Steel Thunder Custom Cycles - aftermarket motorcycle parts for Harley-Davidson and American custom bikes.
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Steel Thunder Custom Cycles

152 York Drive

Marshfield, MO 65706

417-468-2326

Gas Tanks for Sportsters

Dash/Instrument Panels

Frame/Body Section (sheet metal)

Gas Tanks for American V-Twin Custom and Harley Davidson© Motorcycles

Gas Tanks for Sportsters -

Gas Caps are at bottom of page. Call toll-free to order: 1-866-889-7828. 9-5 CST M-F.

Note: Tanks must be pressure tested, sealed and pre-mounted on frame to verify compatibility of all related parts before painting 

Mustang Style Gas Tank for most American Motorcycles by Paughco.  Made in the USA.

Mustang Style Gas Tanks For Most Models - Single or Dual Cap - by Paughco

These 4.75 gallon mustang style gas tanks have a left side 13/16" external thread fuel valve connection. Will accept 3/8" or 1/4" custom fuel valves. They are 19 1/2" long, 13" wide and 8" high with a tunnel that measures 19 1/2" long X 2 3/16" wide and 4 1/4" deep. They are also indented on the bottom for rocker box clearance. "Saddle style" mount front and rear. Centerline hole to hole on mounting bracket is 19 3/4". Available for single or dual gas cap. On the dual cap tank, only the right cap is functional. Made in the USA.

All Paughco tanks are pressure tested and unpainted. As with any new gas tank installation, always test fir tanks to frame and related components, pressure test and seal with #MU05419 tank sealant & cleaner kit.
Single cap - Part#:MU81018 - $173.42 including shipping.

Dual cap - Part#:BC59-9222 - $176.56 including shipping.

CAP FOR ABOVE TANKS (BUY TWO FOR DUAL CAP): Part#MU80001 - STOCK STYLE GAS CAP FOR 1936/EARLY 1973 TANKS - The vented cap fits all Harley-Davidson® tanks 1936/Early 1973 and most custom tanks. Vented ... $4.99 purchased with tank (Call to order alone, shipping will be added. Please note that we have a $35 minimum order.)


Bobber Gas tank for custom use.  Weld on mounts.  Choose with or without gas cap  hole.

Click to see larger image

Details of underside and hardware for Bobber gas tank.

Sportster Style Bobber Gas Tank for Custom Use - V-Factor

Raw steel 2.3 gallon tank. Weld on brackets for custom use. Includes hardware.

#MU81084 - Gas tank designed for use with 1982/Later screw in gas cap ... $216.89 including shipping*.

Stretched Chopper Gas Tanks feature indented sides.

Flush type mounting brackets.

Hardware included.

STRETCHED CHOPPER GAS TANKS FOR CUSTOM FRAMES - V-Factor

Raw Steel, Indented Sides.
Designed for custom frames with stretched backbones (tunnel measures 2 1/2" wide.)
Weld-to-frame Brackets recess into the bottom of the tank for a hidden look.
Rubber isolated mounting brackets to prevent vibration cracks.
Tapped 3/8-24 at the rear of the tank for crossover line (line not included).
Use with 13/16" (22mm) Fuel Valve.
Requires 1982/Later (screw-type) Vented Gas Cap. (Gas caps lower on page.)

Part#: MU81085 - 22" Tunnel Length, 4.1 Gallon ... $329.13 including free shipping*

Part #: MU81086 - 24" Tunnel Length, 5.4 Gallon ... $417.74 including free shipping*

 

4 inch Stretched One Piece gas tank for Softail and FXWG and custom.

4 inch Stretched One Piece Gas Tank for Softail and FXWG - by V-Factor

We have taken our extremely popular 2" stretched gas tank and welded 2" false tips on them to come up with this 4.2 gallon one piece Fat Bob style tank. For a total of 4" of stretch, this tank was designed for the custom builder and may require some seat alterations or a custom seat. Included are all the necessary parts as shown to rubber mount the tank. Use with the OE style 13/16" fuel petcock and screw in style gas caps. Fits Softail models 1984/1999 and FXWG 1985/1986 as well as many custom frames designed for flatside applications.
Part#:MU81062 - $387.72 including free shipping.*

Note: These tanks require blending body work, paint preparation, sealing and pressure testing. Always test fit a new gas tank on the frame with the related components before painting. Gas caps and fuel valve not included.

3 inch stretched gas tank, 3.8 gallon, raw steel, choice of gas cap styles.  Fits Softail and FXWG.

