Anso RockShox/Specialized Brain Shock Service Kits. Features: Air can and damper service kits for Specialized Brain rear air shocks with IFP Includes upgraded nitrogen chamber plug (needle tool is required to fill the nitrogen chamber) Includes PTFE backup rings (2018-20 version also includes main damper shaft seal) Also includes Schrader valve core rated to 800 PSI, while the stock valve core is only rated to 350 psi Made in and imported from Ukraine Specs: Year Model:Specialized Brain rear shock, 2021+ Description:air can and damper service kit