Best Size 5 Reaction Balls in 2026

SLASH THE COMPETITION: The Katana Assault takes the legendary Katana core and adds a flip block to it to increase backend response.

SHINY STRENGTH: The Katana Assault features our new HK22 base materials. This base cover provides rich, impressive colors and super responsive backend reaction. A new reaction shape for our pearl, hybrid and shiny solid bowling balls!

BACKEND YOU CAN COUNT ON: In addition to the HK22 base cover, we added projection additives to gain additional length and backend you have yet to see in the Radical lineup.

SLASH THE COMPETITION: The Katana Assault takes the legendary Katana core and adds a flip block to it to increase backend response.

SHINY STRENGTH: The Katana Assault features our new HK22 base materials. This base cover provides rich, impressive colors and super responsive backend reaction. A new reaction shape for our pearl, hybrid and shiny solid bowling balls!

BACKEND YOU CAN COUNT ON: In addition to the HK22 base cover, we added projection additives to gain additional length and backend you have yet to see in the Radical lineup.

UNIQUE SYMMETRICAL BALL REACTION: The Crypto features a new Symmetric core paired with our strongest Ai cover yet. This combo leads to midlane hook and power at the pins!

POWER AT THE POCKET: Features DynamiCore outer core technology to mimic thick shell hitting power and durability. DynamiCore is Brunswick's industry leading innovation in outer core technology. This leap in bowling ball technology is a more durable outer material that yields less compression upon impact increasing hitting power and creating an undeniable difference in sound and pin carry.

BUY WITH CONFIDENCE: The Crypto carries a 2-year limited manufacturer's warranty.

EXPLORE THE UNKNOWN: The Outer Limits features a new core concept designed to enhance backend motion and continuity.

STRETCHING THE REALM: The Outer Limits features a low-RG and High-Diff Asymmetrical core. The core numbers were developed using a new method to help determine and predict ball motion.

POWER AT THE POCKET: Features DynamiCore outer core technology to mimic thick shell hitting power and durability. This technology is a more durable outer material that yields less compression upon impact, creating an undeniable difference in pin carry.

EXPLORE THE UNKNOWN: The Outer Limits features a new core concept designed to enhance backend motion and continuity.

STRETCHING THE REALM: The Outer Limits features a low-RG and High-Diff Asymmetrical core. The core numbers were developed using a new method to help determine and predict ball motion.

POWER AT THE POCKET: Features DynamiCore outer core technology to mimic thick shell hitting power and durability. This technology is a more durable outer material that yields less compression upon impact, creating an undeniable difference in pin carry.

Unique Design - Our two speed punching ball system is unlike any other product on the market. Simulate a head / stomach punch combo to elevate your boxing technique above your opponents.

MULTIPLE FUNCTIONS - increase reaction speed,concentration ,agility and hand-eye coordination ,burn calories, get fitness,body shaping,joy or relieve your feelings

A Simple Workout Boxing Reflex Ball at Home: This soft reflex ball is an ideal tool to keep kids away from the computer and exercise indoor boxing. No need to wear gloves and don’t worry about getting hit in the eyes by rebounded balls

IT'S VERY SNEAKY: The Sneak Attack Solid gives bowlers another option for drier conditions or short patterns.

CREEPIN' INTO THE POCKET: The Sneak Attack Solid fills a nice void for an option for drier lanes that requires a smoother, more consistent reaction. The MTS-1 Solid, paired with the Sneak Attack Symmetric core, is a perfect match for higher volume short patterns and lighter oil conditions!

POWER AT THE POCKET: Features DynamiCore outer core technology to mimic thick shell hitting power and durability. This technology is a more durable outer material that yields less compression upon impact, creating an undeniable difference in pin carry.

BREAKING THE MOLD: The Innovator Solid fills a nice gap at the top of the hook scale for Radical, perfectly complementing the original pearl Innovator.

PIONEER OF STRENGTH: The Innovator Solid features the Motion Magic Plus Solid coverstock, giving bowlers maximum traction throughout the lane.

GROUNDBREAKING CORE SHAPES: The Innovator Solid uses the same core as in the original Innovator, giving bowlers a familiar reaction and allowing them to handle the heavier patterns with ease.

STRIKE IT RICH: The Radical Crypto Boom is the latest addition to the Reliable lineup. Need backend, this ball will fill the void with no issue!

CORNER THE MARKET: The Crypto Boom is a pearl version of the original Crypto but with one big difference…it also features our newest technology. HyperKinetic22 has been praised insutry-wide for it's angular, strong reaction shape!

COMPLEMENTARY SHAPE: The Crypto Boom provides a perfect complement to anyone who has a symmetrical solid in the bag already. The Crypto Boom will give those bowlers a great 1-2 punch to cover pretty much any lane condition they will face!