A Sharper, More Dynamic Move on Medium Oil
About the Warning Alert
The Brunswick Warning Alert follows one of Brunswick’s most successful releases and builds on the proven performance of the original Alert with a sharper, more dynamic motion. It pairs the trusted symmetric Alert Core with the HK22 Savvy Hook Hybrid coverstock, the same cover formulation used on the Crown Victory, a combination engineered for medium oil where added length and a more defined backend matter most.
Compared to the original Alert, the Warning Alert pushes further down the lane before delivering a stronger move, while keeping a more continuous motion than the black Danger Zone. That makes it a versatile piece that excels during the transition and on higher-friction lanes, giving players the length, control, and backend shape they need to keep scoring as the pattern breaks down.
Understanding the Brunswick Alert Core and Brunswick Savvy Hook Hybrid HK22 Reactive
Brunswick built the Warning Alert for medium oil and the transition. The symmetric Alert core gives the ball a clean, readable roll, while the HK22 Savvy Hook Hybrid cover, finished at 500, 1000, 1500 Siaair with Crown Factory Compound, lets the ball get through the front of the lane before reading the friction with a defined, dynamic backend. The result is added length up front and a stronger, more responsive move down the lane than the original Alert. The full per-weight numbers are listed below.
A Proven Symmetric Engine Tuned for Length and a Defined Backend
At the heart of the Warning Alert is the symmetric Alert Core, the same trusted core that powered the original Alert. At 15 lb it measures an RG of 2.478 and a .037 differential, numbers that produce a clean, controllable roll with moderate flare. As a symmetric core, it delivers a smooth, predictable transition from skid to hook, so the Warning Alert reads the lane in an even, repeatable way rather than jumping off the spot. Brunswick wraps the Alert core in DynamiCore, the outer-core technology that adds durability and a stronger, more responsive hit through the pins.
Carrying that proven core forward, the Warning Alert keeps the Alert’s dependable roll but pairs it with a hybrid cover tuned for more length and a sharper backend. The combination is what gives this ball its more dynamic motion: it conserves energy through the front of the lane and then delivers a stronger, more defined move when it finds friction.
A Hybrid Cover Built for Length and a Dynamic Move on Medium Oil
Wrapping the Alert core is the HK22 Savvy Hook Hybrid coverstock, the same cover formulation found on the Crown Victory. Built on Brunswick’s HK22 base chemistry, the Savvy Hook Hybrid formulation blends the cleanliness of a pearl with the traction of a solid, so the Warning Alert clears the front of the lane and then reads the midlane and backend with a defined, dynamic move. Finished at 500, 1000, 1500 Siaair with Crown Factory Compound, the surface is set up for length on medium oil with a strong, responsive reaction when it hits friction.
Warning Alert Specs
RG and differential vary by weight. Specifications provided by the manufacturer.
Who This Ball Is Right For
Good to Know Before You Buy
BowlersMart Tips: Where the Warning Alert Fits in Your Brunswick Arsenal
Where It Fits in Your Arsenal
In the Brunswick lineup, the Warning Alert is the medium-oil hybrid you reach for when you want added length and a more dynamic backend than the original Alert. When the lanes open up further and you need more length and a cleaner backend, step to the Crown Victory Pearl. When the oil dries and you want a stronger, more controlled urethane-style read, the Danger Zone picks up where the Warning Alert leaves off.
Surface Adjustments
The 500, 1000, 1500 Siaair Crown Factory Compound finish is set up for length and a defined backend out of the box. Raise the grit or refresh the box surface to restore the clean front-end read, or take the surface down for a touch more traction when the volume climbs. Have surface changes done at your pro shop for an even, consistent finish.
Coverstock Care
Hybrid covers absorb oil over time, which softens the read. Wiping the Warning Alert down after every set and deep cleaning it periodically keeps its length and dynamic backend consistent over the life of the ball.
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Shop With Confidence at BowlersMart
The Warning Alert Bowling Ball ships free with no minimum purchase and is backed by our 60-day return policy. As an authorized Brunswick dealer, every ball is genuine and covered by the full two-year Brunswick warranty. Place your order before 2 PM EST and it ships the same day.


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