MR-03 MR-04 Ball Differential Pressure Plate Compatible with Mini-Z Kyosho MZW705-3  [KY-MZW705-3]

Pressure plate designed for Mini-Z ball diffs

The Kyosho MZW705-3 pressure plate is a dedicated replacement part for Mini-Z ball differentials fitted to MR-03 and MR-04 platforms. It serves as the contact cap that applies preload and secures the ball bearings in the differential stack; using the correct plate keeps the diff performing as expected.

This item is compatible only with MR-03 and MR-04 ball-type differentials, so confirm your chassis uses that diff type before purchase. It is commonly used to replace worn parts or when adjusting differential preload to modify handling traits during setup work.

Installation follows standard Mini-Z servicing steps: remove the diff case, take out the ball stack, locate the pressure plate in its seat, and reassemble while checking clearance and preload. Refer to official service documentation or trusted teardown instructions for correct reassembly sequence and torque guidance.

Tuning impact: small changes in plate contact or seating can alter how the ball differential transfers drive and recenters, which affects traction on corner exit and steering characteristics. Make measured changes and test on a consistent surface to assess results.

Maintenance guidance: inspect the pressure plate for scoring or deformation during routine servicing, clean mating surfaces, and change the plate if signs of wear are present. Use lubricants suitable for ball diffs and apply them sparingly to maintain consistent preload.