TRAXXAS TRX4 Trail Crawler Pendulum Weight Assembly TRX4023B by GPM  [TRX4023B]

Pendulum wheel knuckle weights suited to TRX4 trail use

This aftermarket kit fits TRAXXAS TRX4 Trail Crawler chassis and supplies pendulum-style wheel knuckle weights that add focused mass to the outer knuckle, encouraging wheels to push downward during slow-speed articulation so they settle into depressions and keep traction on uneven ground.

The design uses an aluminium body with a brass lid and stainless steel rolling beads as detailed in the notes, and it includes a widened 9mm hex adapter to secure the assembly. The pendulum mechanism permits the added mass to self-align vertically so it moves toward the ground as suspension articulates rather than shifting overall chassis balance.

The units mount to the outer case of front and rear wheel knuckles where they bolt on in place of or together with stock hardware. The kit includes a variety of screws, shafts and shims for fitting, and the 16 piece set covers all four wheels plus spare parts as listed. For tuning this component increases per-wheel downward load, reduces wheel lift under heavy articulation and helps refine front to rear balance at crawl speeds.

Install this kit when you want stronger tyre bite and a more controlled low-speed crawl response on TRX4 rigs, especially across muddy or technical trail where extra downforce helps wheels maintain ground contact.