TRAXXAS TRX4 Axle Housing Brass Covers TRX4012AX by GPM  [TRX4012AX]

TRAXXAS TRX4 TRAIL CRAWLER Brass Front/Rear Gearbox Cover - 5pc set - GPM TRX4012AX
Price:
NZD$48.43
Brand:
GPM
Model:
TRX4012AX
GTIN:
4894538295030
Condition:
Brand New
1 Reviews
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alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Front/Rear Gearbox Cover - 5pc set - GPM TRX4012AX" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Front/Rear Gearbox Cover - 5pc set - GPM TRX4012AX"
alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Front/Rear Gearbox Cover - 5pc set - GPM TRX4012AX" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Front/Rear Gearbox Cover - 5pc set - GPM TRX4012AX"
alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Front/Rear Gearbox Cover - 5pc set - GPM TRX4012AX" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Front/Rear Gearbox Cover - 5pc set - GPM TRX4012AX"
alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Front/Rear Gearbox Cover - 5pc set - GPM TRX4012AX" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Front/Rear Gearbox Cover - 5pc set - GPM TRX4012AX"
alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Front/Rear Gearbox Cover - 5pc set - GPM TRX4012AX" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Front/Rear Gearbox Cover - 5pc set - GPM TRX4012AX"

Scale brass gearbox caps

This set is a scale aftermarket brass front and rear gearbox cover tailored for the TRAXXAS TRX4 Trail Crawler. The components provide stout protection for axle housings and help stabilise the differential during technical rock and trail sections.

Key features from the maker include a built-in oil filler hole for simpler servicing, CNC-level fit tolerances to support correct differential placement, and a precise mass of 76g that gives predictable ballast to the axle. The kit also contains stainless steel cap head screws 2.5x14, 4pcs for secure mounting.

Fitment and tuning: the covers supersede the stock axle housing caps on TRX4-compatible axle cases and act as a rigid backing to reduce flex under load, assisting in maintaining gear mesh and smooth differential function at crawling speeds. This product is for 1:10 scale RC use only.

Compatible Models

  • Suitable for original axle case

Install these brass covers when you need reinforced axle caps with easy oil access and consistent weight for tweaking TRX4 axle characteristics on demanding courses.

 

Product Reviews
1 Reviews
rating
Parts are very nice. Fit very well. Easy to install. But screws are sometimes to short. And piece was not drilled and tapped deep enough. But overall excellent workmanship. Your shipping leaves a lot to be desired. And it seems tha you got a little confus

What parts come in the kit?

The kit contains both front and rear brass gearbox covers plus four stainless steel cap head screws 2.5x14 for mounting to the axle housing.

Is any machining required to fit them?

No major machining is expected; the parts are made to CNC tolerances for drop-in fit on original TRX4 axle cases, but verify fitment and clearances before final assembly.

Can I adjust differential oil without removal?

Yes, the integrated filler port allows topping up differential oil in the field without removing the entire cover, simplifying maintenance between runs.

Will these help with gear protection?

The brass covers add a robust external cap that reduces housing deformation under load, which can help maintain gear mesh and reduce wear during slow-speed crawling.

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