win a ball from

Author Topic: Tour Dynam-X  (Read 3970 times)


  • Administrator
  • Hero Member
  • *****
  • Posts: 886
Tour Dynam-X
« on: August 30, 2023, 12:48:45 PM »
From the very beginning, Roto Grip's aim was clear for the Tour Dynam-X: to design and produce a cutting-edge bowling ball that revolutionizes performance with a fresh and focused approach. Responding to the requests of top-level tour players and skilled bowlers worldwide, they set out to create a ball that offers exceptional control, unwavering continuation, and minimal deviation, enabling them to conquer even the most challenging and reactive lane conditions. Roto Grip heeded their feedback and embarked on an intensive journey to develop the ultimate "TOUR PLAYER" ball. After numerous trials and a learning process filled with valuable mistakes, they successfully engineered a bowling ball that delivers optimal control and seamless continuation for every bowler, regardless of their rev rate. Their approach began by lowering the RG (Radius of Gyration) to initiate early core motion. This crucial adjustment resulted in the ball staying on its intended path for an extended period, reducing the typical directional change associated with high-performance balls. As if that weren't impressive enough, they also incorporated a mild asymmetry aspect into the design. This addition further enhances the ball's ability to maintain its trajectory while generating enhanced power as it drives through the pin deck, all while minimizing overall deflection. In summary, Roto Grip's relentless pursuit of excellence led them to create a game-changing bowling ball that fulfills the demands of tour-level players and skilled bowlers around the world. Its unrivaled control, seamless continuation, and extended precision on the lane make it the ultimate choice for those seeking an unparalleled bowling experience.

Color: Dark Cyan / Onyx
All colors do vary somewhat from the picture shown
Core: Rondure Tour (14-16#)
Coverstock: TourTrax Solid Reactive
Hook Potential: High
Finish: 2000-grit Abralon
RG: 2.47 (for 15# ball)
Differential: 0.026 (for 15# ball)
Recommended Lane Condition: Medium Oil



  • Hero Member
  • *****
  • Posts: 866
Re: Tour Dynam-X
« Reply #16 on: November 15, 2023, 02:47:56 PM »

My Specs:
PAP: 4 7/8R 7/8up
Revs: 350 MPH: 15 at pins
Layout: VLS 3 3/4 x 4 x 3 5/8 Pin Down

The Roto Grip Tour Dynam-X is a bowling ball that delivers control, stability, and versatility on tough and demanding lane conditions. It features the new Rondure Tour core, which has a very low total differential and a mild intermediate differential, creating a smooth and stable motion from start to finish. The coverstock is the new Tour Trax Solid Reactive, which has a rough 2000 Abralon finish that helps the ball pick up early and provide a controlled arc at the breakpoint. The Tour Dynam-X is ideal for bowlers who need a ball that can handle over-reacting or shorter patterns, as well as for those who prefer a rounder shape down lane. The ball can also be adjusted with different surface preparations or layouts to suit different styles and preferences. The Tour Dynam-X is a must-have for serious or semi-serious bowlers who want to compete at the highest levels of the sport.

For my Tweener style I can describe the TD as an asymmetrical Hyped Solid. Not my first ball option in league, more of a third gamer on a THS due to my lower rev rate and speed. and not wanting to get steep with my angles.

Great ball to keep in front of you when you need that control at the breakpoint or when you a readable shape. No lack in confidence when it comes to execution and continuation at the pin deck.

Definitely a ball to have in your arsenal for the semi-serious and serious local THS tournaments and shorter sport patterns bowler.

Keith Cordy
900 Global Staff Ambassador

  • Jr. Member
  • **
  • Posts: 21
Roto Grip Tour Dynam-X review by Ethan Fiore
« Reply #17 on: November 15, 2023, 07:22:00 PM »
Lane Condition
Length: 40
Volume: Medium
Type (THS, Sport Pattern etc): THS

The Tour Dynam-X is our new solution for urethane! The Tour Dynam-X has our Rondure Core that was in the Rubicon Series, and the Tourtrax Cover. I see this ball being useful with a lot of friction. It has an early and controllable shape which you will see in a lot of urethane balls. But the low differential, this gets you as close as possible to that exact shape.

Social Media
Click This Link Below For All Social Media :

Coolwick Customizable Jerseys
Save 10% on your order by using code Efiore10

Bowler Stats
Ethan Fiore
⭐PBA Member⭐Roto Grip Staff⭐CoolWick Staff⭐Tournament Director⭐
Right 2 Handed
Rev Rate: 500
Speed: 17.5
PAP: 4 1/8 up 7/8


  • Hero Member
  • *****
  • Posts: 1071
Roto Grip Tour Dynam-X
« Reply #18 on: November 15, 2023, 10:15:01 PM »
Newest addition to the Roto Grip HP3 line is the Tour Dynam-X.  The Tour has  a strong solid coverstock with a low rg (2.47)and low diff core (0.26).  This is a unique combination.  We really haven't had that combo in a ball from SPI. So hats off to the design team! I drilled mine with a pin up 4 inch pin. I have used the Tour on a bunch of patterns, very versatile.  Its kind of cover strong like the IQ Tour solid. Ive been able to play inside 4th arrow and played up the lane around 1st arrow with the Tour.  The cover  responds with all kind of surface adjustments, whether it is with Abralon pads or step 2.
The downlane reaction is probably a little on the slow response side, but the Tour for me carries real well. The Tour is kind of between an asymmetrical and a symmetrical ball.  Even though the Tour is an asymmetrical ball, but with the lower diff it fits in between.  Great ball to have in your bowling ball arsenal.

Brian Watson
PAP  - 3 7/8 up 1 1/4
RPM  - 400
TILT  - 17
MPH  - 16-17

Storm Pro Shop Staff

  • Jr. Member
  • **
  • Posts: 35
Re: Tour Dynam-X
« Reply #19 on: November 29, 2023, 12:59:35 PM »
Tour Dynam-x
It says it all in the name... Tour. This ball exceeds on tougher conditions like the pros see on tour, but don't get me wrong this bad boy also works wonders on a house shot. With is smooth, predictable, and very controlled motion you get an asymmetric shape with the continuation through the pins like a symmetrical core would.

-Joshua Tajiri
Tajiri's Ball Reviews The Best Deals in Bowling
Joshua Tajiri (Technician)