Yes, the 2027+ Vivid Air Ultimate and Select+ D1 still feature Adjustable Hydraulic Bottom Out. You can read more about ABO at the link below.
https://www.sram.com/en/rockshox/learn/shock-deep-dives/hydraulic-bottom-out
RockShox service kits and spare parts are best obtained through your local shop or dealer. See our dealer locator, below, to find a dealer near you. If no one is currently listed near you, then please search for local shops via your preferred web browser.
https://www.sram.com/en/dealer-locator
Manuals and additional information about RockShox and SRAM components can be found at our service site, linked below.
https://www.sram.com/en/service
Further questions?
Reach out to Rider Support by Asking A Question at the link below.
https://www.sram.com/en/rockshox/campaigns/rockshox-rider-support