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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Colony #2184-2 Stem Nut And Lockwasher Kit 1949-Up Harley-Davidson Wideglide - Chrome Plated
3 reviews $17.88

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

Colony #3031-4 Upper Inner Pushrod Covers 1957-1985 Harley-Davidson Sportster 1936-1983 OHV Big Twin - CAD Plated
1 review $34.05

Colony #2658-5 Carburetor Throttle Lever Wire Block All Harley-Davidson Linkert & Bendix Carburetors - CAD Plated
$13.62

Colony #8204-4 Hydraulic Lifter Converters Eliminate Hydraulic Units 1953-Up Harley-Davidson Big Twins
$34.05

Drag Specialties Points & Condenser Kit 1948-1969 Harley-Davidson Big Twin 1957-1970 XL
1 review $16.59

Cycle Standard Laydown License Plate Mount - Black - Bolt-on Fitment for 1955 - 2018 Harley-Davidson
22 reviews $37.76

Cycle Standard 10 Hole Clutch Pressure Plate 1941-1984 Harley-Davidson Big Twins
1 review $12.22

Colony #9419-19 Transmission Mounting Kit 1965-Early 1977 Harley-Davidson Big Twin - Zinc Plated
4 reviews $33.67

Colony #8807-17 Motor Mounting Kit Upper & Lower 1970-1984 Harley-Davidson Big Twin - Zinc Plated
2 reviews $33.67

Cycle Standard 41mm Fork Seal Rebuild Kit - 1949-1977 Harley-Davidson FL
$17.66

Colony #8457-20 Heat Treated Cap Style Head Bolt Kit 1948-1983 Harley-Davidson Panhead/ Shovelhead - Chrome Plated
$66.63

Fast Eddy Co. No. 4 Cam Gauge Pins .105" 1989 & earlier Harley Big Twins
1 review $21.95

Gasbox S&S Carburetor Support Bracket - Harley-Davidson Evo Big Twin and Strokers - Tumbled Stainless
8 reviews $21.95

Cycle Standard Clutch Cable OEM# 38618-52 1952-1967 Harley-Davidson FL/EL
$23.51

Colony #2147-8 Handlebar Riser Cover Mounting Studs & Chrome Acorns 1949-1959 Harley-Davidson Big Twin - Chrome Plated
1 review $32.89

Colony #2513-3 Clutch Drive Hub Stud Nut Kit 1947-1984 Harley-Davidson Big Twin 1947-1973 45's - Parkerized
7 reviews $7.26

Gasbox Front Exhaust Pipe 1966-1969 Harley-Davidson Shovelhead - Bare Steel - OEM# 65443-66
1 review $65.00

Drag Specialties Shifter Linkage - Black - 1984-2021 Harley-Davidson FLHT/FLHR/FLHX/FLTRX/FLTRU 2000-17 FLST/FLS
$64.84

Drag Specialties 58" Shovelhead Clutch Cable for 1968-1986 Harley Big Twin 4-Speed - Replaces OEM 38618-68C
7 reviews $64.84

Drag Specialties Clutch Cable Harley-Davidson 4 Speed Big Twin 1968-86 - 56" Long
2 reviews $64.84

Colony #7823-12 Pushrod Covers 1948-Early 1979 Harley-Davidson Panhead & Shovelhead - Chrome Plated
4 reviews $64.80

Colony #7714-20 Head Bolt Set CAD Plated 1940-1947 Harley-Davidson Knucklehead Engines - CAD Plated
$64.09

Cycle Standard Replacement Dished Sprocket - Black - 49 Tooth - 1973-1985 Harley-Davidson Big Twin 1979-81 XL
$63.99

Drag Specialties Derby Cover - Wrinkle Black - 1999-2018 Harley-Davidson Big Twin/Twin Cam
$63.81

Colony #3332-1 Stem Crown Nut 1936-1938 Harley-Davidson Big Twin Springer - Chrome Plated
$63.80

Colony #8856-8 Cylinder Base Stud Set 1930-1977 Harley-Davidson Big Twins OEM# 16831-30
3 reviews $31.87

Samwel Supplies Axle for Inline Springer Front Forks - Chrome Plated
$63.41

Colony #8873-18 Saddle to Seat Tree Mounting Kit 1934-1980 Harley-Davidson Models (Except FX/XL) - CAD Plated
1 review $31.50

Colony #3037-8 Oil Tank Mounting Kit 1936-1957 Harley-Davidson Big Twins - Parkerized
$15.73

Colony #9680-6 Front Fender Mounting Kit 1936-1948 Harley-Davidson Springers - Parkerized
$20.85

Colony #9201-33 Windshield Mounting Kit 1949-Up Harley-Davidson FL/FX/XL/K - CAD Plated
$31.14

Colony #8777-20-P Smooth Allen Head Bolt Kit 1948-Up Harley-Davidson Panhead/Shovelhead - Chrome Plated
$62.27

Colony #8927-3 Gas Strainer Screen 1932-1964 Harley-Davidson Big Twins/45s OEM# 62265-32
1 review $20.70

Cycle Standard 3-1/2 inch Forged Aluminum Handlebar Risers - Black
$75.72

Colony #3562-1 Stem Crown Nut /Dust Shield 1939-1948 Harley-Davidson Big Twin Springer
$60.50

Colony #7710-18 Head Bolt Washer Kit 1940-1947 Harley-Davidson 45's/75's/80's with Aluminum Heads - CAD Plated
1 review $33.31

