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Big Twin Parts

Vintage Harley Davidson Big Twin Motorcycles are some of the most popular platforms for motorcycle customization. The undisputed king of Harley Big Twins is the mighty Knucklehead, but no one can argue the prominence of the Panhead and Shovelhead motors. At Throttle Addiction we carry the Knucklehead parts, Panhead parts, or Shovelhead parts to keep your vintage iron on the road. We have parts for choppers, restoration parts and maintenance items like oil and oil filters.

  • Throttle Addiction Frisco Sportster Gas Tank Throttle Addiction Frisco Sportster Gas Tank

    Frisco Sportster Peanut Gas Tank

    This classic Sportster gas tank has been set up with a low "Frisco" tunnel to maximize fuel capacity and sit high and stylish on the backbone. Commonly refered to as a Peanut Tank,  It will give your chopper or bobber a custom look but still carry...

    $149.99
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  • SALE
    Throttle Addiction Pull Back Rabbit Ear Handlebars - Chrome Throttle Addiction Pull Back Rabbit Ear Handlebars - Chrome

    Throttle Addiction Rabbit Ear Handlebars - Chrome

    Classic style rabbit ear pull back handlebars give you a tight comfortable grip on your bike.  They look great on long raked out choppers or stock rake motorcycles.  The rabbit bar handlebars will put you in a comfortable relaxed riding...

    Was: $109.99
    Now: $79.99
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  • Flanders Style Motorcycle Risers - 6" Flanders Style Motorcycle Risers - 6"

    Flanders Style Motorcycle Risers - 6"

    Throttle Addiction Flanders style risers are constructed from cast stainless steel and polished to a mirror shine.  These require ½” X 20 TPI mounting bolts and work with 1" handlebars. Specs: Stainless steel 6” rise to...

    $109.99
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  • 12" Vintage Ape Hanger Handlebars Throttle Addiction 12" Vintage Ape Hanger Handlebars Throttle Addiction

    Throttle Addiction - 12" Vintage Ape Hangers

    Sometimes old is better and the vintage apes follow that creed.  Unlike more modern styled ape hangers, these have a narrow clamping area and spread out wider towards the gripping area giving the uprights a nice stylish angle.  They're...

    $109.99
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  • Black Motorcycle Fuel Line 1/4" ID Throttle Addiction Black Motorcycle Fuel Line 1/4" ID Throttle Addiction

    Black 1/4" Neoprene Fuel Line

    Black neoprene motorcycle fuel line is reinforced with a high strength rayon mesh. Resists fuel, oil and grease Maximum PSI of 200 with a burst pressure of 450 PSI Sold in 3' lengths, 10' lengths or 25' lengths

    $6.99 - $17.99
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  • Throttle Addiction 1" Chrome Single Cable Harley Motorcycle Throttle Throttle Addiction 1" Chrome Single Cable Harley Motorcycle Throttle

    1" Chrome Single Cable Throttle Assembly

    1” single cable throttle assembly for use on custom Harleys that want a clean handlebar set up.  Clamp assembly is die cast chrome-plated aluminum and throttle tube is plastic.  Dual Allen heads clamp it into place.  For 1”...

    $24.99
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  • Add On - Flanders Style Motorcycle - Risers - 2.5" Throttle Addiction Add On - Flanders Style Motorcycle - Risers - 2.5" Throttle Addiction

    Flanders Style Motorcycle - Risers - 2.5"

    Throttle Addiction Flanders style risers are constructed from cast stainless steel and polished to a mirror shine.  These require ½” X 20 TPI mounting bolts and work with 1" handlebars. Specs: Stainless steel 2.5” rise to...

    $109.99
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  • Add On - Flanders Style Motorcycle - Risers - 4" Throttle Addiction Add On - Flanders Style Motorcycle - Risers - 4" Throttle Addiction

    Flanders Style Motorcycle Risers - 4"

    Throttle Addiction Flanders style risers are constructed from cast stainless steel and polished to a mirror shine.  These require ½” X 20 TPI mounting bolts and work with 1" handlebars. Specs: Stainless steel 4” rise to...

    $109.99
    Add to Cart
  • Vintage Inline Big Twin Springer Front End - Black Vintage Inline Big Twin Springer Front End - Black

    Vintage Harley Big Twin Style Springer Front End - Black

    Vintage style springer front end, replicated after the Harley Davidson Big Twin springer yet incorporates modern upgrades.  Includes chrome top clamp and 3/4" axle kit. Fully assembled with in-line top clamp – 0 degree rake 1” O.D...

