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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Golan Products Inc. 22MM Click-Slick Petcock - Round Body - Chrome - Forward
$190.95

Golan Products Inc. 22MM Click-Slick Petcock - Round Body - Chrome - Downward
$190.95

Golan Products Inc. 22MM Click-Slick Petcock - Round Body - Chrome - Backward
$190.95

Pingel Fuel Valve Rebuild Kit - 3 Pack
$109.95

Pingel In-Line Custom Fuel Valve
$135.95

Pingel 3/8 inch NPT Power-Flo Petcock - Round Body - Brass - Inward
$139.95

Pingel 3/8 inch NPT Power-Flo Petcock - Hex Body - Black - Inward
$156.95

Pingel 3/8 inch NPT Power-Flo Petcock - Round Body - Chrome - Backward
$139.95

Pingel 3/8 inch NPT Power-Flo Petcock - Hex Body - Chrome - Forward
$139.95

Pingel 3/8 inch NPT Power-Flo Petcock - Round Body - Chrome - Forward
$139.95

Pingel 22MM Power-Flo Petcock - Hex Body - Brass - Inward
$161.95

Pingel 22MM Power-Flo Petcock - Round Body - Brass - Inward
$161.95

Pingel 22MM Power-Flo Petcock - Hex Finned Body - Chrome - Inward
$161.95

Pingel 22MM Power-Flo Petcock - Round Finned Body - Chrome - Inward
2 reviews $161.95

Pingel 22MM Power-Flo Petcock - Round Body - Chrome - Forward
1 review $161.95

Drag Specialties Gas Tank with Aero-Style Gas Cap - 1995-03 Harley-Davidson Sportster - 3.3 Gallon
$269.81

Drag Specialties 5-Gallon Fat Bob Gas Tank for 1948-1984 Harley FX/FL - Raw Steel
$330.58

Colony #3576-1 Gas Tank Rubber Divider 1936-1938 Harley-Davidson Big Twins
$19.80

Colony #3554-4 Gas Tank Mounting Kit 2008-Up Harley-Davidson FLT 2017-Up M8 - Chrome Plated
$6.66

Colony #3543-6 Gas Tank Name Plate Gaskets 1940-1946 Harley-Davidsons
$17.25

Colony #3492-2 Gas Tank Top Screw Bungs 1937-1952 Harley-Davidson 45's 1937-1973 Servi-car
$19.36

Colony #3478-10 Gas Tank Mount Kit 1979-1981 Harley-Davidson XLCH Sportster - Chrome Plated
$18.15

Colony #3477-8 Gas Tank Mount Kit 1952-1978 Harley-Davidson K/KH Sportster - Chrome Plated
$8.47

Colony #3476-10 Gas Tank Mount Kit 1979-1981 Harley-Davidson XLCH Sportster - Zinc Plated
$11.50

Colony #3474-8 Gas Tank Mount Kit 1952-1978 Harley-Davidson K/KH Sportster - Parkerized
$16.04

Colony #3419-4 Spacer Replaces Harley-Davidson OEM #61135-52 - CAD Plated
$10.89

Colony #3382-14 Gas Tank Mount Kit 1958-1985 Harley-Davidson Sportster XL - Chrome Plated
1 review $37.40

Cycle Standard 1/4 inch NPT Petcock Black - Straight
8 reviews $32.62

Colony #3340-3 Gas Tank Fitting Kit 1949 Harley-Davidson Big Twins - CAD Plated
1 review $26.00

Colony #3337-3 Gas Tank Fitting Kit 1964 Harley-Davidson Big Twins - CAD Plated
$26.00

Lowbrow Customs Brass Gas / Oil Filler Cap with Weld-In Steel Bung - Unvented
5 reviews $48.04

Kustom Tech 3/8 inch NPT Custom Petcock - Polished Brass
2 reviews $130.21

Lowbrow Customs Domed Screw-In Gas Cap for Harley-Davidson 1982-1995 / Modern Triumph Bonneville T100 / T120, Scrambler, Thruxton - Brass
10 reviews $83.23

Lowbrow Customs Domed Screw-In Gas Cap for Harley-Davidson 1982-1995 / Modern Triumph Bonneville T100 / T120, Scrambler, Thruxton - Aluminum
2 reviews $48.55

Cycle Standard Narrow Alien Motorcycle Gas Tank - 2.1 gallon
9 reviews $205.99

Drag Specialties Diamond Pattern Gas Tank 2004 - 2006 Sportster XL Models
5 reviews $328.52

Drag Specialties Diamond Pattern Gas Tank 2007-2022 EFI Harley-Davidson Sportster XL Models
1 review $317.19