 

Screw-in style cap (not included)

Screw-In style Cap

 

3 Inch Stretched, 3.8 Gallon, Raw Steel One Piece Gas Tank for Softail and FXWG - V-Factor

These are the custom Gas Tank you've been searching for. They fit Softail 1984/1999, FXWG 1985/1986 and custom applications. This raw steel, trick tank comes ready for a screw-in gas cap. Produced from 16 gauge steel, it has a 3.8 gallon fuel capacity. The fuel valve mounting location is on the left side and is located 6 inches from the front of the tank. The tank's 1 1/2 inch rear inset provides just enough space for most seats. It includes mounting brackets with show chromed beveled washers and countersunk allen head bolts to complement the tank's show quality style. Measures 22 1/2 inches long x 13 inches wide at the front and tapers down to 7 inches in the rear. Fits Softail models 1984/1999, FXWG 1985/1986, and custom applications.


Part#MU81071 - Gas Tank designed for 1982/Later screw-in style vented gas cap (not included) ... $357.17 including free shipping*


2 inch stretched smooth top FXR one piece gas tank with choice of pop up caps.

2 inch Stretched Smooth Top FXR One Piece Gas Tank

This one piece FXR gas tank will give you the flowing lines and stretched looks of today's custom cycles. The stretch is obtained during the initial manufacturing process and not by using weld on sections. The tank has a capacity of 4.2 gallons and has a seat pocket in the rear section to fit most narrow seats. Approx. tunnel length 21".

#KW20108 - Fits FXR models, comes with paintable pop up gas cap ... $326.25 including shipping*

#KW20109 - Fits FXR models, comes with chrome pop up gas cap ... $330.75 including shipping*

2 inch stretched smooth top dyna model one piece gas tank with choice of pop up caps.

2 inch Stretched Smooth Top Dyna Model One Piece Gas Tank

This one piece Dyna gas tank will give you the stretched looks and flowing lines associated with Low Rider custom bikes. The stretch is obtained during the initial manufacturing process and not by using weld on sections. The tank has a capacity of 4.2 gallons and has a seat pocket in the rear section to fit most narrow seats. Approx. tunnel length 21-1/8".

#KW20112 - Fits Dyna Glide models, comes with paintable pop up gas cap ... $301.14 including shipping*

#KW20113 - Fits Dyna Glide models, comes with chrome pop up gas cap ... $330.75 including shipping*

FXR and Dyna quick bob style smooth top gas tank

FXR & Dyna Quick Bob Style Smooth Top Gas Tank

These tanks have an improved front and rear mounting and are ideal for applications where a tank mounted speedo is not wanted. FXR tunnel 23", Dyna tunnel 20-7/8".

#KW20106 - Fits FXR models form 1984 to 1994, comes with paintable pop up gas cap ... $292.50 including shipping*

#KW20107 - Fits FXR models form 1984 to 1994, comes with chrome pop up gas cap ... $297.00 including shipping*

#KW20110 - Fits Dyna Glide models 1990 to Present, comes with paintable pop up gas cap ... $217.53 including shipping*

#KW20111 - Fits Dyna Glide models 1990 to Present, comes with chrome pop up gas cap ... $223.03 including shipping*

Stretched Fat Bob styel gas tank for softail and FXWG motorcycles.

STRETCHED FAT BOB GAS TANKS FOR SOFTAIL & FXWG

These 5 gallon raw steel flatside Fat Bob style Gas tanks include a 3" stretch for a great custom look and feature your choice of gas cap styles. These tanks are designed to accept a Fat Bob style dash assembly and utilizes the OE style 13/16" fuel petcock. Also fits many custom flatside frame applications.

Tank set designed for OE style 1982/Later screw-in gas caps (gas caps not included). Part#:81067 Use with 1982/Later screw-in gas caps.
#MU81067
$372.42


Note: As always, these tanks must be pressure tested, sealed and pre-mounted on frame to verify compatibility of all related parts before painting.

4 inch stretched chopper gas tanks.

Click for more photos

Flush mount bung.

Flush Mount Bung

Raised bung.

Raised Bung

Pop-Up gas cap. Pop-Up Gas Cap

Spinner gas cap.

Spinner Gas Cap

Requires 82/later gas cap.

1982/Later - gas cap not included

4 Inch Stretched Chopper Gas Tanks for Custom Frames by V-Factor

4 inch stretch, 4.1 gallon capacity.

