Mugen MRX5 7075-T6 2nd Gear Housing by Arrowmax AM-MRX5-H0289  [AM-MRX5-H0289]

2nd Gear Housing for Mugen MRX5

This housing replaces the standard second gear housing on the Mugen MRX5 chassis, providing a direct aluminium alternative for the gearbox mounting point. Machined from 7075-T6 aluminium, the part is intended as an RC-scale upgrade to reduce flex where the second gear locates and to offer a firmer mounting interface for drivetrain components.

Installation is straightforward for users familiar with MRX5 disassembly: remove the original housing, transfer any necessary bearings or spacers, and refit using the MRX5 mounting points and original fastening hardware. Check gear mesh and shaft alignment after installation to ensure smooth drivetrain operation.

In tuning terms this housing is a chassis-level hop-up aimed at reducing local compliance in the gearbox area. That can help when evaluating gear engagement, bearing play, and other drivetrain adjustments during setup or maintenance sessions.