Drag Specialties Gas Tank For Harley Sportster These bolt-on gas tanks for XL models are made of heavy-gauge steel with reinforced seams and come complete with extra-strong mounting tabs. The rubber mount bushings and hardware are included. The 2.25 gallon peanut style tank is 2 narrower than the 2.9 gallon king style tank. Features: Thread-in style gas cap bung 22mm right-side petcock bung Mounting hardware included Deep tunnel Raw finish Note: The gas cap and petcock are not included. Always check for fitment and pressure test gas tanks prior to painting.