Frame Requirements:
A) 4 inch stretch in the front down tubes.
B) 3 inch minimum stretch in the backbone.
C) Backbone O.D. cannot exceed 1 3/4 inches.

  • Mounting brackets are rubber isolated to prevent vibration.
  • 'Weld to frame' bracket recess in the bottom of the tank for a hidden look.
  • Includes chrome plated pop-up gas cap.
  • Tapped 1/8 27 NPT at rear of tank for gas crossover line (not included).
  • Use with 13/16 inch (22mm) fuel valve.

Raw Steel.

Prices include free shipping!

Part #
Bung Style
Cap Style
Price
Buy Now
MU81075
Flush 
Pop-Up
$371.79
MU81076
Raised
Pop-Up
$371.79
MU81089
Flush
Spinner
$421.34
MU81090
Raised
Spinner
$421.34
MU81082
1982/Later
cap not incl.
$377.51

 

More Photos

4.5 inch stretched chopper gas tanks.

Click for more photos

Flush mount bung.

Flush Mount Bung

Raised bung.

Raised Bung

Pop-Up gas cap. Pop-Up Gas Cap

Spinner gas cap.

Spinner Gas Cap

Requires 82/later gas cap.

1982/Later - gas cap not included

4 Inch Stretched Chopper Gas Tanks for Custom Use

4.5 inch stretch, 4.7 gallon capacity.

Frame Requirements:
A) 4 inch stretch in the front down tubes.
B) 3 inch minimum stretch in the backbone.
C) Backbone O.D. cannot exceed 1 3/4 inches.

  • Mounting brackets are rubber isolated to prevent vibration.
  • 'Weld to frame' bracket recess in the bottom of the tank for a hidden look.
  • Includes chrome plated pop-up gas cap.
  • Tapped 1/8 27 NPT at rear of tank for gas crossover line (not included).
  • Use with 13/16 inch (22mm) fuel valve.

Raw Steel.

Part #
Bung Style
Cap Style
Price
Buy Now
MU81073
Flush 
Pop-Up
$380.52
MU81074
Raised
Pop-Up
$391.37
MU81087
Flush
Spinner
$421.34
MU81088
Raised
Spinner
$421.34
MU81081
1982/Later
cap not incl.
$377.51

More Photos

NEW! 6 inch stretch!

6 inch stretched chopper gas tanks for custom frames.

detail of stretched tank with 24 inch tunnel.

Pop-Up gas cap. Pop-Up Gas Cap

 

Spinner gas cap.

Spinner Gas Cap

6 inch Stretched Chopper Gas Tanks for Custom Frames - V-Factor Motorcycle Parts

These stretched gas tanks are available with your choice of a flush mounted pop-up style gas cap or with a pop-up style gas cap on a raised bung.
They are designed for custom frames with stretched backbones that will accept the 24 inch tunnel length (tunnel measures 2 1/2 inches wide).
'Weld to frame' brackets recess in the bottom of the tank for a hidden look.
Mounting brackets are rubber isolated to prevent vibration cracks.
Includes chrome plated pop-up gas cap (order 80018 for replacement cap).
Tapped 1/8 27 NPT at rear of tank for gas crossover line (not included).
Use with 13/16" (22mm) fuel valve. Holds 5.3 gallons.

#MU81077 - Tank with flush mount Pop-Up gas cap ... $429.84 including free shipping*

#MU81078 - Tank with raised bung and Pop-Up gas cap ... $452.43 including free shipping*

#MU81091 - Tank with flush mount Spinner style gas cap ... $482.40 including free shipping*

#MU81092 - Tank with raised bung and Spinner style gas cap ... $482.40 including free shipping*

5.4 gallon stretched  chopper gas tank for custom frames, has 25.5 inch tunnel length.  Comes with pop-up gas cap.

5.4 Gallon Tank

Pop-up gas cap and hardware are included with tank.

Spinner gas cap option for stretch gas tank.

Spinner Gas Cap Option

STRETCHED CHOPPER GAS TANK FOR CUSTOM FRAMES - V-Factor

Raw Steel.
Designed for custom frames with stretched backbones that will accept 25.5" tunnel length (tunnel measures 2 1/2" wide).
Weld to frame Brackets recess in the bottom of the Tank for a hidden look.
Rubber isolated Mounting Brackets to prevent vibration cracks.
Includes chrome plated Pop-up Gas Cap.
Tapped 1/8-27 NPT at rear of Tank for Crossover Line (not included).
Use with 13/16" (22mm) Fuel Valve.

