Mini-Z MR-02 MR-015 Titanium Differential Shaft for Kyosho KZ-05 by 3Racing  [KZ-05]

This titanium differential shaft is an aftermarket replacement for Kyosho Mini-Z platforms, listed under model KZ-05. It is intended for use with MR-02 MM/RM variants and MR-015 differentials where compatibility with the OEM shaft is confirmed.

How it works: by reducing the rotating mass inside the differential, the shaft helps maintain gear alignment during quick inputs and can produce crisper transient behaviour on small-scale race cars, aiding precise steering corrections.

Fitting summary: remove the gearbox cover and differential housing, transfer the internal differential components and fit the titanium shaft in place of the stock item. Reassemble and verify correct mesh and free rotation. No chassis alterations should be necessary for compatible differentials.

Tuning tip: use the KZ-05 as part of a balanced tuning plan. The change is subtle, so pair it with tyre, gearing and suspension adjustments to refine corner entry and mid-corner balance.