British Standard Gas Tank Mounting Kit Triumph 1963-67 T120 TR6 T100 TR5 OEM #00-0088
11 reviews $49.44

Colony #3039-12 Gas Tank Mounting Kit 1937-1952 Harley-Davidson 45 Solo 1937-Up Servi-car - Parkerized
2 reviews $15.62

Colony #2346-3 Instrument Panel Mounting Button Allen Kit 2006-Up Harley-Davidson Dyna - Chrome Plated
$6.33

Colony #3038-18 Gas Tank Mounting Kit 1937-1975 Harley-Davidson Big Twins 1971-1972 FX - Parkerized
1 review $17.42

Colony #2266-8-P Gas Tank Smooth Allen Mounting Kit 2004-Up Harley-Davidson Sportster - Chrome Plated
1 review $11.90

Colony #2530-6-P Fuel Tank Mounting Smooth Allen Kit 1985-1986 Harley-Davidson FXWG/FXST/FXSB/FXEF - Chrome Plated
$21.57

Colony #2523-5-P Fuel Tank Smooth Button Head Mounting Kit 1988-1994 Harley-Davidson FXR - Chrome Plated
1 review $13.92

Colony #2524-2-P Fuel Tank Smooth Mounting Kit Pre-1984 Harley-Davidson Big Twins - Chrome Plated
1 review $10.44

British Standard 1/4 inch BSP Petcock Fuel Valve - Reserve - UK Made For Triumph BSA Norton
14 reviews $48.36

Lowbrow Customs Competition Screw-In Gas Cap for Harley-Davidson 1996 & later - Black
32 reviews $42.17 $51.50

Colony #2817-18 Oversized Top of Tank Screw and Washer Repair Kit 1918-1952 Harley-Davidson - Parkerized
$30.04

Colony #2703-7 Gas Tank Shut Off Rod Upper Kit 1940-1965 Harley-Davidson Big Twin/45s - Parkerized
$25.85

Colony #2821-3 Gas Tank Fitting Kit 1940-1949 Harley-Davidson Big Twin - Chrome Plated
1 review $28.00

Colony #2436-10 #2438-5 Gas Tank Pike Nut Mounting Kit 1991-Up Harley-Davidson Dyna - Chrome Plated
1 review $27.23

Colony #2462-9 Gas Tank Clip Screw Kit 1918-1924 Harley-Davidson JD - Nickel Plated
$20.19

Colony #2528-10 Gas Tank Allen Mounting Kit 1990-1995 Harley-Davidson Softail - Chrome Plated
$17.40

Colony #2530-6 Gas Tank Allen Mounting Kit 1985-1956 Harley-Davidson FXWG/FXST/FXSB/FXEF - Chrome Plated
1 review $16.70

Colony #2438-5 Gas Tank Pike Nut Mounting Kit 2000-Up Harley-Davidson Softail - Chrome Plated
1 review $14.83

Colony #2524-2 Gas Tank Allen Mounting Kit Pre-1984 Harley-Davidson Big Twin - Chrome Plated
$9.05

Colony #9894-12 Gas Tank Mounting Kit 1937-1952 Harley-Davidson 45 Solo 1937-Up Servi-car - Chrome Plated
$18.15

Lowbrow Customs WX Split Gas Tanks - Bolt-On for 1936 - 1984 Big Twin Harley-Davidsons - 2.25 gallon
84 reviews $399.99

Colony #8821-18 Top of Tank Screw & Washer Kit 1918-1936 All Harley-Davidson 1936-1952 45s - Nickel Plated
$31.14

Colony #8822-18-OS Oversize Top of Tank Screw & Washer Kit 1918-1936 All Harley-Davidson 1936-1952 45s - CAD Plated
$30.04

Colony #7801-2 Gas Tank Shut Off Operating Knob Extension 1940-65 Harley-Davidson
2 reviews $11.96

Kustom Tech Carb Mounted Chrome Petcock for S&S Carburetor
3 reviews $112.38

Lowbrow Customs Narrow Sporty Frisco Gas Tank 2.5 gallon
46 reviews $272.89

Kustom Tech In-Line Brass Motorcycle Petcock
13 reviews $87.36

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 great selection of Sportster® gas tanks that can completely transform the look of your build. Classic choices like the original P-Nut Deep Tunnel and Mid-Tunnel gas tanks offer that smooth, rounded style so many builders love. If clean lines and a front-forward teardrop shape are more your style, the Narrow Sporty Frisco Gas Tank is a perfect fit. For those looking to add vintage chopper flair with a practical twist, the WX Split Gas Tanks stand out with their timeless design and dual-cap functionality, making them a versatile option for any custom build.

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 custom motorcycle 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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