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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Cannonball Lion Battery Box for Li-Ion Batteries 1936-1964 Harley-Davidson OHV Big Twin 1937-1948 SV Big Twin
$463.52

Performance Machine 1 inch Contour Billet Brake Master Cylinder 11/16" Bore - Chrome
$461.95

Marion Metalworks Universal Headlight Mounting Bracket/Eyebrow Delete
18 reviews $60.00

Cycle Standard Front Brake Master Cylinder Assembly - Black - Single Disc 1996-2017 Models (EXCEPT 15-17 Softail, 08-17 Dressers, Trike, 04-17 XL)
$194.71

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

Lowbrow Customs 39mm Narrow Triple Trees Kit
3 reviews $449.99

Gasbox Upswept Shotgun Exhaust Pipe Set for 1970-1984 Harley-Davidson Shovelhead Rigid Applications
1 review $349.95

American Prime Mfg. Comp Master Ignition Advance Unit - 1970-Up Harley-Davidson Replaces OEM #3251770T
6 reviews $88.21

Cycle Standard Drilled Stainless Steel Brake Rotor - 10 inches - Replaces Harley-Davidson OEM #44137-77A
2 reviews $100.89

Cycle Electric LeBeef Generator DGV-5000-LH-CP 12 Volt Low Voltage - 1936-1964 Harley-Davidsons w/Heli Coils
2 reviews $652.30 $698.26

Mid-USA 6 Speed Transmission - Black Finish - 1990-1999 Harley-Davidson Softail
$1,289.00 $1,443.75

Cycle Electric LeBeef Generator DGV-5000-L-CP 12 Volt - Low Voltage - 1965-1984 Harley-Davidson
$638.37 $683.35

S&S Cycle Quickee Adjustable Pushrod Set - 1984-1999 Harley-Davidson Big Twin
2 reviews $224.95

Prism Supply Co. Sling Shot Hydraulic Brake Pedal Kit - Harley-Davidson Cone Engine - Stainless Steel
$249.99

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

Lowbrow Customs Pursuit Foot Peg Set - Brass
38 reviews $175.72

Cycle Standard Nose Cone Cam Gear Cover - Chrome - 1993-99 Harley-Davidson Big Twin
3 reviews $153.10

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

Mid-USA 16 x 3.00 Black Complete Rear Wheel fits all Harley-Davidson 1979-1999
11 reviews $203.25

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

Old-Stf Cycle Shovelhead Rocker Box Split Oil Lines - Stainless & Black
$99.95

Cycle Standard 8-1/2 inch Pullback Handlebar Riser Set - Chrome
1 review $131.53

Cannonball Oil Pump 1936-52 Harley-Davidson Knucklehead Panhead - Replaces OEM #26201-41 26201-48
1 review $1,176.02

Cycle Standard 3 Stud Clutch Hub Assembly - Harley-Davidson Big Twins 1941-1984 - OEM #37550-41B
15 reviews $117.39

Prism Supply Co. Harley Jockey Shifter Kit - 5 & 6 Speed Big Twin - Stainless Steel
14 reviews $89.99

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

Til Death Cycles 39mm Extended Damper Tube Kit- Harley-Davidson Front End
29 reviews $104.95

Cycle Standard Polished Clutch Lever Assembly - 1968-1971 FL/FX 1971-1972 XL - OEM #38608-68
6 reviews $29.66

Cannonball Extended Clutch Release Lever for Stealthstarter Electric Starter 1936-1964 4 Speed Harley-Davidson Big Twins
1 review $101.88

Cycle Standard Bobbed Rear Fender Without Light Mount for 1984-1999 Harley-Davidson Softail
6 reviews $185.88

S&S Cycle High Performance Hydraulic Tappet Set - 1984-99 Harley-Davidson Big Twin 1986-90 XL
1 review $381.95

Cycle Electric Generator DGV-5006 6 Volt for 1936-1964 Harley-Davidsons with 5/16-24 mounting bolts
$555.08 $594.19

Lowbrow Customs Premium Stainless Steel Intake Clamp & Seal Kit 1955-1977 Harley-Davidson FL/FX/XL
16 reviews $33.63

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 32 amp CE-32AL - 1988-1999 Harley-Davidson Softail
$367.45 $393.34

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

Gasbox Exhaust Pipe Set 1966-1969 Harley-Davidson Generator Shovelhead FL FLH 74 ci - Bare Steel
2 reviews $275.00

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 30-1/4 inch - 6 Over
$214.38

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

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

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

Lowbrow Customs 39mm Tapered Fork Lowers - Aluminum
2 reviews $344.06

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

Lowbrow Customs T-Bars Handlebars - 12 Inch Rise - 1 inch Diameter - Black
2 reviews $144.14

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

Cannonball Extended Throwout Bearing for Stealthstarter Electric Starter 1936-1975 4 Speed Harley-Davidson Big Twins
1 review $90.54

Cycle Standard Bobbed Rear Fender With 1973-Up Light Mount for 1984-1999 Harley-Davidson Softail
4 reviews $191.90

Cycle Electric Alternator Kit CE-60AR for 1970-1984 Harley-Davidson 4 Speed Solid Mount Motors
$470.33 $503.46

Mooneyes 60 psi Oil Pressure Gauge
36 reviews $49.00

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

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

Cycle Standard Drilled Stainless Steel Brake Rotor - 11.5 inches - Replaces Harley-Davidson OEM #41797-00
1 review $101.89

Cycle Electric Alternator Kit CE-62AR for 1991-1998 Harley-Davidson Dyna 1984-1999 Softail Models
$457.86 $490.13

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

Cycle Standard Drilled Stainless Steel Brake Rotor - 10 inches - Replaces Harley-Davidson OEM #41807-73, 41813-79
2 reviews $100.89

Motone Screw-In Billet Gas Cap for 1996 & later Harley-Davidson - Vented - Satin Brass
1 review $82.47 $102.22

Prism Supply Co. 4 inch Mid-Pegs - Harley-Davidson Cone Shovelhead and Evo Big Twins - Open Primary
2 reviews $98.99

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

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

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

Cycle Standard 39MM Chrome Fork Tubes - 25 inch - Stock Length
7 reviews $219.72

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

Airspeed Cycles Wide Bottom Springer Ape Hanger Handlebars - 11 inch Rise - 1 inch - Stainless Steel
2 reviews $175.00

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

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

Lowbrow Customs T-Bars Handlebars - 10 inch Rise - 1 inch Diameter - Black
25 reviews From $142.92

Lowbrow Customs Throttle Housing 1996 & up Harley Push-In Dual Cable - Black - 1 inch
18 reviews $105.15

Lowbrow Customs Throttle Housing 1996 & up Harley Push-In Dual Cable - Aluminum - 1 inch
9 reviews $93.46

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

Gasbox Evo Sportster CV Carburetor Support Bracket - 1991-2006 Harley-Davidson Sportsters - Tumbled Aluminum
26 reviews $34.95

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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