Mugen Seiki MTX-4 Rear Differential Housing CNC Aluminium - MTX4-32/TI by 3Racing  [MTX4-32/TI]

Aluminium rear housing overview

This CNC-machined aluminium rear differential housing is a direct replacement for Mugen Seiki MTX-4 chassis assemblies and is supplied as part MTX4-32/TI. The stiffer aluminium construction is intended to replace the stock housing to improve rear drivetrain consistency during setup and on-track use.

Fit this housing when chassis rigidity and stable differential alignment are priorities for handling and gear mesh. The unit mounts the rear differential and interfaces with bearings, output cups, and the rear gearbox on MTX-4 layouts; installers should confirm bearing seat fit and axial clearance before final assembly.

During tuning, the aluminium housing helps preserve gear alignment under higher loads compared with some stock materials, supporting repeatable setup changes. It does not change gear ratios or the diff internals, so tuning remains dependent on chosen differential components and oil weights.

Choose this aluminium housing if you want a robust, precision rear diff mount for the MTX-4; remember it replaces only the housing and should be paired with compatible bearings and differential internals when assembling.