RPM Can-Am X3 9 Gallon Auxiliary Fuel Tank Kit

Can-Am X3 9 Gallon Auxiliary Fuel Tank Kit

Eliminate range anxiety, extend your off-road adventures, and stop cutting epic rides short with RPM’s 4.5 Gallon Auxiliary Fuel Tank System! Whether you are running long Baja pre-runs, tackling remote backcountry trails, or spending all day hammering the dunes in high-boost Sport Mode, this under-seat transfer system provides the extra fuel capacity you need without sacrificing cargo bed storage.

Sold individually per side, you have the flexibility to run a single 4.5-gallon tank (driver or passenger side) or combine both sides for a massive 9-gallon total capacity increase! Designed to mount directly beneath the factory front seats, the tanks place fuel weight as low in the chassis as possible to preserve your low center of gravity and prevent the sluggish handling or body roll caused by roof- or bed-mounted fuel jugs. Because each side is an independent, dedicated cell, all tanks and high-pressure fuel lines remain completely clear of the rotating driveshaft and center tunnel.

Refill your primary factory fuel tank on the fly at 1.3+ gallons per minute! Each kit includes a dedicated high-flow transfer pump and a 100% plug-and-play wiring harness with a momentary switch, ensuring you never accidentally leave the pump running, drain your battery, or overheat the motor (when running dual tanks, a single switch coordinates both pumps). Safety is built into the core design: our system retains the factory OEM tip-over check valve to eliminate fuel spillage in the event of a rollover. Additionally, an engineered internal overflow return loop automatically cycles excess fuel right back into the auxiliary tank once the OEM tank reaches capacity—allowing you to transfer fuel worry-free without overfilling or fuel spewing.

Installation is 100% non-invasive with zero cutting, chassis welding, or custom bracket fabrication. Constructed from 6mm thick seamless RotoMolded polymer—nearly three times thicker than a factory tank—each cell features molded-in stainless steel threaded inserts and a knurled billet aluminum fuel filler cap.

System Specifications & Capacities:

• Fuel Capacity: 4.5 Gallons per side (Combines for up to 9.0 Gallons total additional capacity when running both sides)

• Transfer Speed: 1.3+ Gallons Per Minute (GPM) via high-flow internal electric transfer pump

• Tank Shell Construction: 6mm seamless heavy-duty RotoMolded polyethylene (nearly 3x thicker than OEM tank)

• Fuel Filler: Premium CNC-machined knurled billet aluminum gas cap

• Electrical System: 100% Plug-and-Play Wiring Harness with Momentary In-Cab Dash Switch

• Safety Integration: Fully retains the factory OEM tip-over check valve and integrates automatic overflow recirculation

• Mounting Configuration: Sold individually per side (Driver Side or Passenger Side)

Features:

• Flexible 4.5 to 9.0 Gallon Range Extension: Run one side for 4.5 extra gallons or pair both driver and passenger tanks to nearly double your factory fuel range.

• Low-Center-of-Gravity Placement: Mounts low under the front seats to maintain vehicle balance, stability, and razor-sharp cornering dynamics.

• Rapid 1.3+ GPM On-the-Fly Transfer: Refills your factory main tank quickly while driving or stopped with the push of a momentary dash button.

• Built-In Overfill & Spill Protection: Closed-loop return architecture routes excess fuel safely back to the auxiliary cell once the main tank is full—zero overflow risk.

• Factory Rollover Check-Valve Retention: Uses the OEM tip-over check valve system to prevent dangerous leaks or fuel vapor discharge during rollovers.

• 100% Non-Invasive Bolt-On Install: Requires no frame cutting, drilling, chassis welding, or permanent modifications.

• RotoMolded Extreme-Duty Shell: 6mm thick seamless construction resists severe roost, rock strikes, chassis vibration, and puncture hazards.

• Billet Aluminum Gas Cap: Precision-machined billet aluminum cap provides an airtight, leak-proof mechanical seal.

• Drivetrain Clearance: Self-contained per-side architecture keeps all plumbing and mounting brackets completely isolated from the front-to-rear driveshaft.

What's Included (Per Side Kit):

• (1) RPM SXS 4.5 Gallon RotoMolded Under-Seat Fuel Cell

• (1) CNC-Machined Billet Aluminum Fuel Cap

• (1) High-Flow 1.3+ GPM Electric Fuel Transfer Pump

• (1) 100% Plug-and-Play Wiring Harness with Momentary Rocker Switch

• (1) Complete Fuel Line, Vent Line, & Check-Valve Plumbing Assembly

• (1) Complete Stainless Steel Mounting Hardware & Bracket Kit

Fitment:

Direct bolt-on installation for all 2-seat and 4-seat Can-Am Maverick X3 models:

• Can-Am Maverick X3 2-Seat (All Models & Trims): 2017–2026 (Turbo, Turbo R, Turbo RR, X DS, X RS, X MR, X RC)

• Can-Am Maverick X3 MAX 4-Seat (All Models & Trims): 2017–2026 (Mounts directly under the front driver and front passenger seats only)

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