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.

Motorcycle Gas Tanks

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Picking The Universal & Aftermarket Motorcycle Gas Tanks Choosing the Right Type of Gas Tank for Your Motorcycle Lowbrow Customs carries a selection of motorcycle gas tanks that will look great on your next build. Your gas tank is a focal ...

Choosing the Right Type of Gas Tank for Your Motorcycle

Lowbrow Customs carries a selection of motorcycle gas tanks that will look great on your next build. Your gas tank is a focal point for your bike and picking the right tank can be tricky. How the tank is going to look on the bike is one important factor, but you need to also consider ease of installation and capacity.

Buying a Motorcycle Gas Tank at Lowbrow Customs (Set H3)

Lowbrow Customs has a good selection of motorcycle gas tanks for sale that are very popular for a variety of builds. These Lowbrow Customs gas tanks are fashioned from high-quality steel and they are pre-pressure tested to ensure there are no leaks. These aftermarket motorcycle fuel tanks have hand-brazed fuel and cap bungs and feature TIG welded tank seams and mounting tabs. Lowbrow Customs has an excellent selection of custom motorcycle gas tanks and vintage motorcycle gas tanks that will deliver excellent fit, function and style.

Sportster® Gas Tanks for Your Custom Motorcycle Build

Lowbrow Customs has the perfect universal motorcycle gas tanks for your next Sportster® build. We carry a variety of Sportster® gas tanks made specifically for Sportster® frames that you can only find here at Lowbrow Customs. We run these tanks on our bikes and we have used our experience to develop some unique gas tanks that look and perform like they should.

We carry popular styles like the P-Nut style tank which has the rounded look that is a popular choice for many Sportster® builds. If you are looking for a tank that has more of a standard look you need to check out our Frisco style tanks which sit higher on the frame than a standard replacement tank. These tanks feature a rear motorcycle petcock bung which allows you to use all the fuel in the gas tank increasing your range before refueling. Another exclusive product is our Lowbrow Customs Gas Tanks Adapter Brackets for 1986-2003 Harley Davidson® Sportster® frames. These adapters allow you to bolt a variety of gas tanks right onto your frame without having to weld any mounting tabs directly to your frame. They have a streamlined look and allow for easy gas tank installation on a Harley-Davidson Sportster.

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Motorcycle Gas Tanks FAQ

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