TRAXXAS TRX4 Trail Crawler Adjustable Aluminum Front C Hub by GPM TRX4019A  [TRX4019A]

Adjustable aluminum front C hub for TRX4

This is an RC-scale adjustable front C hub kit designed for TRAXXAS TRX4 Trail Crawler setups. It replaces the stock plastic C-hubs and hardware with aluminum 6061 T6 components, Delrin collars, and stainless steel king pins to provide a firmer steering joint and repeatable damper positioning. The set is sold as a 28pcs kit and is intended to be used on scale trail rigs only.

The kit's role in tuning is focused on steering geometry and damper mounting position. By changing the C-hub assembly and the number of Delrin collars used at each damper mount, the damper angle and effective ride height can be adjusted. The product shifts the damper mounting slightly outward compared with the original vertical damper orientation, which alters lateral support and allows incremental height adjustment through collar stacks.

Installation notes derived from the provided hardware list:

• Assemble the C-hubs and knuckle connection using the supplied king pins and stainless screws, keeping components clean and lightly greased where metal contacts metal.
• Use round head screws 3x18 (2 pcs) when attaching tie rods if you adopt the modified tie rod-to-damper connection detailed in the kit notes.
• Dampers mounting screw length depends on collar count: without collar use 3x14, with 1 collar use 3x16, with 2 collars use 3x18, with 3 collars use 3x20; verify thread engagement and avoid over-tightening.
• Confirm steering link geometry after installation to prevent binding and ensure full throw compatibility with your servo and steering stops.

Use this aluminum C-hub kit to replace stock plastic parts for a more stable steering pivot and to gain adjustability in damper positioning; verify fit and steering geometry during installation and test incrementally on the trail rig.