The Yokomo S4-010C93A is a 93mm centre drive shaft manufactured for use with the YZ-4S centre differential to maintain drivetrain geometry and reduce unwanted movement. It is designed as a direct-fit replacement for the YZ-4S assembly.
The 93mm specification corresponds to the YZ-4S centre differential layout, providing consistent torque transfer and helping to limit lateral play that can affect handling and component life.
This centre drive shaft is compatible with the YZ-4S chassis, including the B-YZ4SF version, and fits with common hand tools to allow straightforward servicing and replacement when needed.
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