The 2011-2012 Monarch RT3 A1 shock can be serviced using the kits below.
2011 Basic: 11.4115.113.020 REAR SHOCK SERVICE KIT - BASIC - MONARCH RT3/RT/R 2011
2011 Full: 11.4115.113.010 REAR SHOCK SERVICE KIT - FULL SERVICE MONARCH RT3/RT/R 2011
2012 Solo Air Basic: 00.4315.032.240 AM REAR SHOCK AIR CAN SERVICE KIT, 50 HOUR - (INCLUDES SEAL GREASE/OIL) - MONARCH/MONARCH PLUS (2012)
2012 High Volume Basic: 00.4315.032.250 AM REAR SHOCK AIR CAN HIGH VOLUME SERVICE KIT, 50 HOUR - (INCLUDES SEAL GREASE/OIL) - MONARCH/MONARCH PLUS (2012)
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