 2 ½ (pin above bridge) Layout 2: 4 ½ x 4 x 4 1/8 (pin below bridge) The Tour DynamX is like an IQ Tour with a weight hole. It’s low RG, Low Diff, Lower Int Mid Diff! And a cleaner cover! I’ve been waiting for this ball a long time! It keeps its axis better than any asym we’ve made in a long time. Things I love about the DynamX 1. I can literally throw it as slow as I want and it won’t burn up or hook too early in the front 2. If I bump the dry it rarely goes sideways. It hooks off the dry but it’s more of a gradual continuous arc. 3. It lets me play parts of the lane I can’t play with any other ball because it’s clean, hits the midlane and doesn’t overhook down lane! Already one of my favorites and I can’t wait for the pearl!

  • Roto Grip Tour Dynam-X – WWRD 8/18/23

    Posted by Patrick Dombrowski (Storm Staff) on Aug 22nd 2023

    Cover: TourTrax Solid Reactive Core: Rondure Tour Core RG: 2.47 RG. Diff.: 0.026 Finish: 2000 Abralon Roto Grip’s new Tour Dynam-X is a Solid Asymmetrical Low-Medium Flare piece that is good for Medium-Heavy Oil conditions. PAP is 5 5/16 R 1 3/16 Up. Rev Rate: 400. Speed: 16.5. Drilled this piece with the Pin above the bridge, CG kicked out a 1”, and Mass Bias 1” to the right of the Thumb. I threw this piece on a fresh 41’ house pattern. Out of Box ball motion was clean through the fronts started early in the mids with a smooth continuous backend reaction. I compared this piece to the Storm IQ Tour, 900 Global Reality and Xponent, and Storm Phaze II. IQ Tour (Symmetric) was 4-4 right with an overall smooth motion. Reality (Asym) was 2-2 right but with a smooth continuous back motion. Xponent (Symmetric) 2-2 right with an overall smooth motion. Phaze II (Symmetric) was similar shape but stronger on the backend. This piece will be good for all types of styles. Check Out the Ball motion Video on my YouTube Page:

  • Roto Grip Tour Dynamix

    Posted by Patrick Keiffer on Aug 21st 2023

    The Tour Dynamix has a low RG value of 2.47 a low differential of 0.026 and a medium intermediate differential of 0.010. Rot Grip came out with a brand-new Tour Trax Cover wrapped around a modified Rondure Tour Core. The differential / intermediate differential has been lowered on the core as compared to what was used in the Rubicon to create a faster revving version that stays on-line easier and longer with less change of direction due to the Differential value being cut in half. Whether you have a super high rev rate or a super low rev rate, or a rev rate somewhere in the middle, this Low RG, Low Differential, Mild Asymmetric Differential core produces a constant stable motion off your hand and all the way through the pin deck. In comparison to the 900 Global Xponent, the Xponent is the poster child for a benchmark ball fits right in the middle of a Summit and a Tour Dynamix. The Xponent will very smooth, continuous and very predictable. The Tour Dynamix is an IQ tour on steroids and will give you that drive up the hill that is not seen in an IQ tour until later in you 3 game set for league or later in an 8-game block on tour. In the bag, will be the Summit, Xponent, Tour Dynamix and Storm Hyroad Pearl

  • Control Redefined

    Posted by Chase Valenzuela on Aug 21st 2023

    The Tour Dynam-x is a shape that is essential to any bowler's bag. Initially, I thought the Tour Dynam-x would out-hook the IQ Tour Solid. Interestingly, I found that they picked up in almost the same spot, but the Tour Dynam-x got a little more forward off the end of the pattern, allowing me a little more control of the breakpoint. It's notable that the TD provides more control than the IQ Tour, seeing as how the IQ Tour has been the standard of control and predictability as long as it has been on the market (and that's been awhile). The TD also has the unique ability to get across the lane with slower speed and still maintain its axis/hitting power. The TD rolls like an IQ Tour but softens the breakpoint up a bit more and hits more like a big ball. What's not to love?

  • Roto Grip Tour Dynam-X

    Posted by Matt Fazzone on Aug 19th 2023

    Any SPI line ball with the word “Tour” in it has to be a huge success right? The new Tour Dynam-X is going to be no different. This ball features the Rondure Tour Core which is a spin off of the Rondure Core that was found in the Rubicons. This ball also has a new TourTrax Solid cover. I drilled mine to serve a different purpose in my bag, the 6 x 6 x 2 layout. I wanted something that was weaker drilled on the resin side but still was kind of quick when it saw the friction. After I first threw this ball I was completely shocked that it was still very strong and never really quit on me. I think anyone who bowls tournaments must have this in the bag because it’s going to be a great ball for the fresh because of how smooth it is.

