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

Technical notes for rear housing

This CNC-machined aluminium rear differential housing is a direct-fit replacement for Mugen Seiki MTX-4 chassis assemblies and carries the designation MTX4-32/TI. The design focuses on increased local stiffness and accurate bearing seat alignment to support consistent rear drivetrain behaviour under higher loads.

Intended for tuners and racers, the housing provides a rigid mounting surface for the rear differential and interfaces precisely with bearings, output cups, and the rear gearbox on MTX-4 layouts. During installation, verify bearing inner fits, axial clearance and shaft runout prior to final torque application to ensure optimal gear mesh and longevity.

While the aluminium housing improves mechanical stability and heat conduction compared with some stock materials, it does not change internal differential geometry or gear ratios. Performance tuning remains dependent on the chosen differential internals, shims, and oil viscosities.

For competitive setups that require repeatable rear diff alignment, this precision aluminium housing is a recommended upgrade; pair it with correctly sized bearings and chosen diff internals for best results.