Yokomo YOKSD643G - Ring Gear & Drive Gear (Graphite) for MR-4TCSD Front One-Way & Solid Axle  [YOKSD643G]

This is an RC-scale graphite ring gear and drive gear set intended for MR-4TCSD front one-way and solid axle installations. The components are supplied as replacement drivetrain parts to be used where the front one-way or solid axle assembly requires a direct-fit gear set in graphite material.

Focus is on compatibility and practical use: confirm the MR-4TCSD front assembly type before ordering, inspect existing gear mesh and bearing condition, and use this set when worn or damaged gears produce play or inconsistent engagement. The graphite construction is noted for stable dimensional behaviour and suitability for regular maintenance cycles in hobby RC drivetrains.

Installation notes: remove power source and secure chassis before work, disassemble the front drive housing per your chassis manual, clean mating surfaces, fit gears to maintain correct mesh, verify alignment with the front one-way or solid axle components, and rotate the assembly by hand to confirm smooth engagement before reassembling electronics and testing under low throttle.

Tuning role: this gear set is a service-level replacement that helps preserve consistent tooth engagement and drivetrain feel, and it is useful when adjusting gear mesh or diagnosing front-end driveline behaviour during setup sessions.