Kyosho Mini-Z MR-03 AWD Performance Main Shaft AWD-01 by 3Racing  [AWD-01]

High-stiffness main shaft for Mini-Z MR-03 AWD

This aluminum main shaft is designed as a drivetrain replacement for Kyosho Mini-Z AWD vehicles and is supplied under model AWD-01. It links motor output to the differential on MR-03 AWD-style chassis and is intended to work with the car's factory bearings and drivetrain parts.

When installing, check compatibility with Mini-Z MR-03 AWD chassis arrangements and inspect bearing seat and runout before reassembly. Typical fitment steps include removing the worn shaft, cleaning bearing surfaces and housings, applying light PTFE-compatible lubricant at metal-to-bearing contact points, and verifying free rotation with no binding. Avoid forcing components; if there is play or interference, recheck spur and pinion mesh and alignment.

In tuning terms, the aluminum shaft increases torsional stiffness versus common polymer shafts, which can reduce drivetrain flex and sharpen response but may move load to adjacent components. Keep an eye on bearing wear and other transmission parts after fitting. This part suits routine maintenance and modest performance upgrades for indoor tracks and club racing.