MUGEN MRX5 Front Lower Arm Shaft Upgrade Kit - Arrowmax AM-MRX5-H2105  [AM-MRX5-H2105]

Front lower arm shaft for MRX5 chassis

The Arrowmax AM-MRX5-H2105 front lower arm shaft is designed for the MUGEN MRX5 and manufactured from spring steel with a titanium nitride treatment. The coating reduces friction at pivot points and improves resistance to wear during repeated running. It is supplied as two pieces suitable for side-specific or matched replacements.

As a wearable direct-fit component, the shaft contributes to suspension behaviour and consistency. Lower pivot friction aids neutral return and can make handling more consistent over a race program. The TiN surface helps prevent binding where the shaft contacts plastic or alloy arms and retaining hardware.

Fitting guidance: check alignment to the MRX5 lower arm and inspect mating holes for excessive play before refitting. Replace both sides if scoring or uneven wear appears, and ensure all clips or screws are properly seated. Use light RC-grade lubricant sparingly on contact surfaces and avoid heavy greases that attract contaminants.