Hirobo HI2521127 Collar 5 x 8 x 11.5 collar spacer for RC helicopter linkages  [HI2521127]

Collar for helicopter linkages

This Hirobo HI2521127 collar is a small-scale RC helicopter accessory defined by its 5 x 8 x 11.5 marking and intended for general parts use within helicopter assemblies. It functions as a collar or spacer in linkage paths and shaft locations where a precise dimensional fit is required.

Use this collar to maintain alignment between links and short shaft sections, to preserve axial spacing, and to reduce lateral play where components meet. Because the piece is a dedicated RC part, treat it as a replaceable wear item and inspect it when you disassemble rotor head or tail assemblies.

Installation notes: verify the dimension match with the shaft and mating bore before final assembly, check for smooth rotation after fitment, and replace if visible wear or deformation appears. Keep the tone practical and focus on fit and alignment rather than altering primary control geometry.