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 #3571-10 Disc Brake Rotor Allen Screw Set 1978-1982 Harley-Davidson FX/XL - Zinc Plated
2 reviews $15.43

Colony #9011-5 Linkert Carb Support Bracket 1930-1938 Harley-Davidson OEM #1110-33 - Parkerized
$15.40

Colony #8014-2 Rear Chain Adjuster Screws - 1936-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead - CAD Plated
2 reviews $15.29

Colony #7111-2 Upper Spring Retainers - 1936-1948 Harley-Davidson Big Twin Spiringer 1932-52 45's 1953-54 Servicar - Chrome Plated
$15.27

Cycle Standard Kickstand Bumper Rubber - 1991-2000 Harley-Davidson Dyna OEM #50054-90
3 reviews $7.62

Colony #3721-1 Ovesize Allen Timing Plug 1970-1998 Harley-Davidson Dyna 1970-1999 Softail 1970-2003 Sportster - CAD Plated
$7.58

Gasbox Front Motor Mount Spacer Plate Harley-Davidson Knucklehead Panhead UL OEM #438-48 24795-48
5 reviews $15.00

Cycle Standard Battery Bottom Plate Bracket - Chrome - Early Harley-Davidson 6 Volt Big Twins
$14.99

Drag Specialties 35mm Upper Fork Slider Bushing 1984-1987 Harley-Davidson FX/FXE/FXR 84-87 XL OEM# 45413-84
$14.93

Colony #9872-10 License Plate Mounting Kit Button Allen Harley-Davidson - Chrome Plated
3 reviews $7.45

Colony #8016-4 Chrome Plated Acorn Dash Mounting 1977-1985 Harley-Davidson FX - Chrome Plated
$14.74

James Gaskets Points Cover Gasket 1971-1978 Harley-Davidson Big Twin
2 reviews $1.34

Colony #2816-3 Front Axle Nut Kit 1946-1971 Harley-Davidson Big Twins All Models - Parkerized
1 review $14.74

Colony #3565-1 Air Cleaner Spring 1941-1965 Harley-Davidson FL 1941-1948 UL 1941-1952 WL - Parkerized
$14.52

Colony #2610-1 Switch Stem Handle 19387-1938 Harley-Davidson Big Twins - CAD Plated
$14.52

Colony #3287-2 Headlight Lens Retainer Spring Set 1936-1948 Harley-Davidson Big Twins 1935-1952 45s 1935-1957 Servicar
1 review $14.52

Colony #2852-6 Upper Engine Mounting Kit 1984-1999 Harley-Davidson Softail - Chrome Plated
1 review $14.52

Colony #2694-3 Oil Tank Oil Line Fitting Kit 1938-1964 Harley-Davidson Big Twins
$14.52

Colony #2624-2 Oil Pump Cover Oil Pipe Nipple 1950-1964 Harley-Davidson Big Twins - CAD Plated
3 reviews $7.26

Colony #2598-1 Carburetor Needle Valve Lever Screw 1927-1965 Harley-Davidson Linkert Carburetors - CAD Plated
$7.26

Colony 8761-7-P Timing Cover Smooth Allen Screw Kit 1970-1992 Harley-Davidson Shovelhead/Evo - Chrome Plated
1 review $14.51

Colony #9679-2 Generator Screw Kit 1936-1957 Harley-Davidson Big Twins - Parkerized
1 review $7.17

Colony #3728-4 Rear Axle Nut & Washer Kit 1973-Up Harley-Davidson Big Twins 1979-Up XL
$14.30

Colony #3160-3 Starter Gear Bump Plate Screw 1936-78 Harley Davidson — Colony #3160-3 Starter Gear Bump Plate Screw 1936-1978 Harley-Davidson Big Twins - Parkerized
3 reviews $14.30

Colony #2292-8 Front Fender Mounting Kit 1951-1978 Harley-Davidson FL/FLH - Chrome Plated
$14.16

Colony #8443-2 Generator Chrome Cap Screw Set Harley Davidson 1958-69 Pan Shovel
$13.94

Colony #7612-3 Oil Line/Vent Line Fittings Pre-1965 Harley-Davidson Big Twins - CAD Plated
2 reviews $13.94

James Gaskets Replacement Float Bowl O-ring for 1992-2006 Harley-Davidson CV Carbs
$6.96

Colony #3325-4 Fuel Line Fitting Nut & Seal Kit 1950-1965 Harley-Davidson FL 1950-1952 45's 1950-1958 Servi-Car - CAD Plated
$13.92

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

Colony #2439-1 Transmission and Motor Case Drain Plug 1937-1986 Harley-Davidson Big Twin - Chrome Plated
$6.96

Colony #8747-12-P Oil Pump Mounting Kit Smooth Allen Screw Kit 1978-1991 Harley-Davidson Shovelhead & Evolution - Chrome Plated
$13.78

Drag Specialties Kickstarter Ratchet Gear Key 1940-1986 Harley-Davidson Big Twin 4 Speeds OEM# 3339350
$1.95

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

Colony #9016-3 Dash Mounting Kit Button Allen Head 1986-Up Harley-Davidson FXR (Except 88-Up FXRS) - Chrome Plated
$6.78

Colony #8754-2-P Generator Smooth Allen Screws 1958-1969 Harley-Davidson Panhead & Shovelhead - Chrome Plated
$13.55

