- Concept Purple

First Impressions
The Storm Concept Purple shows up in a deep, saturated purple and gives off the manufacturer's signature Fruit Pop scent. At the center of this bowling ball works the symmetric Radius core, developed specifically for a calm and predictable ball motion. At fifteen pounds, this core is characterized by a very high RG of 2.610 and an extremely low differential of 0.020. These geometric parameters point to a very controlled and stable ball motion with exceptionally low flare potential. Wrapped around this core is the innovative ARC Pearl Reactive cover, which comes out of the box with a 1000 grit Abralon surface. This specific combination of a pearl material and a comparatively rough, matte surface should deliver a ball motion strongly reminiscent of classic urethane while cleverly retaining the dynamic advantages of a reactive resin. The rough finish allows the ball to read the oil pattern early, while the pearl cover is designed to carry energy efficiently through the midlane. The entire construction aims to ensure consistent accuracy and a steadily predictable motion under a wide range of conditions. The technical setup thus promises excellent, dependable lane read without the ball reacting uncontrollably or too sharply to dry areas. The core and cover combination is deliberately chosen so that the roll phase is initiated smoothly and steadily, producing a particularly even, round arc toward the pins.
Comparison
Using the proven Storm Phaze II as a reference, the conceptual difference of the Storm Concept Purple becomes immediately clear. While the Storm Phaze II is known for massive hook and a strong, early arc thanks to its powerful solid cover and considerably lower RG, the Storm Concept Purple behaves far tamer, rounder, and more controllable. The very low differential of just 0.020 on the Concept Purple limits flare potential considerably compared to the Phaze II, which keeps the ball much closer to the intended line and prevents extreme direction changes. Comparing the ball to a classic urethane piece such as the Storm Pitch Black, the Concept Purple shows a slightly delayed and cleaner reaction through the heads thanks to its modified reactive ARC Pearl cover. As a result it effectively stores a bit more energy for the backend while maintaining the smooth arc shape. It thus offers a modern, technological alternative for players who want exactly the controllability of urethane but don't want to give up the dynamic carry and hitting power of a reactive ball at the pins. In difficult stages of the transition, the Storm Concept Purple is also noticeably less sensitive to friction than more aggressive asymmetric balls or heavily sanded solid reactives. It precisely fills the gap between traditional urethane and weaker, smooth reactive balls that often react too sensitively on dry lanes.
On the Lanes
Given its specific characteristics, the Storm Concept Purple is designed primarily for medium to dry lane conditions as well as flat sport patterns. Its high RG lets it glide effortlessly through the heads without much energy loss, while the roughed-up 1000 grit surface simultaneously ensures it doesn't lose contact with the lane and doesn't overshoot the target. This balanced ball motion makes the ball a natural fit for demanding tournament situations that require exact, repeatable control of the boards in order to find the pocket consistently and safely. Players with very high rev rates in particular, such as two-handers or powerful strokers, benefit enormously from the low differential. These player types often need a ball that reduces the hook they generate to a controllable level and doesn't overreact abruptly when it hits friction at the end of the oil pattern. When the lanes break down over the course of a tournament, move into transition, and stronger balls start reacting unpredictably and too aggressively, the Storm Concept Purple offers an absolutely reliable and stable alternative. It smooths out the backend noticeably and provides continuous, strong carry through the pin deck. Since it doesn't by nature react too strongly to small errors in the release or to subtly varying oil patterns, it is an invaluable tool for holding your chosen line confidently even late in the block. The clever combination of a smooth pearl cover and urethane-like control makes it an indispensable tactical problem solver for serious tournament and league play on challenging, short patterns.