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:Quantum Bias Pearl
Reviewed:March 2019
Coverstock Specs
Name:ECA-XR Pearl
Type:Reactive Pearl
Box Finish:500 SiaAir / Crown Factory Compound
Core Specs
Name:Quantum Mushroom High RG Asymmetric
Int. Diff:0.013

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

The Quantum Bias Pearl is the second recent asymmetrical entry into the Quantum line for Brunswick. It uses the same Quantum Mushroom High RG Asymmetric core design as the white Quantum Bias. This ball features the new ECA-XR Pearl coverstock, finished with 500 SiaAir and Crown Factory Compound. These elements allow the Bias Pearl to have more skid through the front part of the lane and a stronger change of direction off the dry than the white Quantum Bias. All three of our testers liked their reactions on the fresh across most of our test patterns. The box finish offered enough traction through the oil, but not so much that it caused this ball to lose energy on the back end.

Our medium oil test pattern offered the best reaction on the fresh. Stroker fell in love with the Bias Pearl on this pattern. He was lined up starting this ball on 12 off his hand, crossing the second arrow, and getting it out to eight at the breakpoint. The Bias Pearl was incredibly forgiving for him when playing this part of the lane. When he got this ball off his hand properly, he could throw it anywhere downlane between six and 10 at the breakpoint and still hit flush in the pocket. The box finish kept it from hooking early when he got it to the dry too quickly, while also not pushing too far down the lane on shots

Brunswick Quantum Bias Pearl Comparisons

Click below to see a comparison table of each pair of bowling balls shown:

To compare the Brunswick Quantum Bias Pearl to any other bowling ball(s), please use our Bowling Ball Comparison tool.

Additional Brunswick Quantum Bias Pearl Resources

Click here to visit Brunswick'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.