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    • Auxiliary / Range Extension Tanks

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    Adventure motorcycles are built to go the distance — and sometimes factory range just isn't enough. Our auxiliary and range extension tanks are designed specifically for street and adventure bikes, adding significant fuel capacity without compromising handling or ergonomics. Whether you're planning a multi-day trip through remote terrain or simply want the confidence of extra miles between fills, these tanks deliver.

    Auxiliary street bike tanks are engineered to integrate cleanly with your motorcycle's existing fuel system, often utilizing the passenger peg mounts or subframe points for a factory-quality installation. Many options are available in hard cases or soft bladder formats to suit your bike's specific setup. Compatible with popular adventure platforms from BMW, KTM, Honda, and Triumph, among others.

    Find a compatible range extension tank for your adventure or street motorcycle using the filter above.

    Frequently Asked Questions

    What is an auxiliary gas tank and how does it increase fuel range on a street bike?

    An auxiliary gas tank is a supplemental fuel cell designed to plumb directly into your motorcycle's existing fuel system to provide additional mileage between stops. Brands like Safari and IMS manufacture these tanks to mount on the rear rack or subframe, effectively doubling your range for long-distance adventure touring on models like the BMW R1200GS or Honda Africa Twin.

    Which motorcycle models have range extension tanks available from Safari or IMS?

    Range extension tanks are primarily engineered for popular adventure and dual-sport platforms including the KTM 790/890 Adventure, BMW R-series GS, and the Honda CRF1100L Africa Twin. Manufacturers like Safari Tanks and IMS Products design these units with model-specific mounting hardware to ensure a factory-like fit without interfering with passenger seating or luggage systems.

    How much extra fuel capacity do auxiliary tanks add to adventure motorcycles?

    Most auxiliary and range extension tanks add between 1.5 to 3.5 gallons of fuel depending on the specific bike model and tank design. For instance, a Safari Aux Tank for the BMW R1200GS typically adds around 2.4 gallons, which can extend your riding distance by over 100 miles depending on conditions and throttle usage.

    Are auxiliary fuel tanks from brands like Long Range Automotive compatible with OEM luggage?

    Compatibility varies by brand, but many Long Range Automotive and Safari tanks are designed to work with major aftermarket pannier racks or include integrated mounting points for gear. It is important to verify if your specific luggage rack brand requires spacers or modifications to clear the increased width of the rear-mounted fuel cell.

    What should I consider when choosing between a rear-mount auxiliary tank and a larger primary tank?

    A rear-mount auxiliary tank is ideal if you want to maintain a slim profile between your knees while gaining extra capacity, whereas a larger primary tank from Acerbis or Clarke replaces the stock unit entirely. When buying, ensure the kit includes the necessary vacuum pumps or gravity-feed plumbing hardware required to transfer fuel from the auxiliary unit into your main fuel delivery system.