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:December 2015
Coverstock Specs
Name:ECS (Enhanced Composite Segmentation)
Type:Reactive Solid
Box Finish:500 / 1500 SiaAir
Color:Red / Blue / Violet Solid
Core Specs
Name:Nirvana Ultra Low RG Asymmetrical
Int. Diff:0.013

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

Brunswick recently introduced the Nirvana as the only non-Mastermind ball in their high performance Hook line of bowling balls. This releases uses a new coverstock called ECS, which stands for Enhanced Composite Segmentation. This very aggressive cover is a new formulation for Brunswick that comes out of the box at a sanded 1500 SiaAir finish. The Nirvana also uses a new core shape. The Nirvana Ultra Low RG Asymmetrical core revs up quickly and, paired with the rough aggressive cover, make this ball a monster on heavy volumes of oil.

The Nirvana’s combination of strong cover and strong core allowed us to have our best reaction on our heavy oil test pattern. Tweener and Stroker loved this ball on this condition. Their speeds and rotations matched up masterfully with the Nirvana with this amount of oil. They liked that they could stay aggressive with their ball speeds, which is usually something that isn’t possible for them on this pattern. It was difficult for them to

Additional Brunswick Nirvana 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.