RPM RZR Pro R, Turbo R, Pro XP, Pro S 4 Seat 6 Gallon Auxiliary Fuel Tank
$769.95 USD
RPM 6-Gallon Auxiliary Fuel Tank
Maximize your trail range and push deeper into the dunes, rocks, or desert with the RPM SXS 6-Gallon Auxiliary Fuel Tank! Specially engineered to drop directly into the empty factory space under the driver’s side rear passenger seat, this auxiliary system expands your total fuel payload by ~50% without sacrificing interior comfort, cargo room, or folding seat functionality.
Installation is completely clean, non-invasive, and non-destructive—zero cutting into the chassis, zero relocation of batteries, and zero interference with factory emissions, wiring, or plumbing. All fuel transfer lines are routed safely away from drivetrain components. Built from heavy-duty 5mm rotomolded plastic, this tank ties straight into the OEM fill neck for simple filling and venting, keeping 100% of fuel fumes outside the cockpit.
Safety is engineered into every component: the system retains your factory tip-over check valve to keep fuel fully contained in a rollover, while an auto-bleed vent safety line automatically routes any main-tank overfill back into the auxiliary tank. Powered by an industry-leading 1.25 GPM high-volume pump, it transfers fuel fast via a plug-and-play harness with an integrated momentary switch—eliminating accidental pump burnouts or over-pumping.
Features:
+6 Gallon Auxiliary Fuel Expansion: Expands your range by roughly 50%, letting you stay out on the trail longer without carrying dangerous gas cans.
Under-Seat Drop-In Fitment: Installs neatly under the driver's side rear passenger seat while maintaining 100% of factory folding seat functions.
Heavy-Duty 5mm Rotomolded Construction: Ultra-durable, impact-resistant plastic designed for extreme off-road punishment.
High-Volume 1.25 GPM Fuel Transfer: Industry-leading pump transfers fuel quickly to get you back to driving fast.
Plug-and-Play Wiring & Momentary Switch: Clean, pre-wired setup featuring a momentary toggle switch that prevents dry-running or burning out the pump.
Zero Interior Fumes & Non-Invasive Install: Ties into the OEM fill neck for filling and venting; zero cutting, zero battery relocation, and zero cab gas smells.
Advanced Rollover & Overfill Protection: Preserves factory tip-over safety valves and features automatic overfill recirculation back to the aux tank.
Includes Locking Gas Cap: Comes equipped with an OEM-style Kelch locking gas cap for added security.
What's Included in the Kit:
(1) RPM 6-Gallon Rotomolded Auxiliary Fuel Tank
(1) 1.25 GPM High-Volume Fuel Transfer Pump
(1) Plug-and-Play Wiring Harness with Inline Fuse & Momentary Switch
All orders typically ship within 2-4 business days of order being placed. Weekends, holidays, and weather may slow fulfillment down on order processing. Unless otherwise noted, backordered items will ship according to their estimated shipping times.
Pretty straight forward install.
Wiring kit supplied made it super easy.
Only issue I had was the crush washers on the banjo bolt on the pump. Had to replace one with a smaller diameter
It takes some time, mainly getting everything removed. Installation was smooth, especially with the instructions and photos provided.
Works great! Well satisfied!
It’s hard to see it in the picture….I believe that was their intention. Fits like a glove. Every square inch of space was utilized. These guys are some serious craftsmen. We ordered all three of their tanks. We now have a realistic range of at least 250 miles. Over 300 if were easy on the skinny pedal. Highly recommend these products. In fact….we told a friend of our and he ordered one too.
Dave and Charlene Wyman
Great product, happy to add more range to my Pro R since it does guzzle gas. Now I can enjoy more riding without having to worry about the fuel gauge. Install was ok took me about 2.5 hours. Very happy with how it turned out.
Worth every penny! The pump works super fast to add that reserve fuel to your normal tank. Install was pretty easy and straight forward I did it all by myself with basic tools.
A little tough to cut the filler hole just right . Took my time ,cut a little at a time . Came out great .
Taking all of the seats out was no problem . Mounted the momentary fill switch on the dash .
Works great . Very well constructed !
Install was very straight forward. Very nice having a “reserve” tank. The fit and finish is high quality. Only critique would be that the pump is very loud.
Love the tank and the look. The added range of 4.5 more gallons is awesome. Instructions were easy to follow. It’s not the quickest project to do but the end result looks factory and is so worth the effort.
you need to have on phone customer service, we had a cap that had no mention in instructions and when we called, the replay was to email. did not give me a good feeling after receiving a well made product.
Fits perfect!! Didn’t have to wallow any holes to mount! These guys did a great job on making this tank! Pro R guys ya need this! 100 mile PLUS range instead of 80!
Very disappointing that 2 weeks after I buy the tank and recommend them to 3 friends you lower the price by 20%. It is a nice well built tank, I just don't have any respect for your company when you treat your customers like this.
Greg Jones
This category doesn't include any parts listed as fitting this machine. Other categories may have parts that fit — try browsing all products or a different category.
Free shipping over $200.00
RPM RZR Pro R, Turbo R, Pro XP, Pro S 4 Seat 6 Gallon Auxiliary Fuel T
