Yes, replacement air springs are available for the 2017-2018 Sektor Silver RL A2. Springs are Boost and non-Boost specific.
Non-Boost:
11.4018.010.105 FORK SPRING SOLO AIR ASSEMBLY - 140MM-26/27.5/29 (INCLUDES TOP CAP, AIR PISTON, SHAFT BOLT) - SEKTOR SILVER A1
Boost:
11.4018.010.224 FORK SPRING SOLO AIR ASSEMBLY, 130-150MM, 26/27.5/29 (THREAD 0.8MM)(TOP CAP, PISTON, SHAFT BOLT, SPACERS) RECON SILVER RL B1+/TK C1+ (2017+)/RECON RL A1-A2 BOOST(2018-2020)
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