GPM Racing Brass Pendulum Wheel Knuckle & 9mm Hex Adapter 16 Piece RC Axle Weight - GPM-TRX4023X

The GPM Racing TRX4023X Brass Pendulum Wheel Knuckle Axle Weight and 9mm Hex Adapter set is a 16-piece brass upgrade kit designed for the Traxxas TRX-4 crawler. Brass weighting is a popular modification for scale crawlers because it lowers the centre of gravity and adds mass to the axle ends, improving traction and stability over technical terrain without altering the vehicle's geometry. This set combines pendulum-style knuckle axle weights with 9mm hex adapters, making it a functional and purposeful upgrade for TRX-4 owners looking to improve crawling performance.

Key Features

• Machined from brass to add meaningful weight at the wheel knuckle and axle ends, where it has the greatest effect on traction
• Pendulum-style design positions weight low and outboard for improved stability on uneven or technical crawling terrain
• Includes 9mm hex adapters, combining weight and wheel fitment into a single integrated upgrade
• 16-piece set covers both axles for a complete front and rear installation
• Brass construction resists corrosion and provides a durable, long-wearing finish suited to outdoor crawling use

What's Included

• Brass pendulum wheel knuckle axle weights
• 9mm hex adapters
• 16 pieces total

What You Need

• Traxxas TRX-4 crawler (sold separately)
• Basic RC hand tools for installation (hex drivers, spanners as required by your specific TRX-4 build)