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2PCS Brass Portal Cover Weight Knuckle Weights Rings for 1/10 RC Crawler TRX4 TRX-4 Defender Bronco TRX6 G63

2PCS Brass Portal Cover Weight Knuckle Weights Rings for 1/10 RC Crawler TRX4 TRX-4 Defender Bronco TRX6 G63

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Specifications

Brand Name
Fimonda
Four-wheel Drive Attributes
TRX4 Knuckle
Wheelbase
Screws
Recommend Age
14+y
Size
80g each piece
RC Parts & Accs
AXLE
For Vehicle Type
Cars
Material
Metal
Use
Vehicles & Remote Control Toys
Certification
None
Origin
Mainland China
Upgrade Parts/Accessories
Brass Portal Cover
Remote Control Peripherals/Devices
Brass Weight
Tool Supplies
Assembled class
Model Number
for Traxxas TRX4 TRX6
Quantity
2
Technical parameters
value 2
Choice
yes
semi_Choice
yes

Product Description



Features:

Add 80g weight to the wheels each, which lower the vehicle's gravity and increase the stability.
Greatly help to the wheels grabbing for the vehicle more capable crawler.
Precise dimension control to make it easy to install the bearings, and run smoothly.
High quality CNC machined brass material.
Fit stock Traxxas plastic portal axle
Fit stock TRX4/TRX6 original wheel, or the other wheel whose the inter diameter is bigger than 40mm

Specification:
Brass Portal Knuckle Weight Rings
Material: High Quality Brass
Fit stock Traxxas plastic portal axle
Weight: 80g/pcs, Total weight: 160g
Included hardware

After-Sales Service:

>Please kindly contact us for any manufacture quality or install issue, we will answer within 24 hours.
>We provide free replacement or 100% refund for any quality issue.

 

 

Pros & Cons

Pros

  • CNC machined brass construction for precise fit and long-lasting durability
  • Each piece adds 80g of weight to boost RC crawler stability and crawling capability
  • Precise dimensioning for easy bearing installation and smooth operation
  • Fits a wide range of popular 1/10 scale RC crawler models

Cons

  • Only compatible with specific 1/10 scale RC crawlers, not all RC vehicles
  • Added weight will reduce overall top speed for on-road use
  • No installation tools or instructions are included in the listing
  • Brass material may tarnish over time if exposed to moisture without proper care

Common Questions

How much total weight do these 2 portal cover weights add?

Each piece weighs 80g, so the 2-piece set adds 160g total to your RC crawler.

Which RC crawler models are these weights compatible with?

They are designed for 1/10 scale RC crawlers including Traxxas TRX-4, TRX-4 Defender, Bronco, and TRX6 G63.

What material are these upgrade parts made from?

They are constructed from high-quality CNC machined brass for durability.

What is the purpose of these portal cover weights?

These weights lower the vehicle's center of gravity to increase stability and improve wheel traction for better crawling performance.

How many pieces are included in this purchase?

This listing includes 2 brass portal cover weight pieces.

Product information last updated on November 19, 2025