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Throttle Addiction

Frisco Sportster Peanut Gas Tank

7 reviews Write a Review

Out of Stock


This classic Sportster gas tank has been set up with a low "Frisco" tunnel to maximize fuel capacity and sit high and stylish on the backbone. Commonly refered to as a Peanut Tank,  It will give your chopper or bobber a custom look but still carry more than enough fuel to get you where you need to go. 1/4" NPT petcock mounted low and on the left to ensure every last drop of fuel is used.  This version maintains the stock shape and size as the Harley Davidson produced Sportster tanks from the '70s into the early 2000s.


  • 1/4" NPT petcock bung
  • Universal mounting tabs
  • 2.5 gallon capacity
  • Requires vented cam style gas cap (not included)


  • 15" long x 9" wide x 8" high
  • 17.5" long tab to tab
  • Tunnel:  2.25" wide x 1.5" deep (at the lowest point)

Tanks are pressure tested at the factory, but it is best to test again before you paint it.  Be sure fit of tank, mounting hardware, petcocks and gas caps are true prior to painting.  No stress is applied to the tabs when bolting them to the frame, this can lead to cracking of welds.  If needed, use leather or rubber washes to shim between the tabs and the backbone to ensure an even fit.  Do not sand seams or welded edges of gas tanks, if needed use a thin spread of body filler prior to painting.  Throttle Addiction warranties gas tank defects however we do not cover paint work.  Ensure your tank arrived damage free BEFORE you paint! 



7 Reviews

  • 4
    Good Value

    Posted by Danny on 29th Apr 2021

    Good recreation of OEM dimensions and construction, passed pressure testing. Will require some sanding of bottom edge to straighten out some ridges. The petcock also wasn't tapped deeply enough for a Prism petcock. Easy to address but good to know beforehand!

  • 4
    San Fran goober

    Posted by Brad on 1st Dec 2020

    This is pretty much exactly what I was looking for, for my sprotster build. This tank sits down just enough to cover the backbone!

  • 5

    Posted by Richard Wysocki on 9th Jan 2020

    Great tank but I fucked up and didnt measure the mounts, so I cant use it.I wanted to swap out the narrow tank thats on the bike now, but the hole for the front mount is about 3 inches to short to reach the bung in the frame which has been molded and painted .

  • 5
    Thanks from Canada

    Posted by Aaron on 10th Sep 2018

    Not my first time ordering and will not be my last. Thanks for the great tank and excellent customer service.

  • 4
    Frisco tank

    Posted by Tk on 17th Mar 2018

    Overall good tank, would buy again. Fast shipping, reasonable price

  • 5
    Frisco tank

    Posted by Mike Riach on 18th Jun 2016

    Tanks was sent promptly and was easy to mount and setup..I sent it to my painter and he was impressed with the quality and said it needed much less prep for paint than with other tanks from other sources he has done in the past .. thanks Throttle Addiction! !

  • 5
    Throttle Addiction Rules

    Posted by Clarke on 1st Apr 2016

    Great products, good prices and superior service- every time. Usually you only get one or two of those things and the other sucks. Throttle addiction delivers it all and will continue the get my business.

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