MR-4TCSD Ring & Drive Gear Upgrade (Graphite) - YOKSD643G by Yokomo  [YOKSD643G]

Yokomo SD-643G - MR-4TCSD Ring Gear & Drive Gear (Graphite) for Front One Way & Solid Axle
Price:
AUD$13.45
Brand:
Yokomo
Model:
YOKSD643G
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Or you may find similar product under the
Spares / Hop-ups - Yokomo - YD-4 category
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Tuning-Focused Graphite Drive Set for MR-4TCSD

This graphite ring and drive gear pair is designed specifically for MR-4TCSD front one-way and solid axle applications. Supplied as replacement drivetrain components, they allow hobbyists to restore and tune the front drive when direct-fit graphite gears are required.

Compatibility and service advice: verify your model uses the MR-4TCSD front assembly, check gear mesh and bearing condition, and fit this set if worn or damaged gears cause slop or uneven engagement. Graphite gives stable dimensions that help maintain consistent mesh through normal maintenance cycles.

Fitment checklist: remove power and secure the chassis, follow the front drive disassembly procedure in your manual, clean the mating faces, install gears ensuring correct mesh and alignment with the front one-way or solid axle parts, and rotate by hand to confirm smooth operation before powering up at low throttle.

Setup impact: this service-level replacement helps keep tooth engagement consistent and supports tuning sessions where driveline feel and gear mesh are being adjusted.
Remark :
Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

What effect does graphite have on driveline feel?

Graphite maintains dimensional stability which helps preserve even tooth engagement, contributing to predictable driveline feel during tuning and repeated use.

Is graphite suitable for regular replacement gears?

Yes. Graphite is noted for stable dimensions under normal hobby use and suits service-level replacements where consistent mesh is a priority.

Do I need to change pinion or shims when fitting this set?

Check pinion alignment and existing shims when installing this set. Adjust shims as needed to achieve the correct gear mesh and avoid excessive backlash or tight spots.

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