Traxxas TRX-4 Lower Gear Cover 6061 Aluminium for Defender and Tactical Unit TRX4038BA by GPM  [TRX4038BA]

TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA
Price:
£33.21
Brand:
GPM
Model:
TRX4038BA
GTIN:
4894538308068
Condition:
Brand New
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alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Lower Gear Cover - 13pc set - GPM TRX4038BA"

6061 aluminium lower transmission cover for TRX-4

This scale lower transmission cover is intended for Traxxas TRX-4 vehicles to protect the centre gearbox and provide a rigid underbody mounting surface. Crafted from 6061 aluminium with a hollowed CNC profile, the cover reduces mass while presenting metal to aid passive cooling.

The cover reinforces the transmission area to reduce chassis flex and stabilise suspension link mounts during technical crawling. It is designed for hobby RC vehicles and is not suitable for any full-size application.

The kit includes replacement hardware for a direct swap of the standard lower transmission cover, securing the part to the existing mounting points on compatible TRX-4 variants.

  • Transmission Case Lower Cover - 1 pcs
  • Stainless Steel Round Head Screw 3x25 - 2 pcs
  • Stainless Steel Round Head Screw 3x16 - 4 pcs
  • Stainless Steel Round Head Screw 3x10 - 4 pcs
  • Stainless Steel Round Head Screw 3x8 - 2 pcs

Compatible Models

  • Traxxas TRX-4 Defender
  • TRX-4 Tactical Unit

Use this 6061 aluminium lower cover where extra gearbox protection, improved chassis rigidity and passive heat dispersion are wanted; the included fasteners enable straightforward installation on the models listed above.

Is this compatible with non-listed TRX-4 variants?

Compatibility is confirmed for the TRX-4 Defender and TRX-4 Tactical Unit in the compatibility box. Other variants may fit if the lower mounting layout matches, but check before fitting.

What are the advantages of the CNC hollowed design?

The hollow CNC profile reduces weight while retaining stiffness and exposes aluminium to ambient air for improved passive cooling of the transmission area.

Are the screw sizes standard?

Yes. The kit includes stainless screws in sizes 3x25, 3x16, 3x10 and 3x8 to match the original lower cover mounting holes.

Should I change my suspension setup after fitting?

Because the cover increases lower chassis stiffness, it can affect link behaviour. Verify link geometry and ride height after installation and make small adjustments as required.

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