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

Lowbrow Customs Domed Steel Motorcycle Oil Tank for H-D Sportster Big Twin and Universal Choppers
23 reviews $224.94

Cycle Standard 39mm Fork Leg Assembly Rebuild Kit 1988-2022 Harley-Davidson XL 1991-1998 FXD 1987-2000 FXR
1 review $84.74

Prism Supply Co. Sling Shot Clutch Control - Harley-Davidson 5 & 6 Speed - Stainless Steel
4 reviews $324.99

Lowbrow Customs Deluxe Choke Knob Enricher for Harley-Davidson S&S Super E and G Carburetors - Chrome
45 reviews $48.61

Drag Specialties Steel Clutch Plate Kit - 1968 - 1984 Shovelhead
12 reviews $40.23

Old-Stf Cycle Shovelhead Rocker Box Split Oil Lines - Brass
30 reviews $91.43

Lowbrow Customs Belt To Chain Conversion Kit 1995-1999 Harley-Davidson Softail - Black Sprocket
$159.99

Cycle Standard 3 position Ignition Key Switch Replaces Harley-Davidson OEM #71425-77 - Black Body / Black Bezel
16 reviews $41.49

Lowbrow Customs Belt to Chain Conversion Kit 2000-2005 Harley-Davidson Dyna Spoked Wheels - Chrome Sprocket
1 review $212.43

LePera Bare Bones Solo Seat - Smooth - fits 1984-1999 Harley-Davidson Softail
1 review $318.00

LCFabrications Clutch Switch Pod Delete - Black - for H-D
28 reviews $35.00

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 28-1/4 inch - 4 Over
$213.18

V-Twin Manufacturing Mid Brake Control Kit 1979-1982 Harley-Davidson FX/FXE
$208.49

Hawg Supply Bolt-On Mid Peg Mounts 1970-1999 Harley-Davidson Big Twins
$124.99

Lowbrow Customs Belt to Chain Conversion Kit Harley-Davidson Dyna 2000-05 Mag Wheels - Chrome Sprocket
$207.99

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

Cycle Standard Ignition Advance Unit WIth Bolt 1970-Up Harley-Davidson OEM# 3251770T
4 reviews $39.42

Colony #2322-11 Rocker Arm Cover Stud Kit 1966-1984 Harley-Davidson Shovelhead
4 reviews $47.38

Cycle Standard Chrome Mesh CV Carb Air Cleaner - Sportster & Big Twin Harley
41 reviews $105.05

Bates S&S Super E/G Carburetor Adapter for Bendix Style Oval Harley Air Cleaners
11 reviews $154.37

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

Belt Drives LTD. 11mm/1.5 inch Primary Belt Drive - Kick Start - Spline Shaft - 1965-E1984 Harley-Davidson Big Twin
$784.84 $826.15

Biltwell Thunder Risers - Polished Stainless
7 reviews $199.95

Lowbrow Customs Rogue Rear Fender Strut Set 1958 - 1984 Harley-Davidson Panhead Shovelhead
17 reviews $101.87

Belt Drives LTD. 8mm/1.5 inch Primary Belt Drive - Kick Start - 1936-1954 Harley-Davidson Big Twins
$726.39 $764.62

Lowbrow Customs Bolt On 3/4 inch Ignition Key Switch Bracket for Harley-Davidson Four Speed Transmissions - Tumbled Stainless
13 reviews $26.37

Cycle Standard 39mm Fork Boot Gaiter Set for Harley Sportster's Front Forks
32 reviews $48.08

Cycle Standard Clutch Hub Bearing Kit - 1941-84 Harley-Davidson Big Twins
4 reviews $48.40

Cycle Standard 10-stud Clutch Hub Puller
23 reviews $52.43

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

American Prime Mfg. Complete Comp Master Clutch fits 1990-1997 Harley-Davidson Big Twin
$622.33

Cycle Standard Tail Light Assembly for 1973-1999 Harley-Davidsons - Replaces OEM #68008-73A
13 reviews $65.15

Motone Screw-In Billet Gas Cap for 1996 & later Harley-Davidson - Vented - Black
$82.47 $102.31

