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:No Rules Pearl
Reviewed:January 2017
Coverstock Specs
Type:Reactive Pearl
Box Finish:1500 Grit Polished
Color:Onyx / Neon Green / Silver
Core Specs
Int. Diff:0.018

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

The No Rules Pearl joins the original No Rules as the second ball in Roto Grip’s current HP4 line. It features the pearlized Amped cover that was used previously on the HP3 line’s Dare Devil. The Chaotic asymmetrical weight block is unchanged from the original No Rules. The use of this stronger weight block gave us more total hook than the Dare Devil, while the polished coverstock gave this ball more length than the sanded solid cover of the No Rules.

On our medium pattern, all three testers started farther left with this ball than they have with any previous pearl in the Roto Grip line. Stroker and Tweener started two boards left with their feet than they did with the Eternal Cell. The Amped cover had no trouble being thrown in the heaviest part of this pattern and it gave these testers plenty of downlane motion. Cranker started with his feet near the left gutter. The 1500 grit polished box finish gave him enough length

Additional Roto Grip No Rules Pearl 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.