Yes, the stroke of the 2027+ Vivid Air D1 can be changed using part number 11.4118.113.017 (REAR SHOCK TRAVEL CHANGE KIT (INCLUDES TRAVEL REDUCERS, BOTTOM POST, AND BOTTOM OUT BUMPER) - VIVID C1+ (2024+), VIVID COIL C1+ (2025+)). Changing the stroke involves adding or removing reducers and replacing the bottom post and bottom-out bumper.
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