---
product_id: 442361931
title: "RX-3EXT Extension Pack - 3 Gallon Capacity"
brand: "rotopax"
price: "$667648"
currency: COP
in_stock: true
url: https://www.desertcart.co/products/442361931-rx-3ext-extension-pack-3-gallon-capacity
store_origin: CO
region: Colombia
---

# Patented 3-layer roto-molding 3 Gallon Capacity Made in USA, EPA & CARB compliant RX-3EXT Extension Pack - 3 Gallon Capacity

**Brand:** rotopax
**Price:** $667648
**Availability:** ✅ In Stock

## Summary

> 🛢️ Stack, Store, and Go – Fuel Your Freedom with RotopaX!

## Quick Answers

- **What is this?** RX-3EXT Extension Pack - 3 Gallon Capacity by rotopax
- **How much does it cost?** $667648 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/442361931-rx-3ext-extension-pack-3-gallon-capacity)

## Best For

- rotopax enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Patented three-layer roto-molding ensures unmatched durability and ultra-low fuel permeability.
- • **Proudly American:** Crafted in the USA by the original innovators of fuel and water packs—quality you can count on.
- • **Stack Your Adventure:** Seamlessly stack multiple packs with the RX-3EXT Extension for ultimate fuel storage flexibility.
- • **Lightweight & Compact:** At just 535g and slim dimensions, it’s easy to carry without sacrificing capacity.
- • **Compliance You Can Trust:** Only EPA and CARB compliant fuel container on the market, meeting strict environmental standards.

## Overview

The RotopaX RX-3EXT Extension Pack is a 3-gallon, EPA and CARB compliant fuel container extension made in the USA. Featuring a patented three-layer roto-molding process and specialized plastic barrier, it offers superior durability and ultra-low permeability. Designed to stack with other RotopaX packs, it enhances fuel storage capacity while maintaining a lightweight, compact form factor.

## Description

RotopaX RX-3EXT Extension Pack - 3 Gallon Capacity

## Features

- RotopaX are the only EPA and CARB compliant fuel containers available for sale in the United States! This is thanks to a patented three-layer roto-molding process, along with specially formulated plastic barrier material to meet the governments' new extremely low permeability requirements.
- RotopaX (patent pending) are proudly made in the U.S.A.
- by the original manufacturer of the first generation fuel and water packs.
- RotopaX are indisputably superior products.With RotopaX Pack Mount Extension, you can finally stack multiple packs together!New anodized aluminum.Use in conjunction with a RotopaX pack mount to extend its functionality.Sold individually.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | RotopaX |
| Brand | RotopaX |
| Model | RX-3EXT |
| Product Dimensions | 12.7 x 2.54 x 2.54 cm; 535.24 g |
| Item model number | 451-3040 |
| Manufacturer Part Number | 451-3040 |
| OEM Part Number | 175143 |
| Volume | 44.96 Cubic Inches |
| Colour | Black |
| Tyre Type | engine-mounts |
| Assembly Required | No |
| Manufacturer | RotopaX |
| Country of Origin | USA |
| Item Weight | 535 g |

## Images

![RX-3EXT Extension Pack - 3 Gallon Capacity - Image 1](https://m.media-amazon.com/images/I/51MbGOj-2UL.jpg)

## Questions & Answers

**Q: What exactly are you selling? Is this a bracket or a gas container or 3- 1 gallon containers**
A: Just the extension. For piggy-backing tanks on top of standard mount

**Q: Is this a 3 gallon can? Or just a kit to make a pack of cans?**
A: This is the extension bracket so you can put two 3 gallon cans on the same mount

**Q: Can you have 2 containers. One on top of the other with this pack mount?**
A: This extender is designed to mount two 3 gallon tanks on top of each other or  beside each other however you desire, but you need the original mounting bracket for a single can to make this work

**Q: Will this work stacking two 2gallon rotopak?**
A: I would say yes you can stack them. But you won’t be able to lock them down correctly.

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---

*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-01-24*