TRAXXAS TRX4 Precision Brass Outer Portal Drive Housing 18pcs TRX4021XB by GPM  [TRX4021XB]

TRAXXAS TRX4 TRAIL CRAWLER Brass Outer Portal Drive Housing (Front Or Rear) heavy Edition - 18pc set - GPM TRX4021XB
Price:
USD$61.90
Brand:
GPM
Model:
TRX4021XB
GTIN:
4894538344127
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alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Outer Portal Drive Housing (Front Or Rear) heavy Edition - 18pc set - GPM TRX4021XB" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Outer Portal Drive Housing (Front Or Rear) heavy Edition - 18pc set - GPM TRX4021XB"
alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Outer Portal Drive Housing (Front Or Rear) heavy Edition - 18pc set - GPM TRX4021XB" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Outer Portal Drive Housing (Front Or Rear) heavy Edition - 18pc set - GPM TRX4021XB"
alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Outer Portal Drive Housing (Front Or Rear) heavy Edition - 18pc set - GPM TRX4021XB" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Outer Portal Drive Housing (Front Or Rear) heavy Edition - 18pc set - GPM TRX4021XB"
alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Outer Portal Drive Housing (Front Or Rear) heavy Edition - 18pc set - GPM TRX4021XB" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Outer Portal Drive Housing (Front Or Rear) heavy Edition - 18pc set - GPM TRX4021XB"

Precision brass outer portal housing for TRX4 portal systems

This 18-piece set contains CNC-friendly brass outer portal housings engineered for TRX4-style portal hub assemblies. The design purpose is to increase wheel-end mass for enhanced low-speed traction and improved recovery from digs while maintaining reliable mounting using the supplied stainless steel cap head screws.

Material and role: solid brass construction increases unsprung weight at the wheel ends compared with alloy or thermoplastic housings, delivering measurable changes in crawl behaviour. Use the manufacturer-supplied weight notes as a reference and verify exact values on your own measurement tools during build and setup.

Fit and installation: housing outer diameter is 43mm and requires wheel inner clearance exceeding 43.5mm. Confirm wheel internal bore and hub stack tolerances before installation and verify that screw lengths provide correct thread engagement without bottoming out.

Packing includes

  • BRASS OUTER PORTAL DRIVE HOUSING - 2pcs
  • Stainless Steel Cap Head Screw 2.5*10 - 12pcs
  • Stainless Steel Cap Head Screw 2.5*8 - 4pcs

Original Name / Part No:

Made by brass to increase the weight of each wheel of 182 grams to stabilize the wjeel,enlarge the angle of crawling ,especially when the car is dig into the low lying area landspace ,grab the ground firmly and smoothly drive back to level.

Compatible Models

  • TRAXXAS-1/10 TRX4 TACTICAL UNIT-82066-4
  • FORD BRONCO 82046-4
  • BLAZER 82076-4
  • MERCEDES-BENZ G500TRX-6
  • MERCEDES-BENZ-88096-4

Before full installation, confirm wheel inner bore >43.5mm and trial-fit with the supplied 2.5mm screws to verify engagement and clearance; validate handling changes and rework suspension settings where necessary.

What dimensional checks should I perform before fitting?

Measure wheel inner bore to ensure it exceeds 43.5mm, confirm hub stack spacing and verify axle thread engagement lengths to prevent interference or stripped threads.

Which fasteners are supplied and where are they used?

The package includes stainless steel cap head screws: 12 x 2.5x10mm and 4 x 2.5x8mm, intended for securing the brass outer housings to the portal hub flange as shown in typical assembly stacks.

How does the added mass affect tuning priorities?

Added wheel-end mass increases unsprung weight and changes damping requirements; expect to reassess shock oil, spring rate and steering centring to maintain predictable trail performance.

Is machining or modification required for fitment?

No machining is typically required for compatible TRX4 portal systems, though clearance checks and potential minor wheel bore adjustments may be necessary depending on aftermarket wheel designs.