5.4 Gallon Tank with pop-up style gas cap - Part#:MU81079 ... $488.21 including free shipping*

5.4 Gallon Tank with spinner style gas cap - Part #MU81093 ... $524.07 including free shipping*

Chopper gas tank shown on frame with 7 inch backbone stretch. +7 inch backbone stretch frame shown.

5.3 gallon chopper gas tank for custom frames.
5.3 Gallon Tank

Pop-up gas cap and hardware are included.

Spinner gas cap option for streched gas tank.

Spinner Gas Cap Option

STRETCHED CHOPPER GAS TANK FOR CUSTOM FRAMES - V-Factor

Raw Steel.
Designed for custom frames with stretched backbones that will accept the 25" tunnel length (tunnel measures 2 1/2" wide).
Weld-to-frame Brackets recess in the bottom of the tank for a hidden look.
Rubber isolated mounting brackets to prevent vibration cracks.
Includes Hardware and chrome plated pop-up Gas Cap.
Tapped 1/8-27 NPT at rear of Tank for Gas Crossover Line (not included).
Use with 13/16" (22mm) Fuel Valve.

5.3 Gallon Tank  with pop-up style gas cap - Part#:MU81080 ... $429.84 including free shipping*

5.3 Gallon Tank  with spinner style gas cap - Part#:MU81094 ... $482.40 including free shipping*


Chopper gas tank shown on frame with 7 inch backbone.

FUEL TANK LINER & PREP FOR ALL GAS TANKS - Part#:mu05419 - Prevent rust and leaks in almost every type of fuel tank with KREEM gas prep kit and liner. Prep kit removes dirt and rust while properly preparing your tank for an application of KREEM's gas tank liner. This specially formulated liner is alcohol resistant and withstands gasohol and most octane boost formulas. One Combo Pack is recommended for every three gallons of gas tank capacity. NOT SHIPPABLE BY AIR.
" KREEM" Combo Pack (1 pint of Prep A, 1/2 pint of Prep B and 1 pint of Tank Liner) Sold as kit.

Option #1 - SAVE $ - purchase with tank (or other MU# item) to save shipping.  $39.95 each kit.

 
Option #2 - PURCHASED ALONE ... $49.95 each kit. Includes shipping.

                     

Stock Replacement Pop Up Gas Caps
These caps ship free with tank. Sold alone, add $5.00 for shipping. Will not show on cart.

UPGRADE FROM YOUR SCREW-IN STYLE GAS CAP! These pop up gas caps allow you to replace the stock screw in style gas cap with these very cool looking pop up versions. Just push in the cap, twist, and the cap will pop up. (If purchasing one cap for a single cap tank, you will need vented.)

            • #KW20124 Chrome vented pop up gas cap ... $41.36
          • #KW20125 Chrome non-vented pop up gas cap ... $47.79
Tamper Resistant gas caps

NEW - TAMPER RESISTANT GAS CAPS FOR ALL MODELS 1982/LATER - KuryAkyn USA

Tamper resistant cap mounts flush with the trim ring and requires the spanner tool for installation and removal of the cap.
The trim ring protects the tank opening from gas pump nozzle damage while providing the illusion that the eight screws are holding it in place.
Includes instructions.

Part#:0180016 - Chrome Plated Vented with right hand thread, Fits all models 1982/Later ... $62.50 including shipping*

Part #: 0180017 - Chrome Plated Non-Vented with left hand thread, Fits all models 1982/Later ... $62.50 including shipping*

Save $$$ when you buy one of each - #0180016/80017 ... $107.99 including shipping*


Kuyyakyn LED fuel and battery guage:  The Informer

THE INFORMER LED FUEL/ BATTERY GAUGE - Kuryakyn

Sleek, low-profile design incorporates a fuel and battery gauge in one.
Color-coded LEDs make it much easier to read than OEM gauges.
Daylight sensor automatically adjusts the brightness of the LEDs.
Includes wiring harness and instructions.
Perfect match for flush-mount gas caps .
Replaces the OEM fuel gauge on all H-D models with fuel gauge in the left gas cap .

Part#: DS1914-0006 - LED fuel/battery gauge ... $114.98 including shipping*

NOTE: THIS IS A SPECIAL ORDER ITEM. WHILE MOST OF OUR ITEMS SHIP THE SAME OR NEXT BUSINESS DAY, THIS ITEM WILL TAKE A FEW EXTRA DAYS TO SHIP.  SPECIAL ORDERS CANNOT BE EXPRESS SHIPPED. NO RETURNS.

