How far can a Harley go on a tank of gas?

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. Sportsters tend to be smaller and get more miles per gallon, while large Touring bikes or Trikes are heavier and are on the lower range of miles per gallon.

What are the parts of fuel system?

Many new bikes are fuel injected, and have a computer to control the amount of gas fed to the engine. There is a fuel pump that provides fuel to the throttle body, which feeds the gasoline to the engine. Older bikes are carbureted, which is a simple system. Gas tends to be gravity fed from a gas tank to the carburetor and the amount of gas delivered to the engine depends on the size of the carburetor jets that are installed. The carburetor is tuned by changing the jets, which have different size orifices, which meters the amount of gasoline delivered to the engine.

Why is my motorcycle leaking gas?

If your motorcycle is leaking gas take a close look to see where the leak is originating. Common problems would include a leaky fuel valve (petcock), damaged fuel line, or if the fuel is coming from the carburetor, a stuck float. A leaky fuel valve or damaged fuel line can be replaced, while a stuck carburetor float can typically be fixed. The carburetor may just need some taps on the float bowl with the handle of a screwdriver to free the stuck float. If that doesn't work, make sure the fuel valve is off, remove the float bowl and check for grit or any debris that could be causing the float needle to not completely seat, which would allow gas to continue flowing into the float bowl even when it is full.

Gas Tanks

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Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Straight Outlet
24 reviews $25.40

Cycle Standard Stock Style Harley King Sportster Gas Tank 1986 - 1994 - Right Side Petcock - 2.9 gallon
5 reviews $175.99

Cycle Standard Custom Flush Mount Polished Stainless Steel Pop-Up Gas Cap and Weld In Bung
7 reviews $84.69

Cycle Standard Wassell Peanut Frisco Gas Tank 2.1 gallon
$164.99

Cycle Standard Axed Dual Cap Chopper Motorcycle Gas Tank 2.2 gallon
26 reviews $164.99

Lowbrow Customs Dished Screw-In Gas Cap for Harley-Davidson 1996 & later - Aluminum
4 reviews $38.49

Cycle Standard 1/4 inch NPT Petcock Chrome - 90 Degree
24 reviews $27.82

Cycle Standard 3/8 inch NPT Petcock 90 Degree Outlet
19 reviews $27.82

Lowbrow Customs Super Banana Gas Tank - Mid Tunnel - 2.6 Gallon
14 reviews $149.99

Cycle Standard Screw-In Harley Stock Style Vented Gas Cap - 1996 & up - Black
61 reviews $17.59

Cycle Standard Pop-Up Gas Cap Large Diameter - Black - Vented - 1996 - Up Harley-Davidson
15 reviews $26.92 $39.59

Cycle Standard Bayonet / Cam Harley Style Vented 2.5" Gas Cap - Chrome
10 reviews $26.61

Cycle Standard 22mm Petcock Harley-Davidson Style - Chrome - Left Hand Outlet
27 reviews $27.82

British Standard 1/4 inch BSP Petcock Fuel Valve - Reserve - For Triumph BSA Norton
16 reviews $18.14

Lowbrow Customs Banded Screw-In Gas Cap for Harley-Davidson 1996 & later - Aluminum
10 reviews $38.49

Pingel 3/8 inch NPT Power-Flo Petcock - Round Body - Chrome - Backward
$131.95

Pingel 3/8 inch NPT Power-Flo Petcock - Hex Body - Chrome - Forward
$131.95

Cycle Standard 1/4 inch NPT Lever Petcock - Solid Brass
34 reviews $21.99

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

Golan Products Inc. 22MM Click-Slick Petcock - Round Body - Raw Brass - Downward
$130.95

Golan Products Inc. 22MM Click-Slick Petcock - Round Body - Black - Forward
$130.95

Drag Specialties Fat Bob Style Gas Tanks - 1948-1984 Harley-Davidson FX/FL - 3.5 Gallon
1 review $260.95

Lowbrow Customs Finned Thread-In Gas Cap for Harley-Davidson 1996 & later - Polished
26 reviews $42.34

