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Hammer

Hammer Purple Pearl Urethane 78D Bowling Ball

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  • Hammer Purple Pearl Urethane 78D Bowling Ball
  • Hammer Purple Pearl Urethane 78D Bowling Ball
  • Hammer Purple Pearl Urethane 78D Bowling Ball
  • Hammer Purple Pearl Urethane 78D Bowling Ball
MSRP: $209.95
$149.95
— You save $60.00
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Description

Hammer Purple Pearl Urethane 78D Bowling Ball

  • Color: Purple Pearl
  • Coverstock: Urethane Pearl 78D
  • Weight Block: Super LED
  • Factory Finish: 500 Siaair Micro Pad
  • Flare Potential: Low
  • Radius of Gyration (RG): 16lbs - 2.583; 15lbs - 2.632; 14lbs - 2.634
  • Differential (Diff): 16lbs - 0.034; 15lbs - 0.034; 14lbs - 0.034
  • Intermediate Differential (Diff): N/A
  • Fragrance: N/A

Additional product information:

They’ve done everything they can to hold Hammer urethane back. Rule changes. Restrictions. Limits. None of it stopped us. It only made us push harder. While governing bodies around the world may not be ready for what’s next, competitive bowlers are.

Introducing the Purple Pearl Urethane 78D. Built around the all-new Super LED core, this design more than doubles the differential and flare potential while maintaining Hammer’s proven thick-shell technology. The result is a reaction closer than ever to the infamous Purple Pearl Urethane—now delivered in a harder 78D formulation.

Consider it back. As good as ever. Just less restricted by rules and red tape.

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Additional Information

Lane Condition:
Light Oil
Factory Finish:
Sanded 500 Siaair
Core Type:
Symmetrical
Coverstock:
Urethane Pearl
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1 Review

  • 5

    Hammer Purple 78D

    Posted by Chris Monroy on Apr 16th 2026

    Here's my take on the new Hammer Purple Hammer 78D. The new Purple has a Super LED symmetric core (modified LED core found in the original Purple to increase track flare) wrapped by a purple pearl 78D urethane cover. Box finish is 500 Siaair. For comparison purposes, I drilled a 78D with the same layout as one of my original Purples, 40 x 3 3/4 x 10. I also put a fresh 500 Siaair on the original Purple. I tried it on mostly fresh THS. From what I see, notwithstanding the increased track flare, there is a difference in motion. I had to be a little further right and on top of the dry to get the 78D to shape properly. A careful eye can see that the 78D picks up a little differently than an original Purple. It also seems like the 78D is a bit more forward off the spot so I used a slight hand position adjustment to get the ball to shape properly. In the end, the Purple 78D will be a useful tool in the bag. As I found it easier to "curve" an original Purple (to be expected given the different cover), I believe that straighter more direct angles through the front will help the 78D to be at its best. This new 78D Purple will be at its best on fresh patterns where a slow response ball to get control of the pattern is required. The Purple Hammer 78D is readily available. See your local pro shop for more information.

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