Hirobo HI2521134 RC Helicopter Collar 3 x 6 x 12.25  [HI2521134]

Component Locator for Precision Fit

Listed under Hirobo helicopter general parts, this RC-scale collar carries the HI2521134 reference and the 3 x 6 x 12.25 dimension for applications that demand accurate axial location and concentric alignment.

The collar functions as an axial stop and alignment sleeve inside transmission or rotor components. For replacement, confirm mating dimensions, clean contact faces, slide the collar into the shaft or housing, and use the model's original method to secure it. Perform a post-install check of runout and axial clearance as part of routine setup to ensure reliable operation.