Kyosho - Pressure Plate (MR-03/04/Ball Diff.)
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Pressure plate for Mini-Z ball diff
This Kyosho MZW705-3 pressure plate is an RC-scale replacement part designed specifically for Mini-Z ball differentials in MR-03 and MR-04 platforms. It serves as the contact cap that transmits preload and helps hold the ball bearings in the differential stack, so using a like-for-like pressure plate ensures the intended feel and longevity of the diff assembly.
Compatibility is focused on MR-03 and MR-04 ball diffs only, so confirm your chassis uses a ball-type differential before fitting. The part is typically used when replacing worn components or when experimenting with differential preload and engagement characteristics during setup and tuning sessions.
Installation is straightforward for experienced Mini-Z technicians: remove the differential housing, take out the diff stack, fit the pressure plate in its seating position, and reassemble while checking preload and clearance. Use the factory service manual or established teardown guides for torque and sequence references to avoid over-tightening or misalignment.
Tuning role: small changes to the pressure plate surface or seating can alter how the ball diff transmits torque and returns to neutral, affecting corner exit traction and steering response. When adjusting setup, make incremental changes and test on a consistent surface to evaluate effects accurately.
Maintenance notes: inspect the pressure plate for wear or scoring during routine diff service, clean mating surfaces, and replace if signs of deformation appear. Lubricants used in the diff should be compatible with ball differentials and applied sparingly to preserve consistent preload.
Kyosho Part# MZW705-3
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