TRAXXAS TRX4 Pendulum Knuckle Weight Precision Kit TRX4023B by GPM  [TRX4023B]

Precision pendulum knuckle weights for TRX4 crawling

This aftermarket kit supplies pendulum-style wheel knuckle weights for TRAXXAS TRX4 Trail Crawler platforms, designed to concentrate mass at the outer knuckle to promote downward force during slow articulation and improve traction in low spots.

The assembly uses a CNC-friendly aluminium body paired with a brass lid and stainless steel rolling beads, plus a reinforced 9mm hex adapter for positive mounting. The pendulum mechanism allows the weight to self-adjust vertically so the added mass follows suspension motion and tracks toward the ground.

Installation is on the outer case of front and rear wheel knuckles where the weights bolt on in place of or alongside stock hardware. The 16 piece kit includes multiple fasteners, spacers and shims to achieve secure fitment and setup. In tuning terms this component increases per-wheel downward load, reduces wheel lift during extreme articulation and enables fine tuning of front to rear balance for precise slow-speed crawl performance.

Use this precision kit when optimising wheel bite and slow-speed stability on a TRX4 chassis, particularly for technical crawling where controlled downward load improves traction repeatability.