Which models are considered Big Twins?

Big Twins refer to larger displacement Harley-Davidsons, including Flathead, Knucklehead, Panhead, Shovelhead, Evo, and Twin Cam.

Do I need any special tools for installing custom Big Twin parts?

Basic hand tools usually suffice, but some installations (like welding) may require specialized equipment or professional assistance.

Can I return items if they don’t fit my Big Twin?

Absolutely. As long as the part is in original, unused condition, you can return it according to our standard return policy.

Harley-Davidson Big Twin Parts

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LePera Bare Bones Solo Seat - Diamond - fits 1984-1999 Harley-Davidson Softail
1 review $387.00

Cycle Standard Bayonet / Cam Harley Style Vented 2" Gas Cap - Chrome
54 reviews $22.46

Mullins Chain Drive 39mm Super Narrow Triple Trees Set
19 reviews $500.00

Fast Eddy Co. No. 20 Pinion Gear Locking Tool 1954-1999 Harley Big Twins
8 reviews $99.95

Old-Stf Cycle Centerline Adjustable Aluminum Transmission Plate - Harley-Davidson Big Twin 4 Speeds
5 reviews $249.00

Lowbrow Customs Big Twin Harley-Davidson Engine Stand (1936-1999) - Fits Knucklehead, Panhead, Shovelhead, Evo Motors
54 reviews $70.10

Cycle Standard 35MM Chrome Fork Tubes - 29-1/4 inch - 6 Over
3 reviews $206.07

V-Factor Motorcycle Parts MCM Slash Cut Drag Pipes 1986-2006 Harley-Davidson Softail - Chrome
4 reviews $129.99

Cycle Standard 11" Chrome Shocks With Chrome Spring - 1 inch Under - 1973-1984 Harley-Davidson FX/FXE 1972-1984 FL
$233.91

Gremlin Wiring Gremlin Wiring Harness Kit for 1949-1999 Kick-Only Shovelhead & Big Twin Models
1 review $199.99

Lowbrow Customs Motorcycle Neck Cup & Bearing Race Installer Tool
6 reviews $51.65

Cycle Standard 35MM Chrome Fork Tubes - 31-1/4 inch - 8 Over
1 review $199.10

Lowbrow Customs Louvered Air Cleaner for Harley CV / EFI 1991-2020 - Chrome
82 reviews $81.78

Cycle Standard 3 position Ignition Key Switch Replaces Harley-Davidson OEM #71425-77 - Chrome Bezel
86 reviews $34.64

Morris Magneto MM2 Magneto for 1971-1980 Harley-Davidson XL - Brushed Finish
$1,295.00

Cycle Electric Stator CE-3845-02 for 2002 - 2005 Harley-Davidson FLH and FLT Models
11 reviews $143.49 $153.60

Gasbox Shovelhead Exhaust Pipe Set 2-into-1 for 1970-84 Harley Cone - Bare Steel OEM #65435-70
29 reviews $214.99

Fast Eddy Co. No. 29 Driver Handle with Wedge Spacer
8 reviews $79.95

Drag Specialties Friction Clutch Plate Kit (5-Pack) for 1968-1984 Harley Shovelhead
14 reviews $84.75

Cycle Standard 8 inch Forged Aluminum Handlebar Risers - Chrome
1 review $125.69

Bar-None Moto BNM Two-Up Bolt On Sissy Bar For Rogue Fender - 1958-1984 Harley-Davidson Panhead/Shovelhead
$307.02

Cycle Standard 1936-1986 Harley-Davidson Big Twin 4 Speed Complete Kickstarter Rebuild Kit
$305.68

Mid-USA 19 x 2.5 Chrome Complete Front Wheel Fits Harley-Davidson Sportster XL & FX 1984-1999
2 reviews $305.05

FNA Custom Cycle Twisty Transmission Plate - Harley-Davidson Big Twin 4 Speeds
3 reviews $240.00

Mooneyes MC Motorcycle Chopper Oil Tank for Harley-Davidson Choppers
10 reviews $395.00

Mooneyes MOON Spun Aluminum Air Cleaner for CV or S&S Super E/G Carburetors
13 reviews $98.00

Cycle Standard 35MM Chrome Fork Tubes - 27-1/4 inch - 4 Over
5 reviews $194.89

Lowbrow Customs Rear Suspension Delete Kit 1984-1999 Harley-Davidson Softails
$194.66

Cycle Standard Chrome Fork Neck Cup Kit with Fork Stops for 1949-1987 Harley-Davidson Big Twins
1 review $52.59

