Purple Hammer 78D | Kevin Tabron

Hammer 78D Review

The Hammer 78D delivers solid urethane performance at a great price, ideal for managing lane transition and controlled pocket angles. Watch the review.

By BowlingBallVideos.com Staff Tested Apr 4, 2026 7 videos analyzed 3 verified bowler reviews
7.9
Overall
Great Score
Weight
12-16 lbs
Coverstock
Urethane
Core
Symmetric
Hook
Low
Price
$149.95

Performance Analysis

Performance Analysis

The Hammer 78D combines the proven Hammer Super LED symmetrical core with the Urethane Pearl 78D coverstock to create a ball designed for control and precision on dry to medium oil conditions. With an RG of 2.63 and differential of .034, this ball provides a smooth, predictable motion that reads the lane early and maintains energy through the pins. The 500-grit factory finish gives it enough surface to grip the lane while still allowing for length through the front part of the lane.

What sets the 78D apart in the urethane category is its balance of control and performance. The symmetrical core design ensures consistent roll characteristics, while the urethane pearl coverstock provides the characteristic smooth, arcing motion that urethane balls are known for. This combination makes it particularly effective for bowlers looking to control the pocket or create better entry angles when reactive resin balls are reading too early. At $149.95, it represents excellent value in the urethane market, offering performance characteristics typically found in higher-priced options while remaining accessible to a broader range of bowlers.

Who Is This Ball For?

  • Bowlers seeking controllable urethane motion
  • Players looking to open up lanes
  • Budget-conscious bowlers wanting urethane performance
Hook Potential
4.0
Length Through Heads
6.0
Back-End Continuity
3.0
Pin Action
5.0
Versatility
6.0
Value for Money
7.0

The Pros

  • Excellent control and predictability
  • Strong mid-lane read with controllable motion
  • Great value for urethane performance

The Cons

  • Limited backend reaction
  • Not suitable for heavy oil conditions

Who Is This Ball For?

The Hammer 78D delivers solid urethane performance at a great price, ideal for managing lane transition and controlled pocket angles. Watch the review.

Bowlers seeking controllable urethane motionPlayers looking to open up lanesBudget-conscious bowlers wanting urethane performance

Technical Specifications

Core Details (Hammer Super LED Core Core)
RG (15 lbs) 2.63
Differential 0.034
Coverstock Urethane Pearl 78D
Core Type Symmetric
Factory Finish 500 Grit
Color Purple
Release Date March 2026

How It Compares

More Videos (6)

Purple Hammer 78D | Boog Krol
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Purple Hammer 78D | Boog Krol

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Black Pearl Urethane Hammer 78D | Release Video
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Black Pearl Urethane Hammer 78D | Release Video

Hammer
ONLY BROUGHT PURPLE HAMMER 78D! | BrunsNick Bowls League! | HOUSE -OF- PAIN | 03.12.2026
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ONLY BROUGHT PURPLE HAMMER 78D! | BrunsNick Bowls League! | HOUSE -OF- PAIN | 03.12.2026

BrunsNick
THE GOAT v2.0 ๐Ÿ”จ | Purple Hammer 78D
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THE GOAT v2.0 ๐Ÿ”จ | Purple Hammer 78D

BrunsNick
Me vs PBA Pro Using A Ball Everyone On The Tour Loves | Hammer 78D
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Me vs PBA Pro Using A Ball Everyone On The Tour Loves | Hammer 78D

Nate and Elise
They Did It! | Purple Hammer 78D!
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They Did It! | Purple Hammer 78D!

The Hype

Verified Bowler Reviews (6 reviews, 5.0/5 avg)

5.0out of 5

6 verified purchase reviews

100% of bowlers recommend this ball

Write a Review

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sdap Mar 24, 2026

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

Ken Mar 27, 2026

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.

Christopher Monroy Apr 16, 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.

Frequently Asked Questions

What oil condition is the Hammer 78D best for?
The Hammer 78D is designed for medium-light oil conditions. It features a urethane coverstock with a 500 Grit finish, which gives it the length and control needed on lighter oil patterns where stronger balls would overreact.
Is the Hammer 78D good for beginners?
The Hammer 78D has low hook potential, making it a forgiving option that newer bowlers can control. Its predictable motion helps build confidence while still providing enough reaction to develop technique.
What is the RG and differential of the Hammer 78D?
The Hammer 78D has an RG of 2.63 and a differential of 0.034. The higher RG means it stores energy longer, pushing further down the lane before transitioning. The lower differential keeps the ball motion smooth and controlled.
How much does the Hammer 78D cost?
The Hammer 78D is priced at $149.95. This is a competitive price point for a ball in its performance category. You can find it at BowlersMart.com with free shipping and 60-day returns.
What type of bowler should use the Hammer 78D?
The Hammer 78D is best suited for bowlers looking for a predictable, smooth ball motion. With its urethane coverstock on medium-light conditions, it works well for speed-dominant players and straighter bowlers who need control without over-hooking.

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