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

Coverstock Specs
Type:Reactive Solid
Box Finish:500 / 1500 SiaAir
Color:Black Solid
Core Specs
Int. Diff:0.018

The Radical Guru combines the newest super-cover for Radical with a new version of the Scoop core design. This core has a lower RG, more differential, and more intermediate differential than their last high performance ball, the Reax Gusto. This new coverstock comes out of the box at a 1500 SiaAir finish, giving it plenty of hook on even the slickest of patterns.

The Guru offered remarkable traction on our heavy test pattern, making it nearly impossible for any of our testers to miss the breakpoint. Stroker and Tweener loved the amount of motion they were getting on this pattern from the Guru. Cranker liked his reaction also, but the sanded cover started up

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.