Traxxas TRX-4 Center Gear Box Replacement - JR-TRX423-BK by Jazrider  [JR-TRX423-BK]

Traxxas TRX-4 Aluminum Center Gear Box (Black)
Price:
USD$34.84
Brand:
JAZRIDER
Model:
JR-TRX423-BK
Condition:
Brand New
Available in shop
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Aluminum center gear box option for the TRX-4

This center gear box is listed under part number JR-TRX423-BK, finished in black and made from aluminum. It is intended for use on Traxxas TRX-4 scale and trail crawler platforms where the center driveline housing is replaced for repair or tuning.

The unit houses the center gearset and provides the mounting interface between the transmission output and the TRX-4 front and rear driveshafts. Check chassis geometry and driveshaft alignment prior to fitting and use appropriate fastener torque to avoid thread damage.

Installation guidance: remove the original plastic housing, transfer required internal gears, spacers and bearings into this housing as necessary, maintain recommended gear lash for your TRX-4 gearset, and confirm alignment after assembly. This is supplied as an aftermarket hobby component.

Specifications

  • Item Center Gear Box (black)
  • Material Aluminum
  • Model Number JR-TRX423-BK
  • Compatibility Traxxas TRX-4

Use JR-TRX423-BK when replacing the TRX-4 central housing to obtain a metal alternative; always verify installation, alignment and gear setup for reliable performance.

Can I fit this to a modified TRX-4 chassis?

If your TRX-4 has aftermarket suspension or chassis modifications, compare mounting points and driveshaft geometry to ensure JR-TRX423-BK will fit; some modified layouts may require additional adjustments.

What should I transfer from the original housing?

Transfer internal gears, spacers and bearings that your build needs. Verify each component seats correctly in the JR-TRX423-BK housing before final assembly.

Does aluminum affect noise or wear?

Aluminum can change resonance characteristics and how loads are transmitted; monitor gear mesh and bearing behavior after installation and make adjustments if you notice unusual noise or wear patterns.

Any final checks after initial runs?

After initial operation, re-check gear mesh, inspect for play, and re-torque fasteners. Regular inspection will help ensure the housing performs reliably over time.