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

TRAXXAS TRX4 TRAIL CRAWLER Brass Rear Knuckle Arms Inner Case - 18pc set - GPM TRX4022BX
Price:
AUD$55.54
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 Summary

This brass inner case set is intended for the rear knuckle arms on TRAXXAS TRX4 Trail Crawler platforms. By replacing the stock plastic inner housing, the brass pieces increase rotating mass at each rear wheel and help stabilise the knuckle internal gear train for improved gear engagement while crawling slowly.

The kit provides the brass inner cases along with the stainless steel cap head screws needed for assembly, allowing a straightforward swap with original components. The added weight is aimed at improving wheel bite and keeping the knuckle gears running smoothly under load.

Install this aftermarket reinforcement to adjust rear-end behaviour on technical trails where extra hub mass helps preserve traction and smoother gear meshing. This part is a tuning upgrade and not a steering geometry modification.

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 neutral, install-first rear knuckle upgrade for TRX4 Trail Crawler owners chasing improved hub mass and more consistent knuckle gear action; check your chassis parts list for fitment confirmation.

What is included in the kit

Included are two brass rear knuckle inner cases plus the stainless steel cap head screws listed under Packing includes for direct replacement.

Will adding weight harm servo performance

The small increase in rotating mass at the hubs is intended for low-speed crawling and generally will not overload steering servos, but verify your servo spec if you run very light gear ratios.

Can I use these on both front and rear knuckles

This particular kit is specified for the rear knuckle arms; check product fitment details if you require front-side parts or a matching front kit.

Are the screws rust resistant

The supplied screws are stainless steel cap head types, which provides good corrosion resistance for typical trail use.

Copyright © 2008-2026 rcjaz.com.au All rights reserved