TRAXXAS TRX4 Rear Knuckle Inner Case 6pc CNC 6061 T6 TRX4022B by GPM  [TRX4022B]

TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B
Price:
USD$18.90
Brand:
GPM
Model:
TRX4022B
GTIN:
4894538285383
Condition:
Brand New
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alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B"
alt="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B" title="TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B"

Precision CNC aluminium inner cases for TRX4 rear knuckles

This 6pcs rear knuckle inner case kit is engineered specifically for the TRAXXAS TRX4 Trail Crawler platform to improve drivetrain stability under articulation. Manufactured from 6061 T6 aluminium and CNC machined to tight tolerances, each case provides a rigid bearing surface that maintains concentric alignment of the inner gear stack within the rear knuckle arms during low-speed crawling and technical manoeuvres.

Functionally, these precision inner cases reduce lateral play in the rear knuckle gear stack so gear meshes remain consistent as the suspension cycles. The increased structural stiffness lowers unwanted gear lash and supports repeatable tooth engagement, which matters for predictable crawl performance and long-term drivetrain reliability.

Supplied hardware: stainless steel cap head screw 2.5x8 - 4pcs for securing internal components. The kit ships as six aluminium knuckle inner cases to equip both rear knuckle assemblies.

Specifications

  • Item: Rear knuckle inner case set
  • Material: 6061 T6 aluminum
  • Model Number: TRX4022B
  • Compatibility: TRAXXAS TRX4 Trail Crawler
  • Quantity: 6 pcs
  • Included Hardware: Stainless steel cap head screw 2.5x8 - 4pcs
  • Manufacturing: CNC machined

Use these CNC aluminium inner cases where precision alignment and reduced drivetrain slop are required for demanding rock crawling and trail applications on TRX4 chassis; they are a measured upgrade that focuses on rigidity and repeatable fitment.

This item is compatible with

  • TRAXXAS TRX4 Defender Trail Crawler

 

Product Reviews
1 Reviews
rating
The quality is good and both the delivery and the reception of the order, fast. I can not give more stars, because the price of each component is high, the cost of shipping very high, discounts for good customer null, and generic discounts, to use only

What tolerance control is used on these parts?

Components are CNC machined from 6061 T6 with a focus on consistent bore and mating surfaces to ensure repeatable gear alignment in the rear knuckle assembly.

Do these replace internal bearings or just the housing?

These inner cases act as a rigid housing for the inner gear stack and do not replace bearings; inspect bearings separately and fit per service intervals.

Is heat treatment applied to the aluminium?

Material specification is 6061 T6, which provides a balance of strength and machinability for durable housings in typical crawling conditions.

Any special assembly notes for alignment?

During assembly verify gear mesh across full suspension travel, torque screws to recommended values, and confirm there is no binding; adjust as needed for optimal engagement.