RPM 6 Gallon Auxiliary Fuel Tank for Polaris 4 Seat Models

The RPM 6 Gallon Auxiliary Fuel Tank is the ultimate extended-range solution for riders who want to go farther without compromise. Designed specifically for Polaris Pro R, Turbo R, Pro XP, and Pro S 4-seat models (2022+), this Polaris auxiliary fuel tank installs cleanly into the unused factory space beneath the driver-side rear passenger seat, adding serious range while keeping your vehicle fully functional.

This RPM auxiliary fuel tank increases total fuel capacity by approximately 50%, allowing you to push deeper into trails, dunes, desert terrain, and long-distance adventures without constantly planning fuel stops. Unlike many aftermarket fuel solutions, this Polaris 6 gallon fuel tank requires no cutting, drilling, or modification to the chassis. Factory wiring, emissions components, batteries, and drivetrain parts remain untouched.

Built from thick 5mm rotomolded plastic, the RPM 6 gallon auxiliary fuel tank is engineered to withstand extreme off-road abuse. It integrates directly into the factory fill neck for both filling and venting, resulting in a simple, OEM-style fueling process with zero fuel fumes inside the cab. Folding rear seats remain 100% functional, making this one of the cleanest installs available for any Polaris 4-seat auxiliary fuel tank.

Every RPM auxiliary fuel tank kit includes a high-volume 1.25 GPM fuel pump, which transfers fuel significantly faster than most competing systems. The plug-and-play wiring harness features a momentary switch, eliminating the risk of accidentally running the pump dry or damaging components. One switch can control multiple auxiliary tanks, making this system scalable for future upgrades.

Safety is a core focus of the RPM 6 gallon auxiliary fuel tank design. The system retains the factory tip-over check valve, ensuring fuel remains contained during a rollover. If the main tank is overfilled, excess fuel is automatically routed back into the auxiliary fuel tank through the vent line, preventing spills and maintaining proper pressure balance.

If you’re tired of cutting rides short and want the most reliable Polaris auxiliary fuel tank on the market, the RPM 6 gallon auxiliary fuel tank delivers unmatched range, safety, and ease of installation.

🔩 Key Features & Specs:

• 6 Gallon Auxiliary Fuel Tank Capacity
• Heavy-Duty 5mm Rotomolded Construction
• 1.25 GPM High-Flow Fuel Pump
• Plug-and-Play Wiring with Momentary Switch
• OEM-Style Kelch Locking Gas Cap
• Retains Full Folding Rear Seat Function
• No Cutting or Chassis Modifications Required
• No Fuel Fumes in the Cab
• Automatic Fuel Return via Factory Venting

🚙 Vehicle Fitment:

• Polaris Pro R 4 (2022+)
• Polaris Turbo R 4 (2022+)
• Polaris Pro XP 4 (2022+)
• Polaris Pro S 4 (2022+)

🏁 Why Choose the RPM 6 Gallon Auxiliary Fuel Tank?

Many extended-range fuel systems introduce fumes, complexity, and safety risks. The RPM auxiliary fuel tank stands apart with OEM-style integration, faster fuel transfer, and a no-compromise safety design—making it the preferred Polaris auxiliary fuel tank for serious riders.

Built by riders, for riders — stay out longer, ride harder, and fuel smarter.