Cycle Standard Laredo Gas Tank - Center Filler
$239.99

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

Lowbrow Customs Brass Gas / Oil Filler Cap with Weld-In Steel Bung - Unvented
5 reviews $39.99

Cycle Standard Custom Flush Mount Chrome Pop-Up Gas Cap and Weld In Bung
5 reviews $78.64

Cycle Standard 22mm Petcock Harley-Davidson Style - Chrome - Dixie - Straight Outlet
1 review $9.72 $21.99

Cycle Standard Bayonet / Cam Harley Style Vented 2" Gas Cap - Black
29 reviews $13.30

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Left Hand Outlet
20 reviews $27.82

Cycle Standard Laredo Ribbed Gas Tank - Offset Filler
3 reviews $219.99

British Standard 1/4 inch BSP Petcock Fuel Valve - Main - No Reserve - For Triumph BSA Norton
15 reviews $18.14

Cycle Standard 22mm Petcock Round Body Solid Brass Harley-Davidson Style - Left Side Position
14 reviews $53.23

Cycle Standard Pop-Up Gas Cap - Chrome - Vented - for Harley 1996 & later
11 reviews $42.34

British Standard Gas Tank Mounting Kit Triumph 1963-67 T120 TR6 T100 TR5 OEM # 00-0088
9 reviews $41.66

Lowbrow Customs Domed Screw-In Gas Cap for Harley-Davidson 1982-1995 / Modern Triumph Bonneville T100 / T120, Scrambler, Thruxton - Brass
8 reviews $65.99

Lowbrow Customs Dished Screw-In Gas Cap for Harley-Davidson 1996 & later - Brass
15 reviews $65.99

Lowbrow Customs Brass Gas / Oil Filler Cap - Unvented
9 reviews $27.99

Lowbrow Customs Frisco Mount Sportster Gas Tank - Narrow - Bayonet Filler - 2.1 gallon
6 reviews $189.99

Colony #3382-14 Gas Tank Mount Kit 1958-85 Harley-DavidsonSportster XL
1 review $37.40

Cycle Standard Mustang Gas Tank - Dual Filler - 3.3 Gallon
$175.99

Colony #9892-18 Gas Tank Mounting Kit 1937-1975 Harley-Davidson Big Twin 1972-1972 FX - CAD Plated
3 reviews $15.84

British Standard Triumph Gas Tank Mounting Kit 650cc 68-70 500cc 68-74
19 reviews $40.70

Pingel 22MM Power-Flo Petcock - Round Body - Brass - Inward
$152.95

Pingel 22MM Power-Flo Petcock - Hex Body - Chrome - Forward
$152.95

Lowbrow Customs Frisco Mount Banana Gas Tank - Bayonet Filler - Shallow Tunnel
2 reviews $149.99

Lowbrow Customs 22mm to 3/8 inch NPT Brass Petcock Adapter Nut
13 reviews $20.89

Lowbrow Customs 22mm to 1/4 inch NPT Chrome Petcock Adapter Nut
7 reviews $20.89

Cycle Standard 1/4 inch NPT Petcock Black - 90 Degree
8 reviews $27.82

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Right Hand Outlet
13 reviews $27.82

Lowbrow Customs Brass Gas Filler Cap with Weld-In Steel Bung - Vented
8 reviews $44.99

Lowbrow Customs Banded Screw-In Gas Cap for Harley-Davidson 1982-1995 / Modern Triumph Bonneville T100 / T120, Scrambler, Thruxton - Brass
5 reviews $65.99

Pingel 3/8 inch NPT Power-Flo Petcock - Hex Body - Brass - Inward
$131.95

Golan Products Inc. 3/8 inch NPT Click-Slick Petcock - Round Body - Black - Backward
$130.95

Golan Products Inc. 22MM Click-Slick Petcock - Round Body - Raw Brass - Inward
$130.95

Golan Products Inc. 22MM Click-Slick Petcock - Round Body - Raw Brass - Backward
2 reviews $130.95

