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

Mini-Z MR-01 ball diff shaft summary

This shaft is designed as a replacement core for the Kyosho Mini-Z MR-01 ball differential. It allows the differential to pass drive while letting the wheels turn at different speeds during cornering and grip changes.

Fit a new shaft when you see scoring, looseness, or rough rotation that compromises smooth diff operation. Installing a fresh shaft restores consistent diff response and helps protect mating parts like balls and race tracks when used with suitable lubrication.

Installation follows the usual Mini-Z procedure: open the diff case, inspect balls and races, seat the new shaft correctly, and reassemble using the original clearances and preload. Test on your usual surface and tweak diff setup as part of setup checks.