MR-4TCSD Lightweight Gear Case for Tuning - YOKSD302G Yokomo  [YOKSD302G]

Yokomo SD-302G - MR-4TCSD Transmission Gear Case (Graphite) F/R
Price:
AUD$31.77
Brand:
Yokomo
Model:
YOKSD302G
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Tuning-Focused Gear Case Details

The YOKSD302G transmission gear case is a standard SD-series replacement crafted in graphite mixed resin to lower rotating mass while retaining the structural stiffness sought for competitive RC touring car setups.

The kit provides the main case and cap together with the screws needed for a direct swap on MR-4TCSD transmission assemblies without chassis modification. The graphite blended resin reduces weight but maintains stiffness where the case interfaces with bearings and the gearbox mount points.

When installing, double-check alignment of the input and output shafts and confirm bearing seating before final torque; fit the supplied screws and use measured torque to avoid distorting the resin. This item is for scale RC use only and not for real vehicle applications.

Packing includes

  • Transmission case Mission Case - 1 pcs
  • Transmission case cap Mission Cap Case - 1 pcs
  • 3 x 12mm tapping screw Tapping Screw - 4 pcs
  • 3 x 8mm plate tapping screw Flat Head Tapping Screw - 4 pcs

Specifications

  • Item Transmission gear case
  • Material Graphite mixed resin
  • Model Number YOKSD302G
  • Compatibility MR-4TCSD
  • Orientation F/R

The YOKSD302G gives MR-4TCSD drivetrains a lighter, stiffer housing to aid tuning; after fitting, recheck gear mesh and drivetrain running to ensure the best performance response.
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.

Will switching to this case affect gear mesh or response?

Yes, reducing case mass and raising stiffness can change drivetrain feel; always reestablish correct gear mesh after fitting and run-in gears at low speed to check for noise or binding.

Does the lighter case improve acceleration?

Lowering rotating and overall drivetrain mass can marginally improve transient response; changes are subtle but can benefit tuned setups when combined with correct gearing.

Any special setup when using this case for tuning?

Check bearing preload and shaft alignment, recheck gear mesh after a short run, and adjust mesh or shims as needed to remove any new drivetrain noise introduced by the stiffer housing.

Will this change require different maintenance intervals?

No drastic change is needed, but inspect bearing seats and screw torque after initial runs to confirm the resin case has settled and to avoid loosening under track use.

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