---
product_id: 664592909
title: "AMK 216.4g Brass TRX4M Axle, Extended 20mm TRX4M Portal Axle, TRX4M Brass Axle with Two Servo Mount Options, for 1/18 RC CrawlerCar TRX4M Axle Upgrade Parts"
brand: "amk"
price: "€ 156.21"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/664592909-amk-216-4g-brass-trx4m-axle-extended-20mm-trx4m-portal
store_origin: HR
region: Croatia
---

# 20mm Extended 216.4g Brass 3.67:1 Gear Ratio AMK 216.4g Brass TRX4M Axle, Extended 20mm TRX4M Portal Axle, TRX4M Brass Axle with Two Servo Mount Options, for 1/18 RC CrawlerCar TRX4M Axle Upgrade Parts

**Brand:** amk
**Price:** € 156.21
**Availability:** ✅ In Stock

## Summary

> 🚙 Unleash the Beast Within Your RC Crawler!

## Quick Answers

- **What is this?** AMK 216.4g Brass TRX4M Axle, Extended 20mm TRX4M Portal Axle, TRX4M Brass Axle with Two Servo Mount Options, for 1/18 RC CrawlerCar TRX4M Axle Upgrade Parts by amk
- **How much does it cost?** € 156.21 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/664592909-amk-216-4g-brass-trx4m-axle-extended-20mm-trx4m-portal)

## Best For

- amk enthusiasts

## Why This Product

- Trusted amk brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **⚖️ Lightweight Yet Sturdy:** Weighing in at just 216.4g, these axles offer a perfect balance of strength and agility.
- • **🚀 Elevate Your Crawler Game:** Upgrade your TRX4M with precision-engineered brass axles for enhanced durability and performance.
- • **🔄 Versatile Mounting Options:** Includes two servo mount configurations for ultimate customization—horizontal and vertical.
- • **⚙️ Optimized Gear Performance:** Features a robust 3.67:1 axle gear ratio for superior torque and control on rugged terrains.
- • **📏 Wider Stance, Better Stability:** Increases axle width by 10mm per side, providing a total extension of 20mm for improved handling.

## Overview

The AMK 216.4g Brass TRX4M Axle is a high-performance upgrade for 1/18 RC CrawlerCars, featuring an extended 20mm design, dual servo mount options, and optimized gear ratios for enhanced stability and control. Crafted from premium materials, this axle is engineered for durability and precision, making it a must-have for serious RC enthusiasts.

## Description

AMK 216.4g Brass TRX4M Axle, Extended 20mm TRX4M Portal Axle, TRX4M Brass Axle with Two Servo Mount Options, for 1/18 RC CrawlerCar TRX4M Axle Upgrade Parts

## Features

- Material: Brass (Axle Housing, Servo Rod), Stainless Steel (CVD Shafts, Servo Rod), Carbon Steel （Output Shaft/Gear）, Brass (Wheel Hex), Plastic (Ball Head)
- Enhanced Design: Equipped with 2 sets of different link rods, 2 different servo mounts, (Horizontal Servo Mount and Vertical Servo Mount) Can be alternated for use
- TRX4M Portal Axle Features: the axles increase the width of each side by 10mm, extending the total length by 20mm. The entire axles have been extended, not just the dogbone shafts, which prevents the dogbone shafts from being overburdened
- TRX4M Axle Gears: 24T/12T; Underdrive Portal Gears: 12T/22T; Axle Gear Ratio: 3.67:1; Output Shaft: 3mm; Steering Angle: About 45°; Connector Specification: 7mm, Thickness (4mm); Net Weight: About 216.4g; Total Length: 132.5mm
- Note: Not compatible with stock TRX4M chassis as the laydown servo mount is wider than stock. Compatible with chassis available in stores

## Images

![AMK 216.4g Brass TRX4M Axle, Extended 20mm TRX4M Portal Axle, TRX4M Brass Axle with Two Servo Mount Options, for 1/18 RC CrawlerCar TRX4M Axle Upgrade Parts - Image 1](https://m.media-amazon.com/images/I/61BqqBGe0yL.jpg)

## Frequently Bought Together

- AMK 216.4g Brass TRX4M Axle, Extended 20mm TRX4M Portal Axle, TRX4M Brass Axle with Two Servo Mount Options, for 1/18 RC CrawlerCar TRX4M Axle Upgrade Parts
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**Shop now:** [https://www.desertcart.hr/products/664592909-amk-216-4g-brass-trx4m-axle-extended-20mm-trx4m-portal](https://www.desertcart.hr/products/664592909-amk-216-4g-brass-trx4m-axle-extended-20mm-trx4m-portal)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-01-22*