Overview
Build a complete low-CG front-end system on your Traxxas TRX-4 with the Hot Racing CNC Solid Brass Modular Steering Knuckles & Portal Gear Cover. CNC-machined from solid brass, this direct-replacement knuckle and portal gear cover assembly puts substantial low-mounted weight directly at the wheels — exactly where you want it for maximum climbing performance and side-hill stability on a scale crawler.
The "modular" design is key: it accepts optional add-on weights that bolt directly to the knuckle (such as the Hot Racing 47g inner knuckle weights), letting you build up the front-end weight incrementally to your exact preference. Three different rotated mounting positions also let you fine-tune weight distribution for personalized chassis behavior.
Key Features
- CNC-machined solid brass construction
- Modular design accepts optional add-on weights
- Three rotated mounting positions for weight distribution tuning
- Direct replacement for factory plastic steering knuckles / portal gear cover
- Maximum scale and crawling performance
Performance Benefits
- Significantly improved climbing performance
- Better side-hill stability and composure
- Modular weight options for personalized tuning
- Three mounting positions for weight distribution control
- Solid brass durability and lasting performance
Usage Notes
Apply removable thread-locker on screws threading into metal during installation. Use the three rotated mounting positions to fine-tune weight distribution — try each position and evaluate handling differences. Optional add-on weights (sold separately) can be bolted on to further increase front-end mass for maximum climbing performance.
Technical Specs
- Material: CNC-machined solid brass
- Design: Modular knuckle / portal gear cover
- Mounting Positions: Three rotated positions
- Function: Steering knuckle and portal gear cover
- Compatibility: Accepts Hot Racing modular add-on knuckle weights
What's Included
- Modular brass steering knuckles / portal gear cover assembly
- Mounting hardware
Fitment
- Traxxas TRX-4 (1/10 scale)
- Direct replacement for factory plastic steering knuckles / portal gear cover
- Accepts Hot Racing 47g modular inner knuckle weight add-ons
Summary
The Hot Racing CNC Solid Brass Modular Steering Knuckles & Portal Gear Cover is the foundation of a serious low-CG TRX-4 build. Modular, tunable, and built to deliver maximum climbing performance — start here and add weights as your build evolves.
