In early 2020 (March/April timeframe I believe - I can't remember when they removed the "stealth" model), MYP bundled a bunch of things into an optional "free" set of upgrades: 21" Uberturbine, red performance brakes, lowered suspension, higher top speed... If the OP's build is early enough, and they chose to not get the upgrade package, it might not have the performance brakes from the factory.