TRAXXAS TRX4 Rear Knuckle Inner Case Set 6pcs 6061 T6 TRX4022B by GPM  [TRX4022B]

TRAXXAS TRX4 TRAIL CRAWLER Aluminum Rear Knuckle Arms Inner Case - 6pc set - GPM TRX4022B
Price:
£14.19
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"

Rear knuckle inner case set for TRX4 crawlers

This 6pcs rear knuckle inner case kit is built for the TRAXXAS TRX4 Trail Crawler platform to enhance drivetrain stability on technical terrain. CNC machined from 6061 T6 aluminium, each inner case provides a firm support for the inner gear stack inside the rear knuckle arms during low-speed crawling.

By restricting lateral play in the rear knuckle gear stack the inner cases help the gearbox meshes remain steady while the suspension articulates. That stabilising effect reduces gear lash and supports more consistent tooth engagement when crawling over irregular surfaces on TRX4 chassis.

Kit hardware: stainless steel cap head screw 2.5x8 - 4pcs included to secure internal parts. The set contains six aluminium knuckle inner cases to equip the rear 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

These aluminium inner cases are a practical chassis-level upgrade to reduce drivetrain slop and maintain gear alignment for UK-style rock and trail crawling on TRX4 vehicles.

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

Will this improve steering precision on climbs?

Improved gear alignment can lead to steadier drivetrain behaviour and slightly better low-speed control, but steering precision is also influenced by servo setup and tyre choice.

Are the screws captive or separate?

The kit includes four loose stainless steel cap head screws (2.5x8) supplied separately for assembly into the knuckle internals.

Do these require shims for correct mesh?

Most installations will not need additional shims; always verify gear mesh across full suspension travel and add thin shims only if binding or excessive play is observed.

Is any additional lubrication recommended?

Keep the gears and bearings lubricated per manufacturer guidance; the aluminium housing itself does not replace routine gear maintenance.

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