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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Thrashin Supply Co. Militant Foot Pegs - Black
2 reviews $149.95

Gasbox Complete Hardware Kit for Gasbox Rigid Big Twin Frames with Frisco Tanks
$99.95

Gasbox Strong Arm Top Motor Mount With Crank Key Mount 1948-1984 Harley Big Twins
5 reviews $74.95

Gasbox 35mm Harley-Davidson Narrow Glide Headlight Mount - Tumbled Stainless
14 reviews $29.95

Lowbrow Customs Primary Drive Clutch Locking Tool for Harley-Davidson Big Twins 1940-84
23 reviews $38.14

Colony #2318-1 Sprocket Shaft Bearing Retainer Installation Tool 1955-1968 Harley-Davidson Big Twin
4 reviews $74.45

Colony #8312 CAD Complete Stock Hardware Kit - 1976-1978 Harley-Davidson Shovelhead - CAD Plated
1 review $295.38

Colony #8301 PARK Complete Stock Hardware Kit - 1940-1947 Harley-Davidson Knucklehead - Parkerized
1 review $295.30

Cycle Standard Handlebar Clamp - Smooth - Chrome
1 review $24.48

Lowbrow Customs Blade Levers - Black - 1996 - 2003 Harley Davidson Sportsters and 1996 - 2017 Dyna / Softail / Touring Models
57 reviews $45.51

Colony #2763-5 Intake Manifold Nipple Installation Tool 1940-1954 Harley-Davidson OHV 74's 1953-1956 K/KH - Parkerized
$97.90

Cycle Standard Master Cylinder Rebuild Kit Replaces Harley-Davidson OEM #42382-87A
3 reviews $61.65

Lowbrow Customs Rocker Box Oil Pressure Gauge Adapter Fitting - Chrome - 1971 - Up Harley-Davidson Shovelhead, 1971 - 1985 Sportster
9 reviews $30.51

Cycle Standard Kickstand Spring 1985-2006 Harley-Davidson Softail / 1991 & Up Touring / 1991 & Up Sportster Models - Black - OEM #50005-85A
44 reviews $9.09

Cycle Standard 22mm Petcock Round Body Solid Brass Harley-Davidson Style - Left Side Position
15 reviews $75.14

Gasbox Exhaust Squish Pipe 1936-1964 Harley-Davidson Big Twins
$72.50

James Gaskets Top End Gasket Kit 1966-1984 Harley-Davidson Shovelhead
$71.99

Colony #7516-4 Aluminum Pushrods for Hydraulic Lifters - 1966-1983 Harley-Davidson Shovelhead
5 reviews $71.50

Cycle Standard Rocker Box Covers - Chrome - 1948-65 Harley-Davidson Panhead
2 reviews $147.41

Unity Manufacturing Solid Pushrod Wrench Set
9 reviews $35.00

LCFabrications Clutch Switch Pod Delete - Polished - for H-D
8 reviews $35.00

Gasbox Strong Arm Top Motor Mount 1948-84 Harley Big Twins
7 reviews $69.95

Lowbrow Customs Radius Breather Bolts for Harley-Davidson Twin Cam - Chrome Plated
19 reviews $49.49

Cycle Standard 2 Position Ignition Key Switch Replaces Harley-Davidson OEM #71428-90A
21 reviews $42.02

Drag Specialties Neck Post Bearing & Race Set 1980-13 Harley-Davidson FLT/FLHT 99-13 FLTR/FLHR 60-86 FL/FX/FXWG 84-17 FXST/FLST 99-17 Dyna 82-21 XL
1 review $30.98

Cycle Standard Bayonet / Cam Harley Style Vented 2.5" Gas Cap - Chrome
13 reviews $37.35

Lowbrow Customs FiltroMax Belt Drive Mounting Bracket
11 reviews $26.15

Drag Specialties Rear Drive Belt - 130 Tooth - 1-1/2 inch Width - 1994-1999 Harley-Davidson Softail
$337.57

Cycle Standard 39mm Damper Tube Kit - 9.5" - 1994-1996 Harley-Davidson Sportster XL 1995-2017 FXD OEM# 45925-94
$69.00

Cycle Electric LeBeef CE-500L-CP Replacement Regulator for DGV-5000L Generator
3 reviews $274.66 $294.02

Cannonball Custom Transmission Adjuster Custom for Cannonball Transmission Base Plate 1936-1985 4 Speed Harley-Davidson Big Twins
$91.46

Cycle Standard Clutch Cable OEM #38606-87A 1987-1994 Harley-Davidson FXR +4 inch Extended
$71.98

Colony #8806-17 Motor Mounting Kit Upper & Lower 1970-1984 Harley-Davidson Big Twin - Chrome Plated
4 reviews $39.11

Drag Specialties High Performance Starter Solenoid 1965-1984 Harley-Davidson Big Twin 4 Speed 1967-1980 XL 1984-1988FXST/FLST 1985-1986 FXWG/FXSB
3 reviews $91.13

