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

TRAXXAS TRX4 TRAIL CRAWLER Brass Rear Knuckle Arms Inner Case - 18pc set - GPM TRX4022BX
Price:
CAD$55.11
Brand:
GPM
Model:
TRX4022BX
GTIN:
4894538344134
Condition:
Brand New
Write a review
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"
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"

Product Overview

This brass inner case kit is made to fit the rear knuckle arms on TRAXXAS TRX4 Trail Crawler vehicles. It swaps the stock plastic inner housing for brass units to add rotating mass at each rear wheel and to steady the knuckle internal gear train for improved low-speed traction control.

The kit includes the inner cases and the stainless steel cap head screws required for installation, enabling a direct replacement of the original plastic housings. The added mass at the wheel hub is intended to increase wheel bite and keep the knuckle gears running more consistently under load.

Use this aftermarket tuning piece to tweak rear-end behaviour on technical trails where extra weight at the hubs helps maintain traction and smoother gear meshing. This is an upgrade item for TRX4-series trail rigs and not a steering geometry change.

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 straightforward, install-focused rear knuckle upgrade for TRX4 Trail Crawler owners who want added hub mass and steadier knuckle gear behaviour; confirm compatibility with your build before fitting.

What comes in the box

The package contains two brass rear knuckle inner cases and the stainless steel cap head screws listed under Packing includes for direct assembly.

Does this fit all TRX4 variants

Refer to the Compatible Models box for the exact model string provided by the supplier and double-check against your vehicle part numbers before purchase.

How will it change crawling performance

The extra rotating mass helps wheels maintain momentum and encourages steadier gear engagement during slow technical crawls, improving traction in low-traction situations.

Are all screws included for installation

Yes, the stainless steel cap head screws in the listed sizes and quantities are supplied for direct replacement of the original housings.

Copyright © 2008-2026 rcjaz.ca All rights reserved