American Prime Mfg. Cast Alternator Shroud Cover for Open Belt Drives fits 1970-2006 Harley-Davidson Big Twins - Polished
$72.09

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

Lowbrow Customs 60 PSI Harley Oil Pressure Gauge - Black Face
39 reviews $46.85

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

PanheadEric Precision Stainless Steel Rear Chain Adjuster Screws 1936-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead
$40.00

Lowbrow Customs PVC Spacer Kit For Extended 39mm Fork Tubes
1 review $14.26

Progressive Suspension Heavy-Duty Fork Springs 1999-2005 Harley-Davidson FXD FXDC FXDL 2004-15 XL Models
3 reviews $139.95

Cycle Electric CE-546 Replacement Regulator for Harley-Davidson Model 61 6 Volt Generators
$186.19 $199.31

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

Belt Drives LTD. 11mm/1.5 inch Primary Belt Drive - Kick Start - Tapered Shaft - 1936-1954 Harley-Davidson Big Twin
1 review $726.39 $764.62

Cycle Standard Mesh Air Cleaner - Black - Harley-Davidson CV Carb Sportster and Big Twin
29 reviews $98.65

Cycle Standard Fat Bob Style Gas Tanks - 1948-1984 Harley-Davidson FX/FL - 3.5 Gallon
4 reviews $284.75

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

Colony #2012-8 Head Bolt Set 12 Point 1992-Up Harley-Davidson Big Twin 1993-Up XL - Chrome Plated
5 reviews $109.99

Prism Supply Co. 10 Degree Kickstand Adjustment Plate for Harley-Davidson Jiffy Stands
$49.99

Fast Eddy Co. No. 30 Wheel Bearing Race Remover / Installer
7 reviews $54.95

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

Cycle Standard 35MM Chrome Fork Tubes - 25-1/4 inch - 2 Over
3 reviews $187.44

Cycle Electric Alternator Kit CE-81A-97R 1997-1998 Harley-Davidson FLH/FLT/FXR
$543.97 $582.29

Cannonball Extended Crossover Shaft For Use With Stealthstarter Electric Starter Kit Rigid Frame 4 Speed Harley-Davidson Big Twins
$90.61

Hawg Supply Quick-Pull Clutch Cable Bracket V2.0 For Harley-Davidson Ratchet Top 4 Speed Transmissions
1 review $89.99

Gasbox Tall Chopper Bolt On Sissy Bar - 2006-2017 Dyna
21 reviews $134.95

Fast Eddy Co. No. 21 Wrist Pin Bushing Installer / Remover
15 reviews $89.95

Cannonball Intake Manifold for Bendix/Keihin Butterfly Carburetors 1940-54 Harley-Davidson OHV Models
$268.35

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

Timken Harley Timken Wheel Bearings - OEM #9033 & 9052 Replacement
14 reviews $22.25

Fast Eddy Co. No. 2 Pinion Nut Socket 1954-1992 Harley Big Twins
18 reviews $37.95

Cycle Standard Heavy Duty Chrome Kicker Lever 1936-1977 Harley-Davidson Big Twin 1957-1976 XL
8 reviews $69.49

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

Cannonball Transmission Base Plate 1936-1985 4 Speed Harley-Davidson Big Twins
$132.13

Cycle Standard 41MM Chrome Fork Tubes 1949-1976 Harley-Davidson FL - 20 inch - Stock Length
$178.40

LCFabrications Brake Switch Pod Delete - Black - for H-D
28 reviews $35.00

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

James Gaskets Exhaust Port Gasket Kit - Thick Graphite Wire Gaskets & Hex Nuts - 1984-Up Harley-Davidson Evo/Twin Cam 1986-2022 XL
$24.95

Lowbrow Customs Radius Breather Bolts for Harley-Davidson Evo - Brass
35 reviews $49.49

Cycle Standard Replacement Dished Sprocket - Chrome - 48 Tooth - 1973-1985 Harley-Davidson Big Twin 1979-81 XL OEM #41470-73
2 reviews $75.02

Airspeed Cycles High Rise Riserless Tracker Handlebars - 1 inch - Stainless Steel
1 review $255.00

Cycle Standard Clutch Plate Kit 1968-1984 Harley-Davidson Big Twins
$85.71

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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