    $734.99 - $774.99
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  • Throttle Addiction 11" T-Bars Chrome Harley Dyna Chopper Throttle Addiction 11" T-Bars Chrome Harley Dyna Chopper

    Throttle Addiction - 11" T-Bars - Chrome

    Throttle Addiction 11" T-bars will leave you with a tight aggressive riding stance.  A slight 2” pullback slightly relaxes the wrists for a more comfortable grip.  At 26” wide, you'll have ample control without the "I'm about to hug...

    $109.99
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  • SALE
    Cusom Harley Points Cover - Black - Beautiful F U - Big Twin 5 Hole - Throttle Addiction Custom Harley Points / Timing Cover - Black - Beautiful F U - All Options - Throttle Addiction

    Harley Points Cover - Beautiful F U - Black

    Custom laser engraved "Beautiful F U" Harley points cover!  People are going to want to eyeball your ride anyway, why not have a message or logo that either starts a friendly conversation or perhaps gets you punched in the face? All mounting...

    Was: $39.99
    Now: $25.99
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  • SALE
    Custom Harley Timing Cover, Twin Cam, Laser Engraving Throttle Addiction Custom Harley Points Cover, Twin Cam, Laser Engraved Throttle Addiction

    Harley Points Cover - Slammin' Gears Chuggin' Beers - Black

    Custom laser engraved "Slammin Gears Chuggin Beers" Harley points cover!  People are going to want to eyeball your ride anyway, why not have a message or logo that either starts a friendly conversation or perhaps gets you punched in the face? All...

    Was: $39.99
    Now: $25.99
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  • 14" Tall Vintage Style Ape Hanger Handlebars - Throttle Addiction 14" Tall Vintage Style Ape Hanger Handlebars - Throttle Addiction

    Throttle Addiction - 14" Vintage Ape Hangers - Chrome

    Sometimes old is better and the vintage apes follow that creed.  Unlike more modern styled ape hangers, these have a narrow clamping area and spread out wider towards the gripping area giving the uprights a nice stylish angle.  They're...

    $109.99
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    Vintage Simple Black 1" Throttle Assembly Motorcycle Harley Vintage Simple Black 1" Throttle Assembly Motorcycle Harley

    Vintage Style Throttle Assembly - Black - Double Cable

    Our beautifully refined, stripped down motorcycle throttle assembly is a simple, clean and cost effective option for your 1” handlebars. Die cast aluminum with satin black finish.     Dual cable Fits 1" handlebars

    Was: $34.99
    Now: $19.99
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  • Harley Dyna Mid Controls 1991 - 2017 Harley Dyna Mid Controls 1991 - 2017

    Dyna Mid Controls Kit - 1991 - 2017

    Stock style mid control kit fits Harley Davidson Dyna FXD from 1991-2017.  Mid foot controls put the rider in a more controlling position over the motorcycle. Forward controls can leave you feeling like you’re in a recliner, switching to this...

    $239.99
    Out of Stock
  • SALE
    7mm Braided Cloth Motorcycle Spark Plug Wire Kit Finned Boots - Gold / Black Throttle Addiction 7mm Braided Cloth Motorcycle Spark Plug Wire Kit - Gold / Black  Throttle Addiction

    7mm Braided Cloth Spark Plug Wire Kit - Gold / Black

    These vintage style cloth wrapped spark plug wires will add a nice accent to your vintage motorcycle.  They feature 7mm solid core copper conductor, PVC wrapped and then covered in cotton wrap for that old school look.  The kit includes clips...

    Was: $29.99
    Now: $19.99
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  • Vintage Chrome Inline Big Twin Springer Front End Vintage Chrome Inline Big Twin Springer Front End

    Vintage Harley Big Twin Style Springer Front End - Chrome

    Vintage style springer front end, replicated after the Harley Davidson Big Twin springer yet incorporates modern upgrades.  Includes chrome top clamp and 3/4" axle kit. Fully assembled with in-line top clamp – 0 degree rake 1” O.D...

    $799.99 - $849.99
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  • 11" T-Bars Black Club Style Throttle Addiction 11" T-Bars Black Club Style Throttle Addiction

    Throttle Addiction - 11" T-Bars - Black

    Throttle Addiction 11" T-bars will leave you with a tight aggressive riding stance.  A slight 2” pullback slightly relaxes the wrists for a more comfortable grip.  At 26” wide, you'll have ample control without the "I'm about to hug...