  • League Night Ball

    Posted by Steven Collins on Aug 19th 2023

    Dual Angle Layout: 60 x 4 1/2 x 30 Storm Vector Layout: 4 ½ x 4 7/8 x 1 7/8 My first impression is this will be the first ball out of my bag on league night. Strong mid lane reaction with plenty of continuous motion to kick the corner pins. There wasn’t a spot on the lane that I did not feel comfortable throwing this ball. Might need to hit the surface just a bit, maybe 3000 if you don’t bowl on a shot with plenty of oil but I think as this ball lane shines up it will just get better and better.

  • Roto Grip Tour DynamX review by Lonnie Pemberton

    Posted by Lonnie Pemberton on Aug 18th 2023

    Core: Rondure Tour Core Cover: TOURTRAX™ Finish: 2000-Grit Abralon® RG: 2.47 (15 lbs) Diff: 0.026 (15 lbs) PSA: 0.010 ME: Right-Handed Tweener Speed: 12-13 mph Rev Rate: 315 Axis Tilt: 14° Axis Rotation: 74° PAP: 5 1/8 R 7/8 Up Ball Layout: Pin over Ring 4 3/4 X 4 1/2 X 2 1/2 VLS Roto Grip has added a Tour piece to the HP3 Line. By modifying the Rondure core that was featured in the Rubicon series and pairing it with the new Tourtrax cover, they've created a ball unique to the brand, and to the market. The mild asymmetry of the Rondure Tour core creates a motion dynamic that is unique even from other Tour balls like the !Q Tour series. I tested the Tour DynamX on the house pattern in my home center. We have a longer, heavier house pattern but very cliffed. I found the Tour DynamX most useful when I got very close to the friction, but still loaded up on the ball a bit. It was very Urethane-esque, where it wanted to read early and layoff down-lane. This pattern is not where I would choose to throw a ball like that normally because of how tight they are down-lane. However the higher ratio of this pattern made so that I could jam the ball into the friction early enough and create angle and actually took a little of the over-under away. I also threw the Tour DynamX in another house I was visiting for a league sweeper. This house has very quick back-ends, and I tend to struggle there because of my lower ball speed This was where I really saw the unique advantage that the Tour DynamX can provide. Where I might use urethane on a similar condition, it often makes the lanes really tricky as they transition, with most modern urethanes flaring enough to pick up in the front of lane oil, but really causing it to push into the back-end. The result being a constant need to manipulate the shape as the lanes transition and even trickier; finding the correct ball to move into when the lanes transition. The Tour DynamX gives you all of the benefit of urethane type motion without the biggest drawback. The ball going down this part of the lane with a reactive cover actually makes the lanes better for the equipment you transition to. I would recommend the Tour DynamX for everyone's tournament bag. It's also an incredibly useful piece in houses with quicker back-ends and for very rev-dominant bowlers. It takes well to hand position changes which also sets it apart from urethane as you can stay in it longer without losing carry. See my full ball reaction video at: Lonnie Pemberton Storm Pro Shop Staff Vise Pro Shop Staff Revolutions Pro Shop

  • This ball is DYNAM-ic !

    Posted by Roto Grip Rick on Aug 15th 2023

    Roto Grip Tour Dynam-X: Rondure Core w/ TourTrax solid reactive cover. Layout: 60 x 5 x 35 with 2000 grit Abralon out of the box. The ultimate sport pattern ball has been unleased onto the bowling world. If you liked your iQ Tour, you will LOVE the Tour Dynam-X. After debuting the ball at Bowl Expo – the buzz started right there, and the buzz has not died down at all. This is the lowest RG and DIFF ball that Roto Grip ever made! So, when I received mine, I instantly had it drilled with a very proven layout I used years ago when I rolled the ball better, and with recent changes in my health and game, I thought it would be best to see if I could re-create that magic from 4 years ago. The TD-X, my new nickname for this ball, worked amazing well on 43ft and 39ft sport patterns that were fresh and then after it was beat up by league bowlers and practice, I hoped back on the lanes and saw the same pin carry and sharpness in the backend when entering the pocket with just small adjustments on the starting point of the approaches and small adjustments getting the ball between the 2 tracer boards down lane. On a fresh medium to heavy house pattern, I was able to stand 18-20 and put the TD-X right up between the tracer boards and was striking like crazy. Was able to get left even more as the pattern conditioner pushed up between the tracer boards and moved to the dry part of the pattern, the TD-X did not hook up early which like solid reactive would normally do, like my Hyped Solid, Zen Master, and Electrify Solid, and held its own and I gain a ton more confidence the more I rolled the TD-X. For bowlers that are looking to update or replace their main piece in their bag, or if you want to add to your current arsenal to bowl on some tougher patterns, the Tour Dynam-X is the ball for you. Visit, and check out the latest balls from 900 Global, Roto Grip and Storm bowling balls, bags, accessories, and gear.

