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 subscribers.

General Info

Coverstock Specs
Name:GTR III
Type:Reactive Pearl
Box Finish:800 Abranet / 1000 / 2000 Abralon / Powerhouse Factory Finish Polish
Color:Blue / Orange
Empty
Core Specs
Name:NA
Type:Symmetrical
RG:2.56
Diff:0.054
Int. Diff:0.000

Everything on the Spike is new for Hammer. Even though the GTR3 cover has been used before, the Spike offers it in a pearlized version and it surrounds a brand new high RG, high differential core shape. This combination of elements produces a ball that wastes zero energy getting to the breakpoint.

A ball with this type of reaction was best for us on our medium test pattern. We liked it there just a tad bit more than on our dry pattern. All three players saw the Spike clear the front with no effort, then make a big turn when ...

Hammer Spike Comparisons

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

To compare the Hammer Spike 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.