    $99.99
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  • Pangea Speed Ronald Grips - Throttle Addiction Pangea Speed Ronald Grips - Throttle Addiction

    Pangea Speed - Ronald Grips 1" - Black

    The Ronald grips were designed by the man Andy Carter of Pangea Speed to be clean and simple.  The 1" grips fit standard Harley throttle tubes which means one grip is 1" and the other is 1.125" to fit over the throttle sleeve.  They are...

    $24.99
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  • 5" Rolled Edge Ribbed Motorcycle Fender Throttle Addiction 5" Rolled Edge Ribbed Motorcycle Fender Throttle Addiction

    5" Rolled Edge Ribbed Motorcycle Fender

    This 5” steel fender is a close reproduction to the original Wassell ribbed fenders of years past.  It features two fully finished ends, so you could get two fenders out of one.  The sides are 100% edge rolled so the entire fender has a...

    $94.99
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  • Throttle Addiction Solid Mount Adapter Kit XL Sportster FX Solid Mount Adapter Kit XL Sportster FX

    Solid Mount Handlebar Bushings - FX and Sportster

    These zinc-plated handlebar bushings replace the rubber bushings and cap washers in Harley triple trees.  If you’re running taller bars or risers replacing the rubber bushing with solid mounts will remove slop and play in the bars.  These...

    $19.99
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  • Flanders Style Motorcycle - 1" Risers - Short - Throttle Addiction Flanders Style Motorcycle - 1" Risers - Short - Throttle Addiction

    Flanders Style Motorcycle Risers - Short

    Throttle Addiction Flanders style risers are constructed from cast stainless steel and polished to a mirror shine.  These require ½” x 20 TPI mounting bolts and work with 1" handlebars. Specs: 1" rise to bottom of the handlebar...

    $109.99
    Add to Cart
  • Dual Headlight mounting bracket for motorcycle - Throttle Addiction Dual Headlight mounting bracket for motorcycle - Throttle Addiction

    Dual Headlight Mounting Bracket- Paughco

    This is the bracket if you're looking to run dual headlights on your chopper.  Will require drilling hole in your bottom triple tree, otherwise it will mount up to most springer front ends.   Steel construction Chrome-plated 3/8" holes 7" long...

    $65.99
    Out of Stock
  • SALE
    8" Black Harley T Bars Handlebars dyna Sportster Throttle Addiction 8" Black Harley T Bars Handlebars dyna Sportster Throttle Addiction

    Throttle Addiction - 8" T-Bars - Black

    The Tee handlebars put you in a tight, aggressive riding position.  A slight 2” pullback slightly relaxes the wrists for a more comfortable grip.  They come 30” wide, but quick use of a hacksaw can narrow them up to approximately...

    Was: $99.99
    Now: $49.99
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  • SALE
    Throttle Addiction 1958-1964 big twin horseshoe oil tank Throttle Addiction 1958-1964 big twin horseshoe oil tank

    Harley Panhead Horseshoe Oil Tank - 1958-1964 - Chrome

    This chrome wrap around oil tank is a direct replacement for Harley Davidson Big Twin Panhead motorcycles from 1958-1964.  It also makes a great option for your custom chopper build.  The edges are seam welded just as the originals were and the...

    Was: $159.99
    Now: $129.99
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  • SALE
    Throttle Addiction Hell Diver Handlebars Throttle Addiction Hell Diver Handlebars

    Throttle Addiction - Hell Diver Bars - 1"

    Throttle Addition Hell Diver bars kick forward and slightly up. These bars feature integrated risers spaced 3.5” apart for standard Harley Davidson triple trees.  They look best on bikes with stock rake angles, but are especially sweet on...

    Was: $99.99
    Now: $49.99
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  • Harley Davidson Motorcycle Custom Derby Laser Engraved Etched Cover  "131"  Screamin Eagle Throttle Addiction - Touring M8 FLT Harley Davidson Motorcycle Custom Derby Laser Engraved Etched Cover  "131"  Screamin Eagle Throttle Addiction - Touring M8 FLT

    Custom Harley Derby Cover "131"

    We can't resist lasering stuff onto blank canvases, like a derby cover such as this. Hell, you have to have a derby cover, why not make it do some of your talkin' while folks are gawkin'.  These covers are made with die-cast construction with a...

    $135.99
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  • motorcycle Solo Seat Hinge Black Throttle Addiction motorcycle Solo Seat Hinge Black Throttle Addiction

    Black Motorcycle Solo Seat Hinge

    This seat bracket will fit most solo seats. It features two long slots for adjustability. The pivot bracket is unfinished so it can be welded to the backbone of your frame. The hinge bung mates seamlessly to 1.5" tubing. Includes Allen head pivot...