Cycle Electric Alternator Kit CE-81AR 1989-1996 Harley-Davidson FLH/FLT/FXR
$575.74 $616.31

Cycle Electric CE-8010-08 Stator Replacement for 2008-2017 Harley Dyna & Softail OEM #30017-08
22 reviews $163.88 $175.43

Cycle Electric Alternator Kit CE-71AR 1980-1988 Harley-Davidson FLH/FLT/FXR With 5 Speed Rubber Mount Motors
$571.48 $611.75

Cycle Electric Rectifying Regulator CE-320 - 1989-1996 Harley-Davidson FL 1989-1998 FXD FXR
23 reviews $162.71 $174.17

Cycle Electric Rectifying Regulator CE-203 - 1976-1980 Harley-Davidson Big Twins
12 reviews $162.21 $173.64

Cycle Standard 1936-1986 Harley-Davidson Big Twin 4 Speed Kickstarter Rebuild Kit
2 reviews $124.69

Gasbox Exhaust Pipe Set 2-into-1 1970-84 Harley Cone Shovelhead - Chrome OEM #65435-70
15 reviews $279.99

Cycle Electric LeBeef CE-540L-CP Replacement Regulator for use on 12v Harley-Davidson Generators
$275.99 $295.43

Fast Eddy Co. No. 3 Pinion Gear Puller for all 1999 & earlier Harley-Davidson
14 reviews $109.95

Dynatek Performance Electronics 3 Ohm Dual Output HD - For Use With Dyna Electronic Ignitions
3 reviews $144.43

Cycle Electric Stator CE-8999 for 1989-1999 Harley-Davidson Evo Big Twins with 32 amp Alternator
27 reviews $109.29 $116.99

Gremlin Wiring Gremlin Wiring Harness Kit for 1989-1999 Harley-Davidson Softail Models
$359.95

Cycle Electric Alternator Kit CE-74TR 1999-2003 Harley-Davidson Dyna Models
$537.91 $575.81

Gasbox Upswept Exhaust Pipe Set 1948-1957 Harley-Davidson Rigid Panhead - Chrome
5 reviews $214.95

Cycle Electric Generator DGV-5000-BLK 12 Volt - 1965-1984 Harley-Davidson - Blacked Out
2 reviews $535.58 $573.32

Lowbrow Customs Domed Screw-In Gas Cap for Harley-Davidson 1996 & later - Brass
23 reviews $89.06

Drag Specialties Complete Advance Unit Assembly 1970-1999 Harley Davidson Big Twin 1971-2003 XL Points Ignition (Except Single Fire Ignition)
6 reviews $44.45

Cycle Craft Carburetor Rebuild Kit 1988-2006 Harley-Davidson CV Carbs
12 reviews $25.70

Airspeed Cycles Narrow Bottom Ape Hanger Handlebars - 11 inch Rise - 1 inch - Stainless Steel
$175.00

Hugh's Handbuilt HHB Harley Davidson Sprocket Lock System - Black Anodized
1 review $69.89

Cycle Standard Chrome Kickstand Kit - Stock Length - 1966-1986 Harley-Davidson FL FX
15 reviews $116.39

Lowbrow Customs Belt to Chain Conversion Kit Harley-Davidson Dyna 1994-99 - Chrome Sprocket
2 reviews $207.99

Fast Eddy Co. No. 12 Float Bowl Drain Valve for S&S Super E / G / B Carburetors
32 reviews $44.95

Lowbrow Customs 39mm Tapered Fork Lowers - Black
$344.06

Cycle Standard 5 Stud Clutch Hub Assembly - Harley-Davidson Big Twins 1941-1984 OEM #37550-41B
6 reviews $114.25

Cycle Standard Screw-In Harley Stock Style Vented Gas Cap - 1996 & up - Chrome
38 reviews $29.28

Cycle Standard Drilled Stainless Steel Brake Rotor - 11.5 inches - Replaces Harley-Davidson OEM #44156-00
4 reviews $101.89

Mooneyes Finned Points Cover for Harley-Davidson Big Twins
37 reviews $67.67

Lowbrow Customs Springer Top Clamp for Standard 3.5" Handlebar Risers
3 reviews $202.45

PanAm Oils Inc. Oil/Ignition Shut-Off Valve Pre-2000 Harley-Davidson
1 review $249.49

Mid-USA 16" x 3.00" Black Wheel for 1973-1984 Harley Big Twin - Front or Rear - Dual Flange
5 reviews $247.55

Gasbox Upswept Shotgun Exhaust Pipe Set for 1970-1984 Harley-Davidson Shovelhead Rigid Applications
1 review $329.95