This item appears on page 778of the Drag Specialties Fatbook. We carry everything in the Fatbook, as well as all the items in the catalogs on this page.

Gas Caps with paint protector .

The Bandit (Peak Shape)

GAS CAPS WITH PAINT PROTECTOR FOR ALL MODELS 1982/LATER - Landmark

This system was designed to protect your paint from vapors and nozzle damage during fueling. With the spanner tool and the paint protector's O ring seal, the paint protector can be easily installed or removed. The gas cap completely covers the paint protector giving a clean low profile look. The paint protector is constructed from machined aluminum and is teamed up with a polished stainless steel cap. Available for models using a single vented cap, dual cap or models that incorporate a tank mounted fuel gauge. The fuel gauge type eliminates the fuel gauge more traditional style dual cap Fat Bob look. All vented gas caps are designed to breathe both ways to prevent pressure build up from heat expansion and will work with all high performance carburetors. Fits all models with screw type gas tank 1982/Later as listed.
Bandit style set fits 1982/Early 1996. Made in the U.S.A.

Part#:MU80000 - Bandit set, one vented and one non-vented ... $102.78 including free shipping*

Spinner Gas Cap.
V-FACTOR SPINNER GAS CAPS FOR 1982/LATER MODELS

CNC machined from billet aluminum.
Vented cap with right hand thread.
See below for availability of finishes.
Cap measures 3/4" tall (from the gasket surface) and has a 4 1/2" circumference at the spinners.

Part#:MU80027 Chrome Plated Spinner Gas Cap for 1982/Later style bung ... $115.40 including shipping*

Part #: MU80006 Black Spinner Gas Cap for 1982/Later style bung ... $108.30 including shipping*

Choppers Inc .44 magnum bullet spinner gas cap for weld-in use.

Choppers Inc spinner .44 magnum bullet gas cap shown installed.

Fits bungless custom gas tank.

NEW! SPINNER GAS CAP FOR WELD-IN USE - Choppers Inc. 

Polished.
Features authentic .44 magnum bullet shell casings inserted into the vented-type Cap.
Includes a steel bung that must be welded into the gas tank.
Cap is CNC machined from billet aluminum.

Made in the U.S.A. by Choppers Inc.

Part#:MU80050 - Fits Bungless Custom Gas Tank ... $171.80 including free shipping*



Pop-Up gas cap for weld-in use.

POP-UP GAS CAP FOR WELD-IN USE - V-Factor

Chrome plated vented gas cap pops up for easy removal and mounts flush in the down position.
Steel bung is designed to be welded flush with the gas tank.

1 5/8" O.D. Part#:MU80024 ... $101.15 including shipping*



Spinner gas cap for weld-in use.

SPINNER GAS CAP FOR WELD-IN USE - V-Factor

Chrome Plated.
Kit requires a 1 13/16" I.D. hole in the gas tank for the steel bung to be welded in .
Vented Gas Cap is machined from billet aluminum & includes a sealing O ring
Cap measures 1 1/4" tall & has a 3 3/4" circumference at the spinners.

Kit with Spinner Cap & Weld-In Bung - Part#:MU80026 - Fits Bungless Custom Gas Tank ...$101.15 including free shipping*


Smoothie Dash Cover for Fat Bob gas tanks.
CUSTOM SMOOTHIE DASH COVER FOR FAT BOB GAS TANKS

Features of this dash cover are the indicator lights and ignition switch holes have been removed for that clean custom look. Fits over large Fat Bob style speedometer with 2 light, 3 light or Late model instrument base plate and 2 piece Fat Bob style gas tanks. Complete with rubber trim. Part#:MU48125 ... $49.98 including shipping*

MORE DASH / INSTRUMENT PANELS & RELATED ITEMS HERE

Gas Tanks for Sportsters   -  -  Petcocks / Fuel Valves

*FREE SHIPPING APPLIES IN CONTINTENTAL 48 UNITED STATES ONLY. AK, HI and APO/FPO will have additional shipping fees. We ship only within the U.S.A. and to APO/FPO (military addresses; weight and size restrictions apply.). We do not accept foreign credit cards. We do not ship to Puerto Rico.

Prefer to call in your order to Steel Thunder? Call toll-free: 1-866-889-7828. 9-5 CST M-F.

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