Disclosed embodiments include power machines (e.g., 100; 200; 300) and related structures of lift arms (e.g., 230; 330), implement carriers (e.g., 272; 372), follower links (e.g., 375), and driver links (e.g., 380) which improve manufacturability, reduce component failures, and improve power machine design and functionality. In some embodiments, lift arm structures include cast lower lift arm portions (e.g., 339). The cast lower lift arm portions include contoured upper ends (e.g., 405) which are sleeved onto contoured lower ends (e.g., 410) of upper lift arm portions (e.g., 333) to control stress points and to reduce stresses on welds. The follower link structures can include follower links which are configured to be positioned at least partially outside of the lift arm structure to improve rear visibility. The driver link structures can be configured to be laterally overlapping with innermost surfaces (e.g., 680) on the lift cylinder (e.g., 338), but configured such that as the lift arm is raised the latera
