Ball NPS Score: Not Available
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The Hammer Special Effect is the ultimate evolution of the iconic Effect, one of Hammer’s most successful high-performance balls in years. Featuring the powerful Huntsman core from the original Effect, this ball takes performance to the next level with the HK22-Cohesion Solid coverstock—one of the most dynamic covers in bowling. Finished with factory compound, the Special Effect delivers outstanding mid-lane motion and a bold, aggressive backend reaction. Compared to its predecessor, it offers the same effortless length but reads the lane slightly earlier, making it a game-changer when extra hook is needed on oily conditions. Built for versatility, the Special Effect is a must-have for bowlers looking for a strong, consistent reaction across various oil patterns.

Details & Specs

Color
Purple/Red/Grape/Black
All colors do vary somewhat from the picture shown
Core
Huntsman (14-16#)
Coverstock
HK22 - Cohesion Solid Reactive
A few tiny pit holes in the cover stock of the ball are normal
Reaction
Strong mid-lane and backend
Finish
500, 1000, 1500 Siaair/Factory Compound
Hook Potential
High
Length
Middle
RG
2.470 (15# ball)
Differential
0.050 (15# ball)
Mass Bias Diff
0.017 (15#)
Recommended Lane Condition
Medium to heavy oil