Rotopax and similar flat-pack fuel containers are made to be ridiculously durable and resist cracks. On top of that, their flat design lets you mount them on surfaces easily without taking up too much space. They include built-in mounting systems (usually two-point or three-point mounts) and stack together if you need to carry multiple packs. The pour spouts seal well and are designed for easy filling of UTV tanks.
Your classic Jerry cans (rectangular, metal or plastic) are what most people are accustomed to. Their capacity is pretty good, and they are really, really durable, but the main problem is that they can be chunkier and tend to weigh more.
Auxiliary fuel cells are popular on race machines and long-range expedition rigs. The advantage is convenience; your fuel pump draws from both tanks automatically.
Rotopax-style mounts typically use a base plate that bolts to your machine, with the fuel pack clicking into locking tabs on the mount. Better systems use three-point mounting for additional security and to prevent stress cracking at mounting points. Some mounts include lock mechanisms that prevent theft, which is important if you're leaving your machine unattended with fuel packs attached. Universal mounting systems work with multiple fuel pack brands and sizes, giving you flexibility if you want to change pack configurations later.
Mounting location matters both for safety and functionality. Roll cage mounts keep fuel weight high, which isn't ideal for handling, but they free up bed space and provide easy access. Bed rail mounts or bed floor mounts keep the weight lower and more centered, better for handling, but they consume cargo space. Rear cargo rack mounts work well for keeping fuel out of the cab area entirely, though access can be awkward.
Gauging Your UTV Fuel Pack Needs
For extended day rides in remote areas, 3-5 gallons of extra fuel extend your range enough to explore confidently without constantly worrying about fuel levels. This amount lets most machines run all day hard without refueling.
If you’re doing some desert racing (lucky!) or going on a longer excursion, it’s not unreasonable to bring along more than ten gallons of fuel. Once you get to this level, you are adding somewhere in the vicinity of sixty to eighty pounds, which will be enough to be felt in your handling. Just make sure to calculate your fuel needs realistically based on your fuel efficiency and your upcoming ride. Factor in that aggressive riding, large tires, and performance mods all reduce fuel economy—don't base calculations on best-case consumption numbers.
Is it legal to carry extra fuel in my UTV on public trails?
This varies by location and land management agency. Some authorities will allow extra fuel up to a certain amount, as long as it’s mounted properly. Others may prohibit extra fuel of any kind. Always check regulations.
Is there a trick to preserving my fuel while it sits in a pack?
Fuel stabilizers are helpful, and remember that heat exposure is not your friend.
Is mounting UTV fuel packs on the roof a thing?
Yes indeed: you can mount fuel packs on roof racks, and many riders do for the convenience of freeing up bed space.