Hammer Purple Hammer 78D Urethane Review
The Hammer Purple Hammer 78D Urethane reads early and hooks sooner for maximum control on sport patterns and dry-medium oil. See ratings & video.
They tried to cage it. They rewrote the rules, [music] tightened the specs, added restrictions, all to slow down one name, Hammer. But you can't muzzle a legend. You rebuild it. Introducing the Purple Pearl Urethane [music] 78D from Hammer Bowling. This isn't a nostalgia piece. It's a re-calibrated weapon built around the all-new super LED core. This engine more than doubles the differential and
flare potential compared to traditional urethane designs while still carrying Hammer's proven thick shell technology. The result, a motion that echoes the attitudes of the original Purple Pearl, now [music] forged in a harder 78D formulation that keeps it competition ready in today's game. Same control, same unmistakable roll. Built to run within the lines without losing the bite you've grown to love. The Super LED core is engineered with matched performance numbers across the 14, 15, and 16 lb
options. Each weight features its own dedicated core design so the reaction stays true no matter which weight you throw in that range. Dial it in once, [music] trust it every time. And make no mistake, this ball isn't sitting on a shelf. It's going straight into the hands of our tour staff. From the biggest stages in the sport to your local grind, Hammer Urethane isn't backing down. It never has. Nothing hits like a hammer, and this one hits with a purpose.
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Performance Analysis
Performance Analysis
The Purple Hammer 78D Urethane brings Hammer’s solid urethane formula to the 78D platform. Where the Purple Pearl Urethane 78D pushes longer and makes a smoother arc on the backend, the solid version reads the midlane earlier and transitions into its roll sooner. The Super LED symmetric core at 2.63 RG with .034 differential provides noticeably more flare and hook potential than the original LED core used in earlier Purple Hammer iterations.
The 500 grit factory finish gives this ball surface texture right out of the box, which means it picks up friction earlier than the polished Pearl version. On sport patterns and medium-light house conditions, the solid cover creates a predictable, controllable shape that doesn’t overreact to friction changes. The 78D hardness rating keeps the ball compliant with current regulations while maintaining the durability that bowlers expect from Hammer urethane.
Who Is This Ball For?
Tournament bowlers who want an earlier-reading urethane option alongside the Pearl version. If you already carry the Purple Pearl Urethane 78D for length and a smooth arc, the solid version gives you a step-up in surface reaction for when you need the ball to read sooner. Strokers and control players who play straighter lines on short patterns will appreciate the predictable midlane roll. League bowlers transitioning off reactive equipment on dry backends will also find this ball effective as a control piece that still carries pins.
The Pros
- • Solid urethane cover reads the midlane earlier than the Pearl version
- • Super LED core upgrade provides more flare than the original Purple Hammer
- • 78D hardness formulation is more durable and compliant under current USBC rules
- • Excellent control piece on medium-light and sport patterns
The Cons
- • Shorter length than the Pearl version — less versatile on dry backends
- • Limited hook potential compared to reactive equipment
Who Is This Ball For?
The Hammer Purple Hammer 78D Urethane reads early and hooks sooner for maximum control on sport patterns and dry-medium oil. See ratings & video.
Technical Specifications
How It Compares
More Videos (1)
Purple Hammer 78D | Stephanie Zavala
Hammer BowlingVerified Bowler Reviews (6 reviews, 5.0/5 avg)
Not enough reviews for AI summary
Summaries generate automatically at 5+ reviews
The ball is great gives just as much if not more miss room than the purple pin did, granted its not comparable to the green pin. but its great, hooks more than the og purple and thats exactly what i needed to create a stronger entry angle
My first urethane ball in well over 20 years. Grew up throwing urethane on wood lanes in the 80's and early 90's. Got this as what I thought would just be another tool in my bag. Just got it today, so limited time with it, but I absolutely loved it! My go to, benchmark, ball is a Hammer Cherry Vibe I bought in 2010. This Purple Hammer moves about as many boards, but has that classic urethane smooth arc shape with a strong drive through the pocket. Thick shell makes a difference. Heavy hitter. Reads the friction, but doesn't jump off it like my Vibe, or even my Rhino Pearl does. This might be taking the #1 spot in my bag that my Vibe has owned for 16 years.
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.
Frequently Asked Questions
What oil condition is the Hammer Purple Hammer 78D Urethane best for?
Is the Hammer Purple Hammer 78D Urethane good for beginners?
What is the RG and differential of the Hammer Purple Hammer 78D Urethane?
How much does the Hammer Purple Hammer 78D Urethane cost?
What type of bowler should use the Hammer Purple Hammer 78D Urethane?
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