Overview
Add low-mounted weight and bulletproof durability to your Traxxas TRX-4 with the Hot Racing CNC Solid Brass 41g Steering Knuckle Portal Gear Cover. CNC-machined from solid brass, this direct-replacement portal gear cover adds 41g (1.4 oz) of weight per side at the lowest possible point on the chassis — exactly where you need it for improved climbing stability and side-hill composure.
Compared to the heavier 76g and "super heavy" brass knuckles, this 41g version offers a more moderate weight gain — perfect for drivers who want noticeable low-CG benefits without going to the extreme weight of the heaviest options. It's a smart middle-ground upgrade for serious scale drivers.
Key Features
- CNC-machined solid brass construction
- 41g per knuckle for moderate low-CG weight gain
- Improves chassis stability and weight distribution
- Direct replacement for factory plastic steering knuckles / portal gear cover
- Long-lasting brass durability
Performance Benefits
- Lower center of gravity for better stability
- Improved climbing performance
- Better side-hill composure
- Solid brass construction outlasts plastic stock parts
- Moderate weight gain — noticeable benefit without going extreme
Usage Notes
Apply removable thread-locker on screws threading into metal during installation. Best installed on the front knuckles for climbing performance, but can also be installed on the rear for additional rear-end stability. Pair with brass diff covers and other low-CG upgrades for maximum effect.
Technical Specs
- Material: CNC-machined solid brass
- Weight: 41g (1.4 oz) each
- Function: Steering knuckle / portal gear cover
- Compatibility: Traxxas TRX-4 portal axles
What's Included
- Two (2) solid brass knuckle portal gear covers
- Mounting hardware
Fitment
- Traxxas TRX-4 (1/10 scale)
- Front (typical) or rear application
- Direct replacement for factory plastic steering knuckles / portal gear cover
Summary
The Hot Racing CNC Solid Brass 41g Knuckle Portal Gear Cover is the right choice for TRX-4 drivers who want meaningful low-CG benefits without going to the heaviest brass options. Bolt them on for noticeable handling improvements and lasting brass durability.
