Replacement coil springs are not available for the 2017+ 30 Silver A3-A5. A replacement air spring is available for 27.5/29” variants, but is not available for 26” variants.
11.4018.010.231 FORK SPRING SOLO AIR ASSEMBLY - 80-120 MM-27.5/29 (THREAD PITCH 0.8MM) (INCLUDES TOP CAP, AIR PISTON, SHAFT BOLT) - JUDY SILVER A1/ 30 SILVER A3(2018+)
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