Photo and specs courtesy of Brunswick. Reproduced with credit to the maker.
How it moves
Arcing turn (symmetric core). Dotted is skid, then the turn, then the roll into the pocket. Estimated from the coverstock, finish, core, and differential for a right-handed bowler with medium revs on a house shot. Lane conditions, speed, and layout move all of this.
How much the ball wants to hook, 1 (straight, a spare ball) to 10 (the strongest oil-eaters). The maker publishes no number for this ball, so this is estimated from the coverstock, core, finish, and differential.
Coverstock
A.C.T. 3.0 Solid
Reactive solid
Core
Portal X
Factory finish
500, 2000 Siaair Micro Pad
Color
Navy / Purple / Sky
Released
Not listed
USBC
Approved 2022-02-22
Weights and specs
Weight specs have not been entered yet.
Surface
Coarse grit
Coarse and fine
Fine grit or polish
500, 2000 Siaair Micro Pad. Sanded then smoothed (1500 to 3000 grit): enough tooth for oil, enough gloss to get down the lane. Most box finishes. Surface changes over games, and a pro shop can take any ball either way with a pad.
Reviews on YouTube
BowlersMart · 2024 · Brunswick Ultimate Defender Bowling Ball Review With Chris SlagterBowlers Paradise · 2024 · Brunswick Ultimate Defender Review (4K) | Bowlers ParadiseLuke Rosdahl · 2024 · The Ultimate Benchmark | Brunswick Ultimate Defender In Depth Review
Picked by search for this ball; videos and thumbnails belong to their creators and play on YouTube.
