RotoPaX® Standard Pack Mount Extension

RotoPaX® Standard Extension

The RotoPaX® Standard Extension is designed to let you stack a second RotoPaX® container—1, 2, or 4-gallon—on top of an existing one, using a single mounting point. This extension does not replace a base mount; it threads into a Standard, DLX, or LOX Pack Mount and gives you a strong, secure way to carry two containers on one mount.

Here’s how it works: Start by mounting your first RotoPaX® container to your vehicle using a compatible Pack Mount. Then thread the Standard Extension into the mount’s center post. The extension becomes the new threaded point for your second RotoPaX® container, which stacks directly on top. The result? Two containers, one mount, no rattling.

If you’re carrying extra fuel, water, or dry storage, this is the easiest way to double your capacity without adding extra mounting hardware.

Why We Love This

It’s the cleanest, most space-efficient way to stack gear. Whether we’re doubling up on fuel or carrying water and tools, this extension gives us flexibility without taking up more roof rack or spare tire real estate. Built solid, threads smoothly, and locks down tight.

Features & Benefits:

• Adds a Second Container – Stack a second 1, 2, or 4-gallon RotoPaX® container on top of an existing one

• Requires a Base Mount – Works with Standard, DLX, or LOX Pack Mounts

• Space Efficient – Lets you carry more gear without needing a second mounting point

• Solid Construction – Built to stay tight and rattle-free on the trail

• Made in the USA – Built with the same quality as every RotoPaX® component

Not Compatible With:

• 1.75-Gallon or 3-Gallon Containers — Use the 1.75-Gallon Extension or 3-Gallon Extension instead.