TRAXXAS TRX4 Rear Knuckle Brass Inner Case Precision Upgrade TRX4022BX by GPM  [TRX4022BX]

TRAXXAS TRX4 TRAIL CRAWLER Brass Rear Knuckle Arms Inner Case - 18pc set - GPM TRX4022BX
Price:
USD$39.90
Brand:
GPM
Model:
TRX4022BX
GTIN:
4894538344134
Condition:
Brand New
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alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Rear Knuckle Arms Inner Case - 18pc set - GPM TRX4022BX" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Rear Knuckle Arms Inner Case - 18pc set - GPM TRX4022BX"
alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Rear Knuckle Arms Inner Case - 18pc set - GPM TRX4022BX" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Rear Knuckle Arms Inner Case - 18pc set - GPM TRX4022BX"
alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Rear Knuckle Arms Inner Case - 18pc set - GPM TRX4022BX" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Rear Knuckle Arms Inner Case - 18pc set - GPM TRX4022BX"

Technical Overview

This precision brass inner case assembly is designed for the rear knuckle arms of TRAXXAS TRX4 Trail Crawler platforms. The brass inner housings replace the original plastic parts to increase rotating mass at the rear wheels and provide a more stable running environment for the knuckle internal gear train, enhancing steady gear engagement during low-speed manoeuvres.

The kit is supplied with the stainless steel cap head screws required for fitting, allowing direct replacement of the factory housings. The brass components add hub mass to assist wheel bite and reduce transient gear disengagement under crawl loads.

Intended as an aftermarket reinforcement, this part is used to tune rear-end behaviour on technical terrain where added hub weight supports traction and smoother gear meshing. It does not modify steering geometry and should be fitted after confirming clearance and compatibility with the vehicle's knuckle assembly.

Packing includes

  • Brass Rear Knuckle Arms Inner Case - 2pcs
  • Stainless Steel Cap Head Screw 2.5*16 - 14pcs
  • Stainless Steel Cap Head Screw 2.5*8 - 4pcs

Original Name / Part No:

Stabilize the inner gears of the rear knuckle arms to ensure the gears are running smooth

Compatible Models

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

A precision brass inner case solution focused on improving hub mass distribution and stabilising knuckle gear engagement for TRX4 Trail Crawler applications; confirm fitment prior to installation.

What does this kit include and why

The kit includes two brass inner cases and the specified stainless steel cap head screws to allow direct replacement of the stock plastic housings and to add rotational mass at the hubs for improved gear stability.

How does added hub mass affect gear engagement

Increased hub mass helps maintain wheel momentum during slow crawls, reducing gear micro-slip and promoting more consistent meshing in the knuckle internal gear train under variable load.

Any installation notes for technicians

Ensure correct screw torque and check for clearance with seals and bearings during installation. Verify gear mesh and knuckle rotation before trail use.

Compatibility and fit checks

Confirm the compatibility list in the Compatible Models box and inspect your knuckle assembly dimensions against the brass inner case to ensure correct fitment.