Tamiya TRF418 Front Lower Arm Shaft Set, Spring Steel TiN Coating - Arrowmax AM-417-BC10  [AM-417-BC10]

TRF418 front lower arm shaft replacement

This part is a scale replacement shaft designed for the front lower arm positions on Tamiya TRF418 layouts. Arrowmax manufactured the AM-417-BC10 shafts from spring steel and added a titanium nitride (TiN) finish to lower surface friction and help resist wear.

The front lower arm shaft affects how the lower arm articulates and how freely it pivots when loaded. The TiN finish reduces contact friction where the shaft meets arms or bushings, maintaining smoother operation across many runs. The item is supplied as a set of 2 pcs intended for front mounting.

Installation matches standard TRF418 arm mounts, though you should verify fit and clearance against your arms and bushings before completing assembly. Carry out periodic checks to monitor the coating condition and replace shafts if you notice significant wear.