  • Tour Dynam-x

    Posted by Ben Lapointe on Aug 14th 2023

    Ben Lapointe PAP - 1 1/4'' up, 4 7/8 over Layout - 5.25 x 4.25 x 3 The Tour Dynam-x is Roto Grip's next installment in their HP3 line. This piece, like the Rubicon is unique because it is an asymmetric ball in a lower line. This ball for me, is the definition to a beefed up IQ Tour Solid. While it is a tad stronger overall, it shows that same controllable motion off during the entirety of it's path. It is a true middle of the bag ball that will keep you in the zone on most patterns, and tends to be the first ball out of the bag. I could see this ball being very versatile and is definitely recommended for the majority of bowlers, because it is a ball reaction almost no one could pass up. Get yours August 18th and Bowl Up a Storm!!!

  • IQ but asym

    Posted by Evan Pitt on Aug 13th 2023

    to keep things short, this ball is a motion SPI has been missing for a while. Best way to describe this is IQ Tour but asym. Way predictable, way smooth. Talk about a ball that gives you miss room and makes you feel confident the second it touches your hand. Personally, sleeper ball of the SPI line.

  • Tour Dynam-X!

    Posted by Josh Shoemaker on Aug 13th 2023

    The Tour Dynam-X features a modified version of the Rubicon core and is wrapped in Tour Trax solid. The Dynam-X core is low RG, low differential and mildly asymmetric. The cover is a slightly modified version of what you would find on the Hustle line. These combine well together to give you a ball that produces a similar amount of overall traction to an !Q Tour but allows for infinite more drilling options. This is especially helpful for the no thumb players when choosing a layout. Be sure to get into your local Storm VIP Pro Shop and pre order your own for the 08/18/23 release! Review Video:

  • Tour Dynam-X

    Posted by Will on Aug 11th 2023

    Ball Specs: Tour Dynam – X Cover: Tour Trax Solid Reactive Cover stock. Core: Mild-Asymmetrical Rondure Tour Core Finish: 2000 grit finish Color: Dark cyan/onyx Review: The ball may be designed for the “Tour Player” but I can assure you this ball creates versatility for all levels of bowlers. If you are a fan of the Rubicon series, you are really going to enjoy throwing this ball. The same core that was first introduced in the Rubicon series is back and is now modified to create a different shape that many tournament bowlers have been looking for. When I first threw this ball I got the initial thought of this being an IQ Tour if it was symmetric. This is one of those bowling balls that will quickly become a staple in all bowlers’ bags. If you are looking for that asymmetric roll without wanting to break the bank the Tour Dynam-X is a great option. Make sure you pick yours up! Will Tefft Roto Grip Pro Shop Staff Member #SquadRG

  • Tour Dynam-X

    Posted by Stanley Waite on Aug 7th 2023

    Tour Dynam-X - Ball Specs Cover Stock: Tour Trax Solid Reactive Finish: 2000 Grit Abralon Color: Dark Cyan/Onyx Core: Rondure Tour Core RG: 2.47 Differential: 0.026 Intermediate Diff: 0.010 Review The Roto Grip finally has a tour ball and it is a must for all serious players. For me the Tour Dynam-X is about controlling the tough medium to light oil patterns and the new Tour Trax Solid reactive cover will give you the versatility and playability needed to conquer those types of lane conditions. The Rondure core which was introduced in the Rubicon series has been modified for the tour version with the differential cut basically in half so regardless of your style this Rondure Core version will produce a constant stable motion at the point of release through the pines. I tested this ball on a 40 feet typical house pattern. As a medium to low rev player, I was able to play in the track area and down and in up the five board. This ball stands up in the midlane with a strong finish on the backend. The Tour Dynam-X is a must have for tournament bowlers. Now available for preorder at your local pro shop! My ball reviews are posted on YouTube channel Stanley Waite. Stanley Waite 900 Global Staff Member Dover, DE

