What is the average gas tank size and shape?

Gas tanks come in all shapes and sizes, making it hard to give an average gas tank size. Harley-Davidson motorcycles typically get 40-50 miles per gallon, which is a good reference point for how far you can ride based on the capacity of your gas tank.

Can motorcycle gas tanks be repaired?

To repair a motorcycle gas tank you first need to determine what it is made out of. Leaky steel gas tanks can be repaired by welding or brazing. This necessitates removing the gas tank and completely flushing and purging the old gas and fumes. The heat of welding typically damages the paint in the repair area. If it is dented repairs can be made by using body filler and repainting the gas tank. If the gas tank is fiberglass and is leaking it can be patched and repaired with fiberglass.

Should I replace my gas tank?

Replacing a gas tank is often due to damage, or to change the look and style of a motorcycle. If it is due to damage or age, a replacement gas tank is often the easiest option, as it can simply be bolted in place of the original. If replacing a stock gas tank with a custom one, it may be a bolt-on part, or, it may require some welding or fabrication to make it work. For an example of this check out our Motorcycle Gas Tank Install How-To article.

Do you have to seal a motorcycle gas tank?

It is our opinion that the inside of motorcycle gas tanks do not need to be sealed / lined. If a gas tank has been repaired or modified, it should be pressure tested to check for pinhole leaks along weld seams. If there are any leaks, they should be properly repaired by welding the pinhole. Lining a gas tank can stop flash rust from forming inside the tank, however, if the lining fails and starts coming loose from the gas tank walls, you have to remove the gas tank and totally strip the liner. There are pros and cons to lining a tank, and it is personal preference, but in our experience we do not find it useful. If you would like to line a tank, we recommend Caswell Gas Tank Liner as a superior product.

Harley-Davidson Motorcycle Gas Tanks Motorcycle Gas Tanks

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Cycle Standard Stock Style Harley Sportster Gas Tank 1986 - 2003 - Left Side Petcock - 2.2 gallon
61 reviews $164.99

Lowbrow Customs WX Split Gas Tanks - Bolt-On for 1936 - 1984 Big Twin Harley-Davidsons - 2.25 gallon
64 reviews $384.99

Cycle Standard Harley-Davidson Ironhead Sportster 1958 - 1978 Replica Stock Style Gas Tank - 2.4 gallon
47 reviews $149.99

Lowbrow Customs Gas Tank Adapter Brackets 1982-2003 Harley Sportsters XL
46 reviews $44.99

Drag Specialties Fat Bob Style Gas Tanks - 1948-1984 Harley-Davidson FX/FL - 3.5 Gallon
$196.95

Cycle Standard Frisco Mount 2007-up EFI Sportster Gas Tank - Standard Width - 2.5 gallon
7 reviews $199.99

Cycle Standard Blackbird Legacy Gas Tank for 2007-2021 and EFI Harley-Davidson Sportsters - 3.5 gallon
12 reviews $299.99

Cycle Standard Blackbird Legacy Gas Tank for 1982 - 2003 Harley-Davidson Sportsters - 3.5 gallon
12 reviews $279.99

V-Twin Manufacturing Frisco Mount Sportster Bobber Gas Tank - 2.5 gallon
3 reviews $139.95

Drag Specialties Gas Tank with Aero-Style Gas Cap - 1995-03 Harley-Davidson Sporster - 3.3 Gallon
$261.95

Cycle Standard Stock Style Harley King Sportster Gas Tank 1995 - 2003 - Left Side Petcock - 2.9 gallon
8 reviews $149.99

Drag Specialties Diamond Pattern Gas Tank 2004 - 2006 Sportster XL Models
4 reviews $265.95

Cycle Standard Stock Style Harley King Sportster Gas Tank 1986 - 1994 - Right Side Petcock - 2.9 gallon
3 reviews $159.99

Lowbrow Customs Reproduction Harley Model 125 / Model 165 / Hummer Gas Tank with Key Switch
2 reviews $239.99

Drag Specialties Fat Bob Style Gas Tanks - 1948-84 Harley-Davidson FX/FL - 5 Gallon
$239.95

Drag Specialties Diamond Pattern Gas Tank 2007-Up Sportster XL Models
1 review $234.95

Paughco Frisco Mount King Gas Tank - 1995-03 Harley-Davidson Sportster - 2.9 Gallon
$265.95

Drag Specialties Fat Bob Style Gas Tanks - 1984-99 Harley-Davidson FXST/FLST 1985-86 FX/FXWG - 5 Gallon
$259.95

Cycle Standard Stock Style Harley-Davidson Sportster Gas Tank 2007-2021 - EFI - 2.2 gallon
$196.08 $208.55

Paughco Frisco Mount Dished Gas Tank - 2007-18 Harley-Davidson Sportster - 3.5 Gallon
$553.95

Drag Specialties Fat Bob Style Gas Tanks - 1984-99 Harley-Davidson FXST/FLST 1985-86 FX/FXWG - 3.5 Gallon
$259.95

Drag Specialties Rubber-Mount Quickbob Gas Tank 1986-03 Harley-Davidson Sportster
$376.95

Paughco Frisco Mount King Gas Tank - 2004-06 Harley-Davidson Sportster - 2.9 Gallon
$303.95

V-Twin Manufacturing Harley-Davidson Ironhead Sportster Stock Style Gas Tank OEM #61006-57 1952-78 - 3.5 gallon
5 reviews $251.95

Drag Specialties Quickbob Extended Dash-Style Gas Tank Kits 1982-94 Harley-Davidson Sportster
4 reviews $644.95

Drag Specialties Gas Tank with Aero-Style Gas Cap - 1982-94 Harley-Davidson Sportster - 3.3 Gallon
$313.95

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