Avid Master Cylinder/Lever Parts. Features: Lever-to-piston pushrods are listed under lever blades & pivot parts Elixir-CR pad contact adjuster is non-serviceable, use complete MC/lever replacement if needed 2-bolt MatchMaker (MM) or 1-bolt/nut MatchMaker-X (MMX) 'discrete' non-hinged, stand-alone bar clamps with black (steel), stainless (SS), or titanium (Ti) hardware. Models in parenthesis indicate stock application, but can be used with other MM-compatible brakes (actual MM/MMX integration clamp kits available in disc brake accessories) Parts listed are for servicing a single MC/lever assembly unless noted otherwise Specs: Model:Guide RSC/X0 Trail Description:lever bearing kit + hardware