Description

Storm Concept

The SPI LAB Series introduces the Concept, our next innovative release that reverses the narrative on how core/cover combinations are developed for challenging patterns. The ARC Cover has the highest coefficient of friction (COF) values and is right at the USBC limit on oil absorption time. With the Concept, the coverstock acts as both the engine and the tires, while the Radius Weight Block behaves as the traction control – making sure the ball stays on-line to find the pocket. Since the coverstock is so strong and the weight block is very conservative in terms of RG/Diff, the Concept never wants to “lock up” or go forward down the lane. Even though the diff is very low, the cover technology ensures the ball does not carry oil down the lane as urethane is known to do. The cover forces the ball to continue hooking through the pins. The Concept, in the 14 – 16 pound weights, is a two-piece ball with a thick resin shell. The thicker shell raises the coefficient of restitution (COR) which has been shown to create more lively pin action.

INTRODUCING THE RADIUS™ WEIGHT BLOCK

At the heart of the Concept is its innovative core design, tuned to provide consistent, controlled motion across all weights. The 14 lb ball features an added mass inside the Radius Weight Block to increase differential, ensuring it matches the smooth, predictable reaction of the heavier 15–16 lb balls. For 12–13 lb balls, the Concept uses the Camber™ A.I. Core, specially engineered to maintain the same controlled arc while adapting to lighter ball dynamics. Across all weights, the core design keeps the ball on line, delivering precise traction control without locking up.

ARC™ PEARL COVERSTOCK

The Concept’s ARC™ Coverstock delivers the urethane-style motion that sets it apart. Its advanced pearl formulation contains mica, which tested better than the solid version, digging into oil more effectively when finished at the same surface grit. This allows the ball to maintain smooth, predictable motion across a wide range of lane conditions, helping it carry through the pins with consistent, lively action. Tunable and reliable, the ARC™ Coverstock ensures bowlers can achieve their desired shape on short patterns or flat, demanding conditions.