  • Tour Dynam-x

    Posted by Adam Chase on Aug 7th 2023

    Layout: 4.5 x 3.5 x 3 Surface: 1000 Grit Abralon The new Roto Grip Tour Dynam-x brings a brand new core and coverstock combination that is a completely new ball reaction in the Roto Grip Lineup! This is the IQ Tour for Roto Grip but potentially better?! A modified version of the Rondure Core was brought in here with half the differential as the original for a stronger front of lane move. What's also great about this ball is its control and predictability. It reminds me of a urethane ball that is all resin. This ball is going to be great for harder conditions or where control is an absolute must. For the normal typical house pattern, this ball would be best on the fresh for lanes that tend to hook a little more than typical or for the down and in player. This ball definitely favors straighter angles over opening up the lane. If you are a player looking to find a ball to be up the lane with or looking for your next sport pattern ball, than look no further. I was able to test this ball on the Kegel Alcatraz Oil pattern which is 38ft in length with a 2:1 ratio. What I found on this ball was with my ball speed, the 2000 abralon factory surface was just a little too clean for the pattern I was bowling on. It gave me a little too much length and not enough down lane reaction. When I altered the surface to 1000 abralon, I got a much stronger footprint on the lane and it gave me more of the ball reaction I was expecting out of it. It is a ball definitely designed for the fresh as it doesn't flare a lot. At the 1000 abralon surface, I was able to throw the ball a little bit more left to right but due to its controllable nature, it didn't go through the pins as strong as I wanted. I would say this ball would be more ideal for medium to shorter oil patterns and where control is needed. All tournament bowlers should have this ball in their bag as a staple benchmark ball where urethane is too early and smooth and stronger resin balls are too much hook. This will fall right in between those two types of balls. Don't be afraid to add more surface to this ball to get a stronger overall shape. Adam Chase Storm Staff

  • Roto Grip Tour Dynam-X

    Posted by Alex Thomes on Aug 6th 2023

    Ball Specs: Roto Grip TOUR DYNAM-X Coverstock: TourTrax™ Solid Reactive Weight Block: Rondure™ Tour Core Color Dark Cyan / Onyx Finish 2000 Abralon Layout 50x4 3/8x35 or 4 3/8x4 1/4x2 1/4 Bowler Specs: Right Hand. PAP 3 9/16 Over 7/8 up Rev Rate 400 Speed at release 17.5 Review: The Tour Dynam-X is the new ball in the HP3 line and is a nice addition to the line. This ball features the TourTrax Solid cover and the Rondure Tour Core. This core and cover combo is going to give you a controllable shape and a round reaction. The TourTrax cover is a cover that gets through the fronts but provides a read in the mids to help handle medium patterns and house shots. The Rondure Tour core is a modified Rondure core, but they lowered the diff but kept the asymmetry in the ball and provides a rounder shape compared to the old Rondure core. This ball is going to be similar to an IQ tour shape but will go through the pins better because of the asymmetry. This ball will fit into a benchmark position in your bag but also can be a ball for when the lanes start to break down with less surface or shined. If you were a fan of IQ tours with balance holes this is going to be a great replacement. Get yours 8/18 at your local Storm VIP pro shop. Video Review Here: Alex Thomes #StormNation #StrikingWorldwide #SquadRG #Driven2Bowl

  • Review

    Posted by Storm Andrew on Aug 5th 2023

    Ball Review (Dynamo X & Clone): The Tour Dynam-X will be a staple in the bag for some time to come. In this review I bowled on a very light THS that had some recreational play on it prior to me bowling. I drilled 2 Dynam-X balls as I was a big fan of the Rubicon which features a modified core in the Dynam-X. With the high friction/early hook conditions I encountered the pin down provided the best look of the 2 as it blended out the pattern real well. As you will see in the video with the pin up I begin to loft the ball a bit to get the ball to clear the fronts and provide energy down lane. I believe the Tour Dynam-X will be a great benchmark ball to throw on medium to higher volume and will be good with surface adjustments. I saw real good continuation with the pin down as that ball matched up the best, provided plenty of margin and great hitting power through the pins. With the Clone given the strength of this asym and the environment I was bowling on it was way too strong for those conditions. I winded up moving right from the Dynam-X and increased my ball speed to get it through the fronts and provide angle down lane. You will see on the first few shots when I play left to right it read too early and didn't provide enough shape down lane. Once I got right and increased speed the ball looked real good. This will be good for medium to heavier conditions and could be used either on the fresh or as a transition ball off the stronger solids.