    $39.95
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  • 4" tall chopper dog bone risers - Throttle Addiction 4" tall chopper dog bone risers - Throttle Addiction

    Offset Dog Bone Risers - 4" Tall

    These offset dog bone risers are the perfect choice for your classically styled chopper.  The rubber mounts offer a little extra vibration reduction and comfort.  The machined uprights are a sturdy 1” diameter and the whole set is covered...

    $139.99
    Out of Stock
  • Early Harley Springer fork headlight mount - Throttle Addiction Early Harley Springer fork headlight mount - Throttle Addiction

    Springer Fork Headlight Mount

    Springer fork headlight mount is zinc-plated and constructed of investment cast steel with fine threads.  Mounts on shock tabs with two hex cap screws. For use with custom head lamp and bottom mount lamp only. Threads measure 5/16 x 24 and 1" deep...

    $49.99
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  • SALE
    Nationbuilt Nationbilt grips tan - throttle addiction Nationbuilt Nationbilt grips tan - throttle addiction

    Throttle Addiction - Nationbilt Grips - Ivory

    Throttle Addition offers the Nationbilt grips to give your modern ride a bit of nostalgia.  They are injection molded from soft durable rubber and available in black and ivory.  It is recommended to install these grips with compressed air or a...

    MSRP: $17.99
    Was: $17.99
    Now: $5.99
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  • 14" Vintage Ape Hanger Handlebars Chrome Chopper Bars Throttle Addiction 14" Vintage Ape Hanger Handlebars Chrome Chopper Bars Throttle Addiction

    Throttle Addiction - 16" Vintage Ape Hangers - Chrome

    Sometimes, old is better and the vintage apes follow that creed.  Unlike more modern styled ape hangers, these have a narrow clamping area and spread out wider towards the gripping area giving the uprights a nice stylish angle.  They're...

    $119.99
    Choose Options
  • 1" Chrome Dual Cable Motorcycle Throttle Assembly Throttle Addiction 1" Chrome Dual Cable Motorcycle Throttle Assembly Throttle Addiction

    1" Chrome Dual Cable Motorcycle Throttle Assembly

    1” dual cable throttle assembly for use on custom Harleys that want a clean handlebar set up.  Clamp assembly is die cast chrome-plated aluminum and throttle tube is plastic.  Dual Allen heads clamp it into place.  For 1”...

    $24.99
    Add to Cart
  • T-Sport Motorcycle Fairing - Gloss Black - Throttle Addiction T-Sport Motorcycle Fairing - Gloss Black - Throttle Addiction

    T-Sport Fairing - Gloss Black

    This T-Sport fairing is the perfect solution to style AND wind protection, cutting down on bug snacks and allowing you to ride comfortably. It's designed for direct fitment on 2006+ Dyna using the riser bolts and the bottom triple tree mounted headlight,...

    $84.99
    Out of Stock
  • 3" Post Chopper Riser Throttle Addiction 3" Post Chopper Riser Throttle Addiction

    Chrome Post Risers - 3"

    These classic motorcycle style risers are die cast steel and chrome-plated.   Designed to work with 1" handlebars. 3" rise  1/2" x 20 TPI threaded

    $59.99
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  • Knucklehead / Panhead / Shovelhead Fat Bob Tanks 3.5 Gal Knucklehead / Panhead / Shovelhead Fat Bob Tanks 3.5 Gal

    Knucklehead / Panhead / Shovelhead Fat Bob Tanks 3.5 Gal

    These 3.5 gal Fat Bob gas tanks are a direct replacement for Harley Davidson part # 61219-83 and 61425-83.  They will fit Big Twin Harley frames from 1936 to 1984 (except Softail models).  The tanks use a bayonet style gas caps, one left side...

    $149.99
    Out of Stock
  • Vintage cloth covered wire, red

    12 AWG Vintage Cloth Covered Wire - Red - 10 FT

    Using this vintage style cotton braided wire will help finish off your motorcycle project with a touch of class.  If you have to see the wires, use something that looks nice!  This 12 AWG wire is insulated with modern PVC coating before being...

    $8.99
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  • SALE
    Black Nationbilt Nationbuilt Grips - Throttle Addiction Black Nationbilt Nationbuilt Grips - Throttle Addiction

    Throttle Addiction - Nationbilt Grips - Black

    Throttle Addition offers the Nationbilt grips to give your modern ride a bit of nostalgia.  They are injection molded from soft durable rubber and available in black and ivory.  It is recommended to install these grips with compressed air or a...

    MSRP: $17.99
    Was: $17.99
    Now: $5.99
    Choose Options