TRAXXAS TRX4 Trail Crawler Brass Pendulum Wheel Knuckle Axle Weight with 23mm Hex Adapter by GPM TRX4023XX  [TRX4023XX]

Brass Pendulum Wheel Weights for TRX4

This is an RC-scale pendulum wheel weight set designed for TRAXXAS TRX4 trail crawlers to increase wheel-end mass and lower the effective center of gravity for improved low-speed traction. The assembly uses a brass pendulum weight shaped narrower at the top and wider at the bottom, running on a bearing with a Delrin collar to keep the weight hanging downward through a wide range of wheel angles. The intent is to help a crawler regain traction when digging into uneven or low-lying terrain and to allow larger crawl angles without losing contact.

Installation targets the outer drive portal area and requires wheels with an inner diameter of 45mm and a wheel thread hole of 5mm. The 23mm hex adapter included in the kit is significantly wider than the stock hex to provide the additional offset needed for this pendulum design. The single pendulum plus hex assembly weighs 133 grams and is intended to be fitted as an aftermarket upgrade on RC crawler wheel hubs only.

Use these brass pendulum weights when you need added wheel-end mass to stabilise slow-speed crawling, increase grip on steep or uneven sections, and permit greater approach angles without slipping; confirm wheel bore and thread compatibility before fitting.