Bowler Ratings


Bowler ratings are from 1 to 10 in order of Stroker (ST), Tweener (TW), Cranker (CR)

General Info

Name:Zero Gravity
Reviewed:May 2014
Coverstock Specs
Name:ERG Solid Reactive
Type:Reactive Solid
Box Finish:4000 Grit Pad
Color:Purple / Red
Core Specs
Name:Shape-Lock LD
Int. Diff:0.010

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

The Storm Zero Gravity is the latest release in the Premier line for Storm. This ball utilizes a new coverstock formulation that is a solid version of the ERG coverstock that was used in pearl form on the Lucid and Byte. This new cover surrounds Storm’s new Shape-Lock LD weight block. This core takes the basic shape of the Shape Lock core in the Virtual Gravity line, but with a much lower differential (LD).

This ball’s lower differential reduces the flare and it was best for us on the medium test pattern. Cranker liked this ball best on this pattern and for good reason. He was able to hit the ball as hard as he wanted at the bottom of the swing without it hooking too much or going sideways at the breakpoint. Even as the pattern broke down, he was not forced left enough to have to loft the left gutter to keep the ball in the pocket. Tweener and Stroker were not far behind on their reactions. They attacked this pattern from farther right and were able to keep the ball on line to the pocket. Once the balls started leaving the flat 10, they added a coat of Xtra Shine to all three test balls. The polish allowed all to store more energy and kick out the corner.

Moving to the heavy test pattern, Cranker again had the best reaction. The box finish created just enough friction to get to the pocket. Tweener and Stroker had to go more direct on this pattern as well as make sure they kept their speed down. We roughed up their two test balls with a fresh 2000 Abralon pad. With the rougher surface, both testers were able to get to the pocket more easily, but they lost some of the angle downlane.

The sport pattern was a good one for our testers. We really like balls that give us a predictable motion at the breakpoint on this flatter condition. This ball fits that bill perfectly. Bowlers who see heavier volume sport patterns than we use will want to lower the surface on their Zero Gravity to allow for more traction.

Performance Ratings

The Zero Gravity is pretty smooth for a Storm product. When balls like the Byte are too angular at the breakpoint, switch to the Zero Gravity.
The 4000 Abralon finish accomplishes two things for the Zero Gravity. It allows the ball to bite through some oil and the sanded finish smooths out the back end reaction.
Back End15.5
The back end reaction is less than most other balls with the Gravity name. The new Shape Lock LD core’s lower density and corresponding lower flare potential is what reduces the back end movement.
Total Hook52
The total hook on the Zero Gravity is less than the Marvel-S, but more than the Byte. Higher speeds or lower rev rates will have more success on medium patterns.


A lot of times, bowlers are restricted to using high performance balls solely on heavy volume patterns. The Zero Gravity is versatile enough to use on most medium patterns as well.


Bowlers looking for a ball to cut through oil on really high volume patterns will need to drill this ball very aggressively. Adding more surface will also help on these patterns.

Overall Summary

The Zero Gravity takes very well to surface changes. Higher finishes will allow this ball to store more energy than it does at the box finish.

Storm Zero Gravity Comparisons

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

To compare the Storm Zero Gravity to any other bowling ball(s), please use our Bowling Ball Comparison tool.

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.