Colony #3136-7 Steering Damper Upper Kit 1936-1948 Harley-Davidson Big Twins - Chrome Plated
$65.99

Colony #3189-4 Chrome Rocker Arm Shaft Nut Set 1936 - 1947 Harley-Davidson Knuckleheads — Colony #3189-4 Rocker Arm Shaft Nut Set 1936-1947 Harley-Davidson Knuckleheads - Chrome Plated
$65.99

V-Twin Manufacturing Forged Floorboard Tab Set for 1-1/8 inch Tubing
$65.87

The Rough Trade 2-1/8" Wrench for Harley-Davidson Large Port Knucklehead & Panhead Intake
$20.00

Gasbox 4 Speed Transmission Mounting Plate for 1965 - 1979 Harley-Davidson Big Twins OEM # 47698-65
2 reviews $59.95

Gasbox 4 Speed Transmission Mounting Plate for 1937 - 1957 Harley-Davidson Big Twins OEM # 47698-36
1 review $59.95

Gasbox Y-Pipe Exhaust Pipe 1941-1957 Factory Rigid Harley-Davidson Models - Bare Steel OEM # 65505-41
2 reviews $59.95

Cycle Standard Throttle Idle Cable OEM 55355-92 Harley Dyna 1992-1995
1 review $19.93

Colony #3656-1 Linkert Main Nozzle 1933-1958 Harley-Davidson Big Twin/45's
1 review $30.00

Gasbox Front Exhaust Pipe 1948-1965 Harley-Davidson Panhead - Bare Steel - OEM# 65440-48
$60.00

Colony #2095-4 Handlebar Riser Allen Bolt Kit 1/2-13 x 2-3/4" Harley-Davidson FXST/FLST Models - Chrome Plated
2 reviews $14.89

Colony #9685-12 Floorboard Hinge Bolt Kit 1941-1984 Harley-Davidson All Models - Parkerized
3 reviews $14.89

Cycle Standard Oil Filter for Harley-Davidson XL FXR Softail Touring Models and Buell - Chrome - OEM# 63805-80A 63796-77A
8 reviews $12.38

Colony #9637-13 Transmission Kicker Cover Stud Kit 1936-1984 Harley-Davidson Big Twin - Parkerized
3 reviews $20.00

Cycle Standard Throttle Cable OEM 56356-92 Harley Dyna 1992-1995 +4 inch Extended
$20.89

Colony #2369-8 Cylinder Head Motor Brace Mounting Kit 1948-1965 Harley-Davidson Panhead - CAD Plated
6 reviews $19.48

Colony #2584-7 Steering Damper Upper Kit 1936-1948 Harley-Davidson Big Twin - Chrome Plated
$58.30

Colony #2724-10 10mm Brake Line Banjo Bolt Crush Washers 2008-Up Harley-Davidson Touring 2006-Up VRSC - 10 pack
1 review $14.52

Cycle Standard Oil Filter for Harley-Davidson Sportster and Big Twin Models - Black - OEM# 63782-80
$12.08

Colony #3233-10 Shifter Assembly Cover Screw Kit 1965 - early 1979 Harley-Davidson FL FX — Colony #3233-10 Shifter Assembly Cover Screw Kit 1965-E1979 Harley-Davidson FL/FX
$14.22

Colony #8909-13 Transmission Side Cover Allen Head 1987-2006 Harley-Davidson FX/FL/Softail 1991-2005 Dyna - Chrome Plated
$28.42

Colony #8205-8 Saddle Bag Mounting Kit 1934-1957 Harley-Davidson - Chrome - Chrome Plated
1 review $28.42

Colony #3303-5 Fork Bracket Bolt and Clip Kit 1950-1977 Harley-Davidson FL/FLH - Parkerized
$56.65

Cycle Standard Oil Temperature Dipstick OEM# 62896-00 Harley-Davidson 2000 & Up Softail
17 reviews $31.29

Colony #8231-26 Transmission Mounting Kit 1936-1964 Harley-Davidson Big Twin - Chrome Plated
1 review $56.18

Colony #8847-5 Disc Brake Rotor to Hub Flat Allen Head Screw 1982-1985 Harley-Davidson Big Twin Cast Wheels - Chrome Plated
$18.72

Colony #8918-19 Primary Cover Cap Screw Kit 1989-2006 Harley-Davidson Softail 1991-2005 Dyna - Chrome Plated
$56.11

Gasbox CV Carburetor Support Bracket - 1999 - 2006 Harley-Davidson Twin Cam
8 reviews $27.99

Colony #2538-2 Ignition Timer Cover Stud Kit 1972-1979 Harley-Davidson Big Twin - Zinc Plated
1 review $13.92

Cycle Standard Oil Filter for Harley-Davidson Sportster and Big Twin Models - Chrome - OEM# 63782-80
1 review $13.87

James Gaskets Primary Cover & Inspection Cover Gasket Kit 1984-1986 Harley-Davidson FL/FLH/FX/FXE/FXWG 1984-1988 Softail
$55.23

Colony #2311-2 Pike Nut Fork Tube Cap/Plug 1978-Up Harley-Davidson FL/FXWG/Softail - Chrome Plated
$27.50

Colony #2693-1 Spoke Nipple Wrench Harley-Davidson Big Twins/45s/Servi-car
$55.00

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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