Lowbrow Customs Rigid Shock Struts for Harley-Davidson Motorcycles
13 reviews $140.58

Mooneyes 60 psi Oil Pressure Gauge
36 reviews $49.00

Fast Eddy Co. No. 6 Transmission Socket 1-7/8" for 1936-2005 Harley Big Twins
17 reviews $139.95

Lowbrow Customs Premium 39mm Chrome Fork Seal Covers - Chrome - Harley-Davidson OEM #46002-87
3 reviews $42.45

Drag Specialties Hydraulic Brake Light Switch 1984-99 Harley-Davidson FLST/FX/FXST/FXR 79-85 XL 91-98 Dyna 71-84 FX 80-98 FLT 82-83 FXR
9 reviews $21.35

Lowbrow Customs Speedometer Gauge Riser Mount for 1 inch T-Bar Handlebars - Polished
20 reviews $105.93

Cycle Standard Nose Cone Cam Gear Cover - Chrome - 1973-92 Harley-Davidson Big Twin
2 reviews $189.33

Lowbrow Customs 39mm Narrow Glide Fork Brace - Standard Width
3 reviews $157.46

Cycle Standard Exhaust Flange Kit H-D 1984-13 Big Twins and 1986-13 XL OEM #65328-83 65325-83
18 reviews $36.26

Performance Machine 1 inch Contour Billet Brake Master Cylinder 9/16" Bore - Chrome
$461.95

Harley-Davidson Big Twin motorcycles are legendary for their raw power, distinctive style, and unmatched capacity for customization. From the Flathead and Knucklehead to the Panhead, Shovelhead, Evo, and Twin Cam, each Big Twin engine carries its...

If you’re looking to transform your ride—enhancing speed, comfort, or that unmistakable retro look—explore our Harley-Davidson Big Twin Parts collection. We have everything you need to customize your bike, whether you’re focusing on performance upgrades or eye-catching aesthetics.

Why Upgrade a Harley-Davidson Big Twin?

Boundless Customization: Big Twins allow for radical transformations—from stripped-down bobbers to vintage choppers—letting you express your unique vision.
Enhanced Performance: Boost horsepower, torque, and responsiveness with high-quality ignition kits, carburetors, and more.
Personalized Aesthetics: Whether it’s a retro-inspired racer or a comfortable tourer, your bike can reflect your style and riding needs.

Why Buy Big Twin Motorcycle Parts at Lowbrow Customs?

We curate top brands and rigorously test products for durability, fitment, and performance before shipping them out.
Variety of Choices: We offer a carefully curated selection of motorcycle parts for a wide range of Big Twin engines—from the Flathead and Knucklehead to the Panhead, Shovelhead, Evo, and Twin Cam—so you can find the perfect fit for your ride.
Expert Guidance: Need advice on installing a gas tank or swapping out your ignition? Our dedicated staff is here to help—from how-to videos to step-by-step articles.
Passion for Custom Builds: We’re not just sellers—we’re fellow riders who believe in the art of motorcycle customization. Count on our expertise to bring your dream bike to life.
Wide Selection & Fast Shipping: Our warehouse in northeast Ohio is stocked daily, ensuring you get the parts you need quickly. Plus, enjoy free economy shipping on U.S. orders over $99 and flexible return policy within 90-day & no return fee.

Our Featured Big Twin Motorcycle Parts Products

Ignition Kits & Carburetors: Gain more power and better throttle response by upgrading your ignition and carb system. A refined setup can increase speed, torque, and overall rideability.
Custom Gas Tanks: Our Big Twin gas tanks are crafted from high-grade steel, pressure-tested to prevent leaks, and available in multiple shapes and capacities. Achieve the perfect balance between form and function.
Handlebars & Controls: From vintage ape hangers to sporty drag bars, our collection of handlebars offers different heights, widths, and designs. Complete the setup with controls like grips, mirrors, and brake/clutch assemblies for a cohesive look.
Retro Accessories: Elevate your Big Twin’s retro appeal with add-ons like vintage-inspired seats, windshield options, saddle bags, or even a top-mounted box for touring. Personalizing these details completes the old-school charm.

Ready to Customize Your Harley-Davidson Big Twin?

Explore our Harley-Davidson Big Twin Parts collection today and transform your ride into the perfect blend of power, comfort, and style. If you have questions, reach out to our expert support team or dive into our installation guides for pro tips. Let’s make your dream bike a reality—shop now and gear up for the open road.

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Harley-Davidson Big Twin Parts FAQ

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