The HI0404136 EX-2 slide block from Hirobo is an RC-scale replacement part intended for use in helicopter cyclic link assemblies. It serves as a small mechanical interface between control linkages, helping maintain predictable slide movement during collective and cyclic control inputs.
This slide block is listed under common parts for Eagle, Freya, EX and SX model families, so check your airframe's parts diagram to confirm fit before installing. It is supplied as a single replacement unit and intended for hobby-scale helicopters only.
Installation notes: remove the affected linkage, inspect mating pins and bearings for wear, then fit the slide block and verify free travel without binding. Avoid over-tightening retaining hardware and verify full control throws through the transmitter and servos before flight. Use this part as a tuning and maintenance component rather than a performance upgrade; its role is to restore correct linkage geometry and smooth travel.
Use the HI0404136 slide block when replacing worn linkage slides or when restoring correct cyclic movement, and validate linkage alignment on the bench before returning the helicopter to flight service.
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