RC4WD Traxxas TRX-4 ARB Diff Cover (Black)

RC4WD Traxxas TRX-4 ARB Diff Cover (Black)
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The RC4WD Traxxas TRX-4 ARB Diff Cover is an officially licensed CNC machined upgrade that will add scale detail and style to your TRX-4 build. 


  • CNC Machined
  • Billet Aluminum
  • Smooth Black Anodized Finish
Width: 1.38in / 35mm
Length: 1.50in / 38mm
Height: 0.73in / 18.5mm
Weight: 0.48oz / 13.5g

  • (1) RC4WD ARB Diff Cover for Traxxas TRX-4 (Black)
  • (1) M1.6 x 4mm Steel Socket Head Cap Screw (Z-S1232)
  • (1) ARB Decal Sheet

This product was added to our catalog on October 4, 2018

Verified Owner
Monday, Mar 9 2020 (8 months ago)
RC4WD Traxxas TRX-4 ARB Diff Cover (Black)
Great scale detail with the miniature drain plug bolt. Entire unit looks very cool on the truck and definitely adds to that scale look over a typical brass diff cover.

One large issue. The first one I got was machined perfectly, however the second unit had the wrong machining on the big bearing side of the rear spool. Required significant grinding and reshaping with a rotary tool to get the bearing to sit properly (was 2-3mm too small in radius). I verified this by swapping to both axles, with both spools, multiple times, even swapped bearings around from front to rear to verify. RC4WD needs to address this.