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:Katana Assault
Reviewed:January 2023
Coverstock Specs
Name:HK22 - HyperKinetic
Type:Reactive Pearl
Box Finish:500 / 1000 / 1500 SiaAir / Crown Factory Compound
Color:Smoke / Black / Blue
Core Specs
Name:Katana Assault Asymmetric
Int. Diff:0.020

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

The Katana nameplate returns to the Radical lineup with the release of the Katana Assault. This ball features a core shape with a slightly lower RG than previous Katanas and uses Brunswick’s new HK22 base formula in its pearlized coverstock. This new cover comes out of the box finished with 500/1000/1500 SiaAir and Crown Factory Compound, providing easy length and plenty of movement downlane. All three of our bowlers found this ball most useful on our medium oil test pattern and across the other patterns when they wanted to open their angles and go around the lane more.

Stroker really liked the strong downlane motion from the Katana Assault on the fresh medium oil pattern. Its glossy box finish allowed him to stay straighter up the lane on the fresh, while the angular motion at the breakpoint brought the ball back strongly through the pins. He didn’t see much transition while using this ball, but when it did eventually start hooking high, he made a small two board move left with his laydown to open up his launch angle through the front of the lane. This change in trajectory got the ball farther right at the breakpoint, and the strong downlane motion got the ball back to the pocket shot after shot. After he made this move in transition, he threw the Innovator to compare its reaction and found that it was flatter at the pins from the same place as the Katana Assault. Stroker easily had the best reaction of all three bowlers on the dry test pattern. His lower rev rate kept the ball from jerking sideways at the end of the pattern, giving him plenty of power and control that the other testers didn’t see on the fresh. His reaction got even better as the session went on. Whether following reactive or urethane equipment, the Katana Assault continued to give him a strong back end motion, and the transition only added

Radical Katana Assault Comparisons

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Additional Radical Katana Assault Resources

Click here to visit Radical'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.