The Tamiya Mini 4WD Aluminum Shaft Stopper in pink, model M4WD-38/PK, is a precision service part intended to lock shaft position and limit axial movement. It is useful during setup work where consistent shaft location contributes to repeatable handling.
Designed to interface with standard Mini 4WD shaft layouts, this aluminium stopper allows tuners to maintain alignment under load. Confirm clearances against bearing seats and adjacent components when fitting to tuned drivetrains.
Use this stopper to reduce variables caused by shaft shift; it complements bearing upgrades and wheel balancing to yield steadier lap times. Check mounting torque and verify gear mesh after installation as part of routine setup checks.