Bowler Ratings

PatternStTwCr
Oily:X.XX.XX.X
Medium:X.XX.XX.X
Dry:X.XX.XX.X
Sport:X.XX.XX.X

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

Brand:
Name:Shadow Tank
Reviewed:November 2025
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Coverstock Specs
Name:Frixion M7 Pearl MCP
Type:Microcell Polymer
Box Finish:1000 Grit LSS
Color:Purple / Black Pearl
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Core Specs
Name:Flux Symmetric
Type:Symmetrical
RG:2.57
Diff:0.015
Int. Diff:0.000

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

The Shadow Tank is the next evolution in Motiv’s Tank series. This ball uses the Flux Symmetric weight block that has been used in previous balls like the Purple Tank, Desert Tank, and Tank Yellowjacket. This design was also used in the reactive resin-shelled Thrill from 2019. This is a very high RG (2.57″) and low differential (0.015″) weight block that keeps the flare potential low. The new Frixion M7 Pearl MCP (Microcell Polymer) coverstock gives the Shadow Tank a hardness of at least 78D, allowing it to be used at most major competitions in light of the USBC’s most recent rules changes surrounding low-absorption coverstocks. This new cover comes out of the box at a very dull 1000 grit LSS finish, getting it started very quickly. All three of our testers saw an extremely early start to the hook phase and a very controllable motion downlane. The Shadow Tank was at its best when it had some friction on the lane, and all three bowlers had their best looks on our dry test pattern.

Cranker

Cranker liked how smooth and rolly the Shadow Tank was for him on the dry test pattern. This is typically his least favorite pattern, but the Shadow Tank let him strike early and often. The ball grabbed the lane very quickly and really blended out the motion at the end of the pattern that is usually so hard for him to control. He had a smooth motion that didn’t over-hook when it saw the dry. He wasn’t able to be as aggressive as he wanted with his release when the pattern was fresh, because being too aggressive would cause the ball to hook even earlier and then not bail enough at the back end to hold its line to the pocket. His adjustments on this

Motiv Shadow Tank Comparisons

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

To compare the Motiv Shadow Tank to any other bowling ball(s), please use our Bowling Ball Comparison tool.

Additional Motiv Shadow Tank Resources

Click here to visit Motiv'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

Bowling This Month's ball testing team is led by Eric Martinez. Our team of three testers has reviewed well over 1,000 bowling balls for Bowling This Month. In addition to leading BTM's ball testing efforts, Eric owns and operates University Pro Shop in San Antonio, TX, and he is an avid competitive bowler. Learn more about our bowling ball testing and review process here.