HIROBO HI2521058 4 x 6 x 5 Linkage Collar for RC Helicopters  [HI2521058]

Compact axial spacer for helicopter linkages

The HIROBO collar identified as model HI2521058, sized 4 x 6 x 5, is made for HIROBO helicopter assemblies where small, precise spacers are required to control component positions.

It operates as a locating collar to regulate axial placement and clearance of rotor elements and linkage joints. Typically the part is positioned on a shaft or within a linkage bore to maintain consistent spacing; final fastening should comply with the helicopter kit or service manual recommendations.

When preparing for flight, verify the 4 x 6 x 5 measurement fits the mating shaft or bore, check free rotation for correct alignment, and ensure there is no binding. This is supplied as a standard replacement or maintenance item within the HIROBO parts range.