Drag Specialties Points & Condenser Kit 1948-1969 Harley-Davidson Big Twin 1957-1970 XL
$17.07

Lowbrow Customs Spare Parts Book for 1949-1957 Harley-Davidson Panhead
15 reviews $41.61

Cycle Standard Dragton II Air Cleaner - Chrome - Fits Bendix / Zenith, Keihin (except CV) Carbs
15 reviews $72.80

Colony #9424-8 Cylinder Base Stud Set 1985-1999 Harley-Davidson Big Twin Evo
$90.20

Cycle Standard Domed Slim Black Screw-In Harley Style Gas Cap 1996 & up
47 reviews $28.00

Standard Motorcycle Products Points & Condenser Kit 1970-E1978 Harley-Davidson Shovelhead (L1978-1984 Big Twin if converted to points) 1971-E1978 XL
$17.95

Cycle Standard Transmission Sprocket .5" Offset - 24 Tooth - 1991-2006 Harley-Davidson XL 1986-2006 Big Twin 5-Speed
$70.34

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Right Hand Outlet
13 reviews $26.73 $36.84

Cycle Standard Single Gauge Bracket - Chrome - 1995-2011 Harley-Davidson XL883 1995-2005 FXD Models
$88.99

Cycle Standard HD Factory Style Grips - Black 1 inch OEM #56206-81A
22 reviews $19.81

Lowbrow Customs Lowbrow Customs Spark Plug Wire Set 1982-1994 Harley FXR and Gasbox Ironhead & Big Twin Top Motor Mounts
$25.29

Old-Stf Cycle Old-STF Cycle Shovelhead Aluminum Carburetor Intake Support Bracket
$66.00

Standard Motorcycle Products Ignition Sensor Assembly - 1980-1994 Harley-Davidson XL 1984-1985 FXST 1980-1993 FLT
3 reviews $65.95

Gasbox Tumbled Stainless Steel Points Cover for Harley-Davidson Sportsters and 1970 - 1999 Big Twins
3 reviews $21.95

Cycle Standard Bayonet / Cam Harley Style Vented 2" Gas Cap - Black
33 reviews $19.84

Lowbrow Customs Motor Company Solid Brass Shifter Peg for Harleys
9 reviews $45.76

V-Factor Motorcycle Parts 18 Spoke Stainless Steel Brake Rotor - 11.5 inches - Rear - Replaces Harley-Davidson OEM #41789-92/41797-00
$65.40

Cycle Standard Throttle Cable OEM #56356-96A Harley Dyna 1996-2008 - Blacked Out
2 reviews $25.87 $36.96

Lowbrow Customs FiltroMax Big Twin Bracket - Black
3 reviews $39.45

Cycle Standard Harley-Davidson Shifter Peg - Replaces OEM #34611-65
55 reviews $7.57

Colony #7132-12 Aluminum Alloy Tubular Adjustable Pushrods & Lifter Adapters - 1966-1984 Harley-Davidson Shovelhead
1 review $85.45

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

Airspeed Cycles Pullback T-Bar Handlebars - 8 inch Rise - 1 inch - Stainless Steel
$255.00

Hawg Supply Carburetor Support Bracket for Harley-Davidson Ironheads and Shovelheads with Fuel Filter
$84.99

Drag Specialties 30A Circuit Breaker 1970-1999 Harley-Davidson Big Twin/XL 1999 Twin Cam
$7.95

Colony #7704-2 Rear Chain Adjusters - 1936-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead - Chrome Plated
11 reviews $18.16

Lowbrow Customs Competition Screw-In Gas Cap for Harley-Davidson 1996 & later - Black
32 reviews $42.17 $51.50

Fork Co., Ltd Sixties Narrow Handlebars - Stainless Steel
3 reviews $251.94

Fast Eddy Co. No. 37 Socket Tool for Oil Pump and Tappet Screen Plugs
8 reviews $27.95

Cycle Standard 1.7 inch Rise Forged Aluminum Handlebar Risers for Harley-Davidson - Chrome
10 reviews $64.97

Lowbrow Customs Blade Levers - Polished - 1996 - 2003 Harley Davidson Sportsters and 1996 - 2017 Dyna / Softail / Touring Models
30 reviews $45.25

Colony #3144-13 Transmission Kicker Cover Stud Kit 1936-84 Harley Davidson Big twins — Colony #3144-13 Transmission Kicker Cover Stud Kit 1936-1984 Harley-Davidson Big Twins - CAD Plated
3 reviews $25.00

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

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

Cycle Standard Clutch Friction Disc Set 1991-Up Harley-Davidson Sportster 90-97 Big Twin
2 reviews $130.92

Colony #7354-2 Chrome Plated Oil Tank Cap & Dipstick 1 1/4-20 Thread 1936-1954 Stock Harley-Davidson Tanks - Chrome Plated
8 reviews $27.50

Colony #2078-18 Lower Rocker Box Mounting Kit Harley-Davidson Evo Big Twin and Sportster
17 reviews $35.00

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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