TRAXXAS TRX4 Aftermarket Pendulum Wheel Weight Kit TRX4023A by GPM  [TRX4023A]

Weight bias pendulum kit for off-road crawling

This 24 piece kit is built for TRAXXAS TRX4 trail crawlers to introduce rotating mass at each wheel and enhance low-speed control. The assembly combines stainless steel rolling beads inside aluminium outer cases and widened 6mm hex adapters so weight shifts lower as wheels spin, aiding tyre contact on rocks, mud and ruts.

The pendulum mechanism allows the inner mass to swing and stay oriented downward, offering a consistent downward bias rather than a fixed dead weight. That effect is useful when a wheel digs in or needs extra force to climb out of a hollow by increasing downward pressure where the tyre meets the ground while rotating.

Fitting targets the front and rear outer case sections of compatible knuckles and uses the supplied stainless screws and widened hex adapters; this is presented as an aftermarket GPM upgrade compatible with TRX4 style knuckles, not an original equipment replacement.

For rock gardens and muddy trail sections, this GPM pendulum set provides rotating mass that helps keep tyres loaded at low speeds by fitting to the knuckle outer cases on TRX4 style rigs.