Hammer Purple Pearl Urethane 78D Bowling Ball

A Harder, More Controllable Urethane

About the Purple Pearl Urethane 78D

The Hammer Purple Pearl Urethane 78D is the harder, more controllable version of Hammer’s classic purple urethane. It pairs the symmetric Super LED Core with the Urethane Pearl 78D coverstock, delivering a smooth, predictable, low-flare motion for dry to medium oil and short patterns. The 78D formulation adds control and length for precise, on-line shotmaking.

The Purple Pearl Urethane 78D reads the lane gently and predictably. The harder 78D urethane cover generates even less friction than a standard urethane, so the ball holds a controlled line with a touch more length where a strong reactive ball would over-hook. It is a dependable choice for short patterns, broken-down lanes, and precise control shots.

Understanding the Hammer Super LED Core and Hammer Urethane Pearl 78D

Hammer built the Purple Pearl Urethane 78D for harder, more controllable urethane motion on dry to medium oil. Specifically, the symmetric Super LED Core posts a 2.632 RG and a low .034 differential, numbers that produce minimal flare and a smooth, on-line motion, while the harder Urethane Pearl 78D cover at a 500 Siaair Micro Pad finish reads the lane gently rather than snapping. As a result, it delivers a controlled, repeatable shape on short and worn conditions. The per-weight specifications are listed below.

A High-RG, Low-Differential Symmetric Core for Minimal Flare

At the heart of the Purple Pearl Urethane 78D is the symmetric Super LED Core. At 15 lb it measures a high 2.632 RG and a low .034 differential, numbers that produce minimal track flare and a smooth, controlled motion. The high RG and low differential keep the reaction even and predictable, exactly what a control ball needs.

That low-flare, on-line behavior is what gives the Purple Pearl Urethane 78D its controlled feel. As a symmetric core, it reads the lane the same way shot after shot, so the ball holds its line through dry and short patterns rather than over-reacting at the breakpoint.

A Harder 78D Urethane Cover for Maximum Control

The Purple Pearl Urethane 78D wraps that core in Hammer’s Urethane Pearl 78D coverstock at a 500 Siaair Micro Pad finish. Urethane generates less friction than reactive resin, and the harder 78D formulation generates even less, so the ball reads the lane gently and holds a controlled line with a touch more length instead of snapping at the breakpoint.

That smooth, even reaction is exactly what makes the Purple Pearl Urethane 78D a control weapon. On short patterns and broken-down lanes, it gets a predictable read where a strong reactive ball would jump. Take the surface down for a touch more grip, or smooth it up for a bit more length, with surface changes done at your pro shop.

Purple Pearl Urethane 78D Specs

RG and differential vary by weight. Specifications provided by the manufacturer.

BowlersMart Tips: Where the Purple Pearl Urethane 78D Fits in Your Hammer Arsenal

Shop With Confidence at BowlersMart

The Hammer Purple Pearl Urethane 78D Bowling Ball ships free with no minimum purchase and is backed by our 60-day return policy. As an authorized Hammer dealer, every ball is genuine and covered by the full one-year Hammer warranty. Place your order before 2 PM EST and it ships the same day.

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