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

Pendulum knuckle weights engineered for TRX4 crawling

This aftermarket kit provides pendulum-style wheel knuckle weights designed for TRAXXAS TRX4 Trail Crawler platforms. The assembly places concentrated mass at the outer knuckle to encourage downward force on the wheel during slow-speed crawling, helping wheels seat into low spots and maintain traction on uneven or muddy sections of trail.

The unit pairs an aluminum body with a brass lid and stainless steel rolling beads as listed in the source notes, and includes a wider 9mm hex adapter for a secure fit. The pendulum mechanism lets the weight self-adjust vertically so the added mass tracks downward toward the ground rather than shifting balance rigidly across the chassis.

Fitment is at the outer case of the front and rear wheel knuckles where these pendulum weights bolt in place of or alongside stock hardware. The kit ships with multiple fasteners and shims so the assembly can be fitted, and the 16 piece set covers all four wheels plus spares as listed in the items. In tuning terms this part increases per-wheel downward load, reduces wheel lift during extreme articulation, and helps fine tune front to rear balance for slower crawl speeds.

Fit this kit when you need increased wheel bite and a steadier slow-speed crawl feel on a TRX4 chassis, especially in muddy or low-lying trail conditions where extra downward force helps each tyre find and keep ground contact.