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.

Raw Gas Tanks

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Top view Frisco mount Sportster Gas Tank by Lowbrow Customs — Lowbrow Customs Frisco Mount Sportster Gas Tank - Standard Width - 2.5 gallon
92 reviews $189.99

Lowbrow Customs Narrow Sporty Frisco Gas Tank 2.5 gallon
42 reviews $249.99

Cycle Standard Wassell Peanut Mid-Tunnel Gas Tank 2.1 gallon
44 reviews $179.99

Lowbrow Customs King P-Nut Frisco Shallow Tunnel Gas Tank 2.4 gallon
43 reviews $199.99

Cycle Standard Harley-Davidson Ironhead Sportster 1958 - 1978 Replica Stock Style Gas Tank - 2.4 gallon
51 reviews $164.99

Lowbrow Customs Frisco Mount Sportster Gas Tank - Narrow - 2.1 gallon
59 reviews $199.99

Lowbrow Customs Original P-Nut Tank Deep Tunnel Gas Tank 1.8 gallon
60 reviews $174.99

Lowbrow Customs Frisco Mount Sportster Gas Tank - Standard Width - Bayonet Filler - 2.5 gallon
12 reviews $189.99

Cycle Standard Stock Style Harley Sportster Gas Tank 1986 - 2003 - Left Side Petcock - 2.2 gallon
68 reviews $181.49

Cycle Standard Sportster Style Frisco Mount Gas Tank - Narrow - 2.1 gallon
8 reviews $188.99

Mooneyes Moon Emergency Tank Fuel Reserve Bottle and Carrier
5 reviews $219.99

Lowbrow Customs WX Split Gas Tanks - Bolt-On for 1936 - 1984 Big Twin Harley-Davidsons - 2.25 gallon
78 reviews $389.99

Cycle Standard Blackbird Legacy Gas Tank for 1982 - 2003 Harley-Davidson Sportsters - 3.5 gallon
13 reviews $299.99

Lowbrow Customs Frisco Mount 2007-2022 EFI Sportster Gas Tank - Standard Width - 2.5 gallon
$199.99

Lowbrow Customs Frisco Mount Sportster Gas Tank - Super Narrow - 1.6 gallon
31 reviews $199.99

Cycle Standard Sportster Style Frisco Mount Gas Tank - Standard Width - 2.5 gallon
2 reviews $188.99

Prism Supply Co. 1/4 inch NPT 90 Degree Petcock - Stainless Steel
$129.99

Lowbrow Customs Reproduction Harley Model 125 / Model 165 / Hummer Gas Tank with Key Switch
3 reviews $249.99

Lowbrow Customs Coffin Chopper Gas Tank - 1.4 Gallon - USA Made
$264.95

Cycle Standard Wassell Peanut Deep Tunnel Gas Tank 2 gallon
6 reviews $179.99

Cycle Standard Dished Wassell Peanut Frisco Mount Shallow-Tunnel Gas Tank - 2.2 gal
19 reviews $199.99

Cycle Standard Dished Wassell Peanut Mid-Tunnel Gas Tank - 2.0 gal
13 reviews $199.99

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

Lowbrow Customs P-Nut Mid-Tunnel Gas Tank 1.8 gallon
47 reviews $174.99

Lowbrow Customs Banana Gas Tank - Deep Tunnel - 1.8 gallon
8 reviews $149.99

Cycle Standard Narrow Axed Chopper Motorcycle Gas Tank 1.9 gallon
15 reviews $164.99

Cycle Standard Narrow Wassell Peanut Shallow-Tunnel Gas Tank 1.8 gallon
9 reviews $179.99

Lowbrow Customs Ovate Axed Gas Tank - Super Narrow - 1.6 gallon
10 reviews $174.99

Cycle Standard Narrow Alien Motorcycle Gas Tank - 2.1 gallon
7 reviews $164.99

Cycle Standard Stock Style Harley King Sportster Gas Tank 1995 - 2003 - Left Side Petcock - 2.9 gallon
13 reviews $164.99

Cycle Standard Stock Style Harley-Davidson Sportster Gas Tank 2004-2006 - 2.2 gallon
4 reviews $202.02 $215.50

Cycle Standard Mustang Gas Tank - Single Filler - 3.3 Gallon
3 reviews $175.99

Cycle Standard Axed Chopper Motorcycle Gas Tank 2.2 gallon
33 reviews $164.99

Prism Supply Co. 1/4 inch NPT 90 Degree Petcock - Brass
1 review $109.99

Lowbrow Customs Lowbrow Fuel Reserve Bottle
139 reviews $21.99

Cycle Standard Stock Style Gas Tank 2007-2022 Harley-Davidson Sportster EFI - 2.2 gallon
$223.96 $235.75

Cycle Standard Narrow Ribbed Mustang Gas Tank 2.25 gallon
29 reviews $175.99

Lowbrow Customs P-Nut Frisco Shallow Tunnel Gas Tank 2 gallon
26 reviews $174.99

Lowbrow Customs Aluminum Gas Filler Cap with Weld-In Steel Bung - Vented
6 reviews $37.99

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

Lowbrow Customs Brass Gas Filler Cap - Vented
7 reviews $32.99

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

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

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

Cycle Standard Blackbird Legacy Gas Tank for 2007-2022 EFI Harley-Davidson Sportsters - 3.5 gallon
17 reviews $299.99

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

Lowbrow Customs Aluminum Gas Filler Cap - Vented
4 reviews $24.99

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

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

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

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

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

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

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

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

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

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

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

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

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

Lowbrow Customs Aluminum Gas / Oil Filler Cap with Weld-In Steel Bung - Unvented
4 reviews $32.99

British Standard Sealing Washer for British 1/4 inch BSP Petcocks OEM # 70-7351 - Triumph BSA Norton
15 reviews $6.04

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