Mini-Z MR-01 Precision Ball Diff Shaft KM-010 by 3Racing  [KM-010]

Technical summary for Mini-Z MR-01 diff shaft

This replacement shaft is engineered as the rotating core for the Kyosho Mini-Z MR-01 ball differential. It provides the central interface around which balls and races operate, enabling effective torque split while permitting wheel speed differences under cornering loads.

Fit a new shaft when radial or axial play, scoring, or uneven rotation are evident. Installing a service shaft reestablishes predictable diff behaviour and reduces accelerated wear to the balls and race tracks when combined with correct lubrication practices.

Procedure for installation: separate the diff housing, inspect and clean the balls and race surfaces, seat the replacement shaft ensuring accurate alignment, and reassemble using the original preload and clearance settings. Validate diff response on the circuit and make incremental tuning adjustments as part of setup work.