Two metal Drag Specialties Fat Bob-Style Gas Tank halves, each with visible welds and fuel caps, are positioned upright side by side on a white background. These classic 3.5-gallon tanks are ideal for customizing your motorcycle and fit perfectly on various Softail models.
Two metal Drag Specialties Fat Bob-Style Gas Tank halves, each with visible welds and fuel caps, are positioned upright side by side on a white background. These classic 3.5-gallon tanks are ideal for customizing your motorcycle and fit perfectly on various Softail models.
Two metal Drag Specialties Fat Bob-Style Gas Tank halves, each with visible welds and fuel caps, are positioned upright side by side on a white background. These classic 3.5-gallon tanks are ideal for customizing your motorcycle and fit perfectly on various Softail models.

Fat Bob-Style Gas Tank - 3.5 Gallon

Regular price$358.23

SKU: 105-0240

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Add Petcock

Add Fuel Caps

Set of two caps

Add Fuel Tank Mounting Kit

Weld-on kit; permits repair of Softail-style mount points or upgrading earlier frames to later mounts

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Drag Specialties Flat Side Gas Tanks (3-1/2 Gallon) for Harley-Davidson Four-Speed Big Twin and Softail 1984-1999

Need a fresh set of flatside tanks? These are the ones to get. Easy on the wallet, this set of tanks is perfect for restoration of an old friend or a fresh build on many of the popular aftermarket Softail-pattern frames.

  • Flatside-style tanks
  • Accepts stock dash and speedometer
  • Accepts 22mm petcocks
  • 3-1/2 gallon capacity
  • Accepts screw-in style fuel caps
    • These use the 1982-and-newer style vented and non-vented caps
  • Sold as a set of two tanks

TC Bros. strongly recommends fitting these tanks to the frame before final finish. Mounts and mating components may need to be shimmed or adjusted. After that, we recommend pressure testing before applying body filler and painting—that's standard practice in motorcycle shops to ensure there's no re-doing the job.

These tanks are "in the white," meaning raw steel, so it's likely they will display some surface rust upon receipt since these are not sold as ready-to-install.

  • 1985-1986 Harley-Davidson Big Twin with four speed transmission
  • 1984-1999 Harley-Davidson Softail with carburetor and without left-side fuel gauge
  • Caps, petcock, and fuel line may require alteration
  • 105-0240; replaces DS-391237, 61218-85, 61426-85

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