Golan Products Inc. 22MM Click-Slick Petcock - Round Body - Black - Inward
$130.95

Golan Products Inc. 22MM Click-Slick Petcock - Round Body - Black - Downward
$130.95

Prism Supply Co. 22mm Polished Stainless Steel Petcock
$129.99

Lowbrow Customs 22mm to 3/8 inch NPT Chrome Petcock Adapter Nut
11 reviews $20.89

Lowbrow Customs Domed Screw-In Gas Cap for Harley-Davidson 1996 & later - Aluminum
9 reviews $38.49

Bates 1/4" NPT Petcock Conversion Kit 1940-65 H-D Big Twins and 45”/750 cc Sidevalves - CAD Plated
4 reviews $56.19

Cycle Standard Pop-Up Gas Cap Large Diameter - Chrome - Dummy - for Harley 1996 & later
2 reviews $12.44 $31.89

Cycle Standard 22mm Petcock Harley-Davidson Style - Chrome - Straight Outlet
17 reviews $27.82

Drag Specialties Vented Screw-In Gas Cap - Chrome - 1982-1996 Harley-Davidson
1 review $17.95

EMGO Triumph / BSA / British Motorcycle Gas Tank Cap OEM # 83-3875
24 reviews $17.64

Lowbrow Customs Aluminum Gas / Oil Filler Cap - Unvented
5 reviews $19.99

Cycle Standard Pop-Up Gas Cap Large Diameter - Black - Dummy - 1996 - Up Harley-Davidson
1 review $31.57

How-to Select a Killer Custom Motorcycle Gas Tank & Its Accessories Choosing a Gas Tank for Your Motorcycle If you are in search of a killer custom motorcycle gas tank, you are in the right place. Lowbrow Customs has a great selection of some ...

Choosing a Gas Tank for Your Motorcycle

If you are in search of a killer custom motorcycle gas tank, you are in the right place. Lowbrow Customs has a great selection of some of the most sought-after custom motorcycle gas tanks available. These are high-quality Lowbrow Customs gas tanks that you see on some of the most popular builds out there.

We have a nice selection of Sportster® gas tanks that really can transform the look of your build. Classic style Sportster® gas tanks like the original P-Nut Deep Tunnel or Mid-Tunnel gas tanks which have that smooth round look so many builders prefer. Maybe the Narrow Sporty Frisco Gas Tank is more your speed with its straight lines and front forward teardrop style.

If you need just a straight-forward replacement Sportster® motorcycle tank, we have that too. Lowbrow Customs also carries custom motorcycle tanks for Big Twins, vintage motorcycle gas tanks, teardrop gas tanks, or old school chopper gas tanks like the classic coffin tank. All of our custom Harley fuel tanks are made from high quality steel and are professionally welded. The custom motorcycle gas tanks come pre-sanded ready for paint.

We always recommend that you pre-fit any aftermarket motorcycle gas tank before painting. Be sure to check for clearance or mounting issues as different combinations of triple trees, risers, and handlebars may cause clearance issues when turning.

Custom Motorcycle Gas Tank Mounting Hardware and Accessories

Now that you have your gas tank picked out, be sure to check out our selection of gas tank mounting hardware and accessories. We have some of the coolest gas caps you can find like sportster flush mount gas caps. From the classic spinner sportster gas cap with the 3-prong design to standard replacement gas caps and pop-up gas caps.

We carry a full selection of mounting hardware from Colony™ to help get the tank mounted properly. We also carry a nice assortment of motorcycle fuel petcocks, weld in tank bungs, and the best fuel reserve bottles in the market. If you are looking for a custom motorcycle gas tank, Lowbrow Customs is the place to be.

Custom motorcycle gas tanks for sale combined with an assortment of fuel petcocks, caps, mounting hardware and accessories. All in one easy to use website ready to ship to your door. Last but not least, if you are totally new to customizing your gas tank, watch our video how to mount a gas tank for detailed steps that you can follow.

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