They tried everything to slow Hammer urethane down—rule adjustments, equipment limits, and tighter restrictions. But none of it stopped the drive to innovate. If anything, it pushed us to work even harder. While some governing bodies may still be cautious about what comes next, competitive bowlers are more than ready.
Meet the Purple Pearl Urethane 78D. Powered by the new Super LED core, this ball dramatically increases differential and flare potential—more than doubling what came before—while still using Hammer’s trusted thick-shell urethane construction. The result is a motion that closely mirrors the legendary Purple Pearl Urethane, now produced in a harder 78D formulation.
Think of it as a return to form—every bit as effective as the original, just designed to navigate today’s rules with fewer limitations.
Here's what Hammer has to say about the Purple Pearl Urethane 78D:
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.
