Yokomo Y4-641 Front One-Way Housing for DP-YD4  [Y4-641]

Front One-Way Housing for DP-YD4

This front one-way housing is an RC-scale replacement part designed to accept YD-4 standard front components. It houses a one-way mechanism intended for front drivetrain setups, and its rotation direction differs from drift-specific packages, so verify orientation before installation.

Fit and compatibility are focused: the housing is produced to match DP-YD4 geometry and mounting points. During assembly, check alignment with the differential output and confirm the one-way rotates in the expected direction for your setup. If you swap parts from drift kits, re-check rotation and engagement.

For tuning, this housing plays a role in front-end engagement characteristics. Use it when you need the front assembly to freewheel in one direction and lock in the other, and combine with matched bearings and drive cups to maintain consistent operation. Regularly inspect the one-way surfaces and bearings for wear to preserve smooth engagement.