Mini-Z AWD Rear knuckle arm holder Precision aluminium (Toe Out -0.2mm) - MZA031R/-0.2 by GPM  [MZA031R/-0.2]

Technical overview of the rear knuckle arm holder

This aluminium rear knuckle arm holder is an aftermarket replacement for Kyosho Mini-Z AWD micro touring platforms and MR-03 AWD variants, referenced as model MZA031R/-0.2. It is supplied as a single replacement part intended for precise rear axle toe adjustments where small geometry changes influence handling dynamics.

The component enforces a fixed -0.2mm toe-out relative to stock geometry. In practical setup work this small offset is used to tune transient characteristics, affecting rear traction onset and yaw response to refine entry and exit behaviour. Constructed from aluminium alloy, the holder reduces mounting compliance compared with original plastic parts, aiding repeatable alignment under load.

Service and fitment notes: designed to replace the factory rear knuckle arm holder on compatible MR-03 AWD chassis. Install using standard hex drivers, verify bearing seating and fastener torque, and confirm wheel alignment on a setup rig to validate the desired toe setting. Inspect threads and mating faces during installation to prevent damage.