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

Reviewed:November 2017
Coverstock Specs
Type:Reactive Pearl
Box Finish:500 / 1000 SiaAir / Crown Factory Compound
Color:Black / Charcoal Pearl
Core Specs
Name:Katana Asymmetric
Int. Diff:0.020

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

The Katana will provide Radical fans with the biggest downlane recovery in the history of the brand. This ball uses both a new coverstock and a new asymmetrical core design to achieve its gigantic change of direction at the breakpoint. Also, for the first time for Radical, the coverstock on the Katana has been given a name. The Forged coverstock is a strong pearlized composition that comes out of the box with a 500/1000 SiaAir combination before Crown Factory Compound is applied. The Katana’s new asymmetrical weight block offers a large amount of track flare, which helps it slice through the back of the lane with ease.

Our medium oil test pattern provided the best reaction for the Katana at its box finish. Stroker and Tweener loved the motion this ball provided them at the back of the lane. Their lower rev rates usually don’t allow balls to turn over as sharply at the end of the pattern as the Katana. Stroker felt like a power player the way the pins fell when the Katana was in his hand. The sharp angle it created was throwing pins everywhere, even with his lower rev rate. It was just as

Additional Radical Katana 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.