MUGEN MRX5 Front Lower Arm Shaft, Titanium Nitride Coated - Arrowmax AM-MRX5-H2105  [AM-MRX5-H2105]

MRX5 front lower arm shaft upgrade

This Arrowmax AM-MRX5-H2105 replacement shaft is built for the MUGEN MRX5 chassis as a front lower arm pivot. Manufactured from spring steel with a titanium nitride surface finish, it lowers friction at pivot points and resists surface wear through repeated running. The item ships as 2 pcs suitable for one side or for paired replacements depending on your maintenance plan.

As a direct-fit wearable component, the shaft affects suspension smoothness and consistency. A lower-friction pivot helps the arm return to neutral more predictably, which can stabilise handling across multiple runs. The coated surface reduces binding where the shaft meets plastic or alloy arms and retaining hardware.

Installation tips: verify alignment with your MRX5 lower arm and inspect mating holes for play. Replace items as a matched pair if scoring or wear is visible, and ensure retaining clips or screws are fully seated. Apply light, RC-safe lubrication sparingly on contact faces; avoid heavy greases that attract grit.