General Info
Brand: | Hammer |
Name: | Maximum Effect |
Reviewed: | September 2025 |
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Coverstock Specs | |
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Name: | HK22 - Cohesion Hybrid CFI |
Type: | Reactive Hybrid |
Box Finish: | 500 / 1500 SiaAir |
Color: | Black / Lime / Silver / Purple |
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Core Specs | |
Name: | Huntsman |
Type: | Asymmetrical |
RG: | 2.470 |
Diff: | 0.050 |
Int. Diff: | 0.017 |
For details on our standard test layouts, please click here.
The Hammer Maximum Effect uses the same asymmetrical Huntsman core design that was previously found in the Effect and Special Effect. This low RG (2.470″), medium-high differential (0.050″), and high intermediate differential (0.017″) design revs up quickly and provides plenty of flare potential. The Maximum Effect combines a very aggressive coverstock with this weight block. The HK22 – Cohesion Hybrid CFI cover comes out of the box at a rough 500/1500 SiaAir finish. This aggressive cover and dull box finish create tons of traction, while the large-flaring core allows fresh surface to see the lane as it makes its way to the pocket. We saw tons of total hook from this ball, and it required all three of our bowlers to start farther left than usual. The more oil that was on the lane, the better the reaction was for the Maximum Effect for all three of our testers.
Stroker
Stroker threw his first shot with the Maximum Effect on the heavy oil pattern and almost missed the headpin to the left. The ball picked up quickly and still made a big move downlane. He ended up farther left with his laydown point than he was with both the 3-D Offset Assault and the Pure Envy. He needed to make sure to swing the ball, and as long as he did, he couldn’t miss on this pattern. Where other balls sometimes left the flat 10 from losing energy and standing up in front of the pocket, the Maximum Effect provided continuation through the pin deck. As the oil transitioned, he was able to keep moving left with his laydown point and use the friction in the track area that he created earlier in the session to get the ball back to the pocket. Even being out of his comfort zone and
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Hammer Maximum Effect Comparisons
Click below to see a comparison table of each pair of bowling balls shown:
- Hammer Maximum Effect vs. Hammer Anger Solid
- Hammer Maximum Effect vs. Hammer Black Widow Mania
- Hammer Maximum Effect vs. Hammer Bubblegum Vibe
- Hammer Maximum Effect vs. Hammer Effect
- Hammer Maximum Effect vs. Hammer Effect Tour
- Hammer Maximum Effect vs. Hammer Hammerhead
- Hammer Maximum Effect vs. Hammer Hazmat Pearl
- Hammer Maximum Effect vs. Hammer Special Effect
To compare the Hammer Maximum Effect to any other bowling ball(s), please use our Bowling Ball Comparison tool.
Additional Hammer Maximum Effect Resources
Click here to visit Hammer'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.