RotopaX 3 Gallon Extension — Container Stacking Kit
RotopaX 3 Gallon Extension — Container Stacking Kit
RotopaX 3 Gallon Extension — Container Stacking Kit

RotopaX 3 Gallon Extension — Container Stacking Kit

Vendor: RotopaX
SKU: RX-3EXT
Availability: In stock
Product type: Mounting Kit
The RotopaX 3 Gallon Extension is the stacking hardware you need to add a second container on top of the 3 Gallon RotopaX, the 3.5 FuelpaX, or the 4.5 FuelpaX....
$44.99
$44.99
$44.99
Subtotal: $44.99

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RotopaX 3 Gallon Extension — Container Stacking Kit

RotopaX 3 Gallon Extension — Container Stacking Kit

$44.99
RotopaX 3 Gallon Extension — Container Stacking Kit
RotopaX 3 Gallon Extension — Container Stacking Kit
RotopaX 3 Gallon Extension — Container Stacking Kit

RotopaX 3 Gallon Extension — Container Stacking Kit

$44.99
Description
Description
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The RotopaX 3 Gallon Extension is the stacking hardware you need to add a second container on top of the 3 Gallon RotopaX, the 3.5 FuelpaX, or the 4.5 FuelpaX. It lets you expand the capacity of your existing setup on a single mount point without adding additional mounting hardware or taking up extra rack space. If you are already running one of those three containers and want to stack a smaller pack on top — a 1 gallon, 2 gallon, or storage pack, for example — this is the extension that makes it possible.

The extension connects the top of the base container to the bottom of the second pack and holds the two together in a secure, stacked configuration on one mount. It is a clean, purpose-built solution for building out a higher-capacity setup without cluttering your rack with multiple separate mounts. The stacked assembly stays on the same Standard, DLX, or LOX pack mount used for the base container.

One important compatibility note that is worth reading carefully before ordering: the 3 Gallon Extension is specifically for stacking a container on top of the 3 Gallon, 3.5 FuelpaX, or 4.5 FuelpaX. If you are trying to stack the 3 Gallon on top of a 1, 2, or 4 Gallon pack, you need the standard 1, 2 and 4 Gallon Extension instead — not this one. Getting the right extension for your specific stacking configuration matters. This product is currently on backorder — confirm availability before ordering.

Features
Features
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Key Features

  • Stacking extension for the 3 Gallon RotopaX, 3.5 FuelpaX, and 4.5 FuelpaX — allows any compatible fuel or water pack to be stacked on top
  • Expands capacity on a single mount point without adding additional mounting hardware or taking up extra rack space
  • Works with the existing Standard, DLX, or LOX pack mount on the base container — no additional mount hardware required
  • Clean, purpose-built stacking solution for building out a higher-capacity setup on one mount location
  • Made in the USA

Dimensions

  • 4" x 1" x 5 1/4"

Compatibility

  • Use this extension to stack any compatible fuel or water pack ON TOP OF the following base containers:
    • 3 Gallon RotopaX
    • 3.5 FuelpaX
    • 4.5 FuelpaX
  • Do NOT use this extension if you are stacking the 3 Gallon on top of a 1, 2, or 4 Gallon pack — use the standard 1, 2 and 4 Gallon Extension for that configuration instead

Important Notes

  • This product is currently on backorder — confirm availability before ordering
  • Extension only — base container and pack mount sold separately
  • Selecting the correct extension for your stacking configuration is critical — review the compatibility section above before ordering
Shipping & Return
Shipping & Return
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Shipping

We ship nationwide and internationally. Most in-stock items leave our shop within 1–3 business days. Made-to-order and oversized parts may require additional lead time; any special timing will be noted on the product page.

Order Processing

If an order is placed outside of our normal business hours (Monday–Friday), we will process it as soon as possible once our team is back in the shop during regular operating hours. Weekend orders will be handled the next business day.

Tracking & Delivery

  • You'll receive a tracking email as soon as your order ships.
  • We cannot ship to PO Boxes for oversized or freight items.
  • Signature may be required for high-value shipments.

Freight & Oversize Items

  • Large/oversized products (bumpers, racks, etc.) ship via LTL freight.
  • Please inspect your delivery at arrival. Note any damage on the carrier’s paperwork and take photos before signing—this is required to file a claim.
  • Residential freight includes curbside delivery; inside delivery/appointments may incur additional fees.

International Orders

  • Duties, taxes, and import fees are the buyer’s responsibility and are not included at checkout.
  • Some products may have export restrictions or carrier limits.

Order Changes & Cancellations

  • Requests must be made within 24 hours of purchase when possible.
  • Custom or built-to-order items may not be cancellable once production begins.

Returns & Exchanges

We want you stoked on your gear. Eligible items may be returned within 30 days of delivery for a refund or exchange.

Eligibility

  • Items must be new, unused, uninstalled, and in original packaging with all hardware.
  • Buyer is responsible for return shipping unless the return is due to our error or a confirmed defect.
  • A restocking fee (typically 10–20%) may apply to non-defective returns to cover inspection, repackaging, and processing.

Non-Returnable Items

  • Installed/used items, custom or made-to-order products, electrical/electronic components, clearance/“garage sale” items, and gift cards.

How to Start a Return

  1. Log in to your account and open the order, or contact us with your order number.
  2. We’ll issue return instructions and an RMA if approved. Returns without RMA may be refused.
  3. Pack securely; include all parts and paperwork. We recommend insured, trackable shipping.

Refunds

  • Once received and inspected, approved refunds are issued to the original payment method within 3–5 business days.
  • Original shipping charges are non-refundable (except in cases of our error or a confirmed defect).

Damaged, Defective, or Incorrect Items

  • Please contact us within 7 days of delivery with photos of the product, packaging, and shipping label.
  • For freight damage, ensure notes are made with the carrier at delivery and take photos before signing.

Warranty

Many products include a manufacturer warranty. We’re happy to help facilitate claims—reach out with your order number, photos, and a description of the issue.

Questions about shipping or returns? Get in touch—our team is here to help you get trail-ready.

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