Bowler Ratings


Bowler ratings are from 1 to 10 in order of Stroker (ST), Tweener (TW), Cranker (CR)

Note: Ratings are only available to our premium members.

General Info

Name:Tour Dynam-X
Reviewed:September 2023
Coverstock Specs
Name:Tour Trax Solid Reactive
Type:Reactive Solid
Box Finish:2000 Abralon
Color:Dark Cyan / Onyx
Core Specs
Name:Rondure Tour
Int. Diff:0.010

For details on our standard test layouts, please click here.

The Tour Dynam-X is one of two new releases for Roto Grip, along with the Clone. These two bowling balls are vastly different in ball reaction, making them a complementary one-two combo for the new season. The Tour Dynam-X uses a new version of the Rondure core design that was previously featured in the Rubicon line. The Rondure Tour weight block has a very low total differential of 0.026″, which is even lower than the balls from the Hyped and Hustle lines. This new core is paired with the new Tour Trax Solid Reactive coverstock with a very rough 2000 Abralon box finish. The result is a ball that picks up very quickly and is very smooth at the breakpoint and back end. Its lower hook potential matched up better for us on our test patterns that are shorter in distance, which allowed the rounder motion downlane to have enough time to get back to the pocket.

Stroker loved the motion he had on the dry pattern with the Tour Dynam-X. It allowed him to play straight up the eight board, using the rough cover to pick up in the midlane and provide a very controlled arc when it came out of the pattern. He was able to stand farther left than he could with his Rubicon UC3, and increasing his speed and adding a little loft to his delivery got the ball through the front later in the session. Between the adjustments to his delivery parameters and the ball starting to glaze up with lane shine, he didn’t need to change the surface or move left and open his angles as the oil transitioned. The sport pattern is where Stroker saw his next best reaction with the Tour Dynam-X. Its smooth downlane motion made it very easy

Additional Roto Grip Tour Dynam-X Resources

Click here to visit Roto Grip's website to read the manufacturer-supplied information on this ball. Also, see below for the manufacturer-produced promotional video for this ball.

Please remember that our reviews are solely based on our own testing and that you may sometimes find differences between our comments and ratings and the manufacturer's claims. Links to these manufacturer resources are provided here strictly for convenience purposes.

The BTM Ball Testing Team

About The BTM Ball Testing Team

The BTM Ball Testing Team is led by Eric Martinez. Our team of three testers has thrown and reviewed hundreds of bowling balls for Bowling This Month. When not testing balls for BTM, Eric owns and operates University Pro Shop in San Antonio, TX and he is an avid competitive bowler. Click here to learn more about how we test and review bowling balls.