TRAXXAS TRX4 Pendulum Wheel Weight Upgrade TRX4023B by GPM  [TRX4023B]

Pendulum-style wheel weights tailored for TRX4 crawling

This aftermarket kit fits TRAXXAS TRX4 Trail Crawler vehicles and supplies pendulum-style wheel knuckle weights that add concentrated mass to the outer knuckle, promoting downward force during low-speed crawling so tyres better settle into ruts and grab uneven terrain.

The assembly combines an aluminium body with a brass lid and stainless rolling beads as noted in the product details, and includes a beefed-up 9mm hex adapter for reliable mounting. The pendulum allows the mass to follow suspension movement and track downward toward the ground instead of shifting the whole chassis balance.

Install the units on the outer housing of front and rear wheel knuckles where they replace or complement stock hardware. The kit comes with various screws and shims for fitting, and the 16 piece set supplies enough components for all four wheels plus spare parts. In tuning practice this upgrade increases individual wheel downward load, reduces wheel lift during extreme articulation, and helps dial in front to rear balance for careful crawling.

Use these pendulum weights when you want more predictable wheel bite and improved low-speed stability on a TRX4 chassis, particularly on wet or rutted trails where extra downforce helps maintain traction.