Mini-Z MR-015 Tuned Outer Diff Shaft KZ-07B by 3Racing  [KZ-07B]

Replacement outer shaft for Mini-Z MR-015 diffs

This replacement piece is made to fit the Kyosho Mini-Z MR-015 platform and supplies the outer tuned ball differential shaft listed in the product title. It is an RC scale replacement intended to restore or refine the outer differential action during a rebuild of the MR-015 unit.

Within the ball differential the outer shaft affects torque split and the behaviour during transitions between grip and slip. Tuners will find that swapping this shaft can influence traction response and overall balance, so it is common to re-evaluate internal settings after installation.

Fitting requires opening the MR-015 differential housing to access the outer shaft and ball set, thorough cleaning of mating surfaces, and reassembly to the correct clearances. Using proper Mini-Z internals helps retain smooth drivetrain operation.