Mugen Seiki MTX-4 Rear Diff Mount Aluminium Upgrade - MTX4-32/TI by 3Racing  [MTX4-32/TI]

Rear diff housing details

This CNC aluminium rear differential housing is offered as a direct-fit replacement for Mugen Seiki MTX-4 chassis configurations and is listed under part MTX4-32/TI. It replaces the factory housing with a more rigid aluminium piece to support repeatable rear drivetrain alignment during setup and track sessions.

The housing is intended for situations where chassis stiffness and reliable diff positioning affect handling and gear engagement. It serves as the mechanical mount for the rear diff and interfaces with bearings, output cups, and the rear gearbox of MTX-4 layouts; always check bearing fit and freeplay before final assembly.

Using aluminium can help keep gear alignment steadier under heavier loads compared with some stock housings, but the housing does not change gear ratios or internal diff settings; tuning still depends on the internal components and oils you select.

This part is a solid aluminium replacement for the MTX-4 rear diff mount; fit it alongside matching bearings and differential internals to maintain proper drivetrain function.