Colony #2109-12-P Rear Master Cylinder Smooth Allen Mounting Kit 1982-1994 Harley-Davidson FXR 1984-1995 Softail - Chrome Plated
$13.40

Colony #2913-2 Rocker Stud Spacer Kit 1931-1940 Harley-Davidson Big Twins - Parkerized
$13.31

Colony #2523-5 Gas Tank Allen Mounting Kit 1988-1994 Harley-Davidson FXR - Chrome Plated
$13.22

Cycle Standard Clutch Pushrod for Harley-Davidson Big Twins OEM #37088-90
$13.20

Colony #9700-1 Transmission Filler Plug 1936-Up Harley-Davidson Big Twin - Parkerized
3 reviews $13.20

Colony #9813-12 Beehive Tail Lamp Mounting Kit 1936-1946 Harley-Davidson - Parkerized
$13.20

Drag Specialties High-Performance Mineral Primary Oil for Big Twins - 1 quart
$12.95

Colony #8852-4 Front Axle Nut Kit 1929-1936 Harley-Davidson 45 Solo OEM #0128 - Chrome Plated
$6.38

Colony #8730-8 Rocker Shaft Chrome Plated Acorn Nut & Washer Kit 1966-1985 Harley-Davidson Shovelhead 1957-1985 Sportster - Chrome Plated
1 review $12.74

Colony #8701-2 Tappet Oil Screen Plug 1970-1980 Harley-Davidson Big Twins OEM #657 - Chrome Plated
1 review $12.74

Colony #8400-8 Rocker Shaft Cap Nut & Washer Kit 1966-1985 Harley-Davidson Shovelhead 1957-1985 Sportster - Chrome Plated
$12.74

Colony #3356-4 Rear Fender Support Mount Screws 1984-2000 Harley-Davidson Softail 1980-1986 FXWG - Chrome Plated
1 review $12.46

Colony #2073-2 Tappet Oil Screen/Pump Check Valve/Relief Valve 1981-Up Harley-Davidson Big Twin - Chrome Plated
$12.34

Colony #8702-2 Oil Pump Check Valve Plug 1936-1980 Harley-Davidson Big Twins OEM #26362-36 - Chrome Plated
1 review $12.34

Colony #8905-7 Transmission Shifter Cover Allen Head Screw Kit 1980-1986 Harley-Davidson Big Twin - Chrome Plated
$12.29

Colony #3512-4 Tappet Adjuster Locknuts 1915-1939 Harley-Davidson Singles/45s/74"/80" - Parkerized
$12.10

Colony #3546-2 Handlebar Grips End Plugs 1953-1961 Harley-Davidson K/KH/XL/45's/FL - CAD Plated
$12.10

Colony #3282-4 Rocker Arm Cover Gasket Kit 1936-1947 Harley-Davidson Knucklehead
$12.10

Colony #3268-10 Disc Front Brake Rotor to Hub Screw & Nut Kit 1984-Up Harley-Davidson FXST/FXWG - Zinc Plated
$12.10

Colony #2807-1 Oversized Transmission and Oil Tank Drain Plug 2000-Up Harley-Davidson Big Twins - Chrome Plated
1 review $12.10

Colony #9305-7 Timing Cover Screw Kit 1970-1980 Harley-Davidson Shovelhead - Chrome Plated
1 review $12.10

Colony #9217-4 Handlebar Bolt Kit Harley-Davidson 1936-1948 Big Twin Springers 1940-Up 45 Springers - Chrome Plated
$12.10

Colony #3758-3 Chain Oiler Adjusting Screw Kit L1950-1964 Harley-Davidson OHV 1958-1969 Servi-car - Parkerized
$12.09

Cycle Craft #160 Main Jet - 1988-2006 Keihin CV Carburetor
$5.99

Colony #9203-3 Clutch Lever Rod Bolt 1952-1964 Harley-Davidson Big Twin OEM #36921-52 - Chrome Plated
$11.96

Drag Specialties 50A Circuit Breaker 1970-1999 Harley-Davidson Big Twin/XL 1999 Twin Cam
$11.95

Colony #9931-8 Intake Manifold to Cylinder Head Allen Kit 1990-1994 Harley-Davidson Big Twin/XL
1 review $5.96

Colony #9758-2 Fork Slider Drain Screws Button Head Allen 1977-1984 Harley-Davidson FL 1977-1984 FXWG/FLT 1980-Up Softail - Chrome Plated
5 reviews $5.95

Colony #3210-9 Brake Rod Clevis Pin Kit 1930 - 1969 Harley-Davidson Big Twins — Colony #3210-9 Brake Rod Clevis Pin Kit 1930-1969 Harley-Davidson Big Twins - Parkerized
1 review $11.80

Colony #9985-24 Valve Cover Washers 1954-1965 Harley-Davidson Panhead - CAD Plated
$11.56

Colony #3643-3 Shift Rod Stud 1951-E1979 Harley-Davidson FL - Chrome Plated
$11.55

Colony #8766-10 Handlebar Lever Mount Screws 1973-1981 Harley-Davidson Big Twin/Sportster - Chrome Plated
$11.53

Colony #8747-12 Oil Pump Mounting Kit 1978-1991 Harley-Davidson Shovelhead/Evo - Chrome Plated
$11.53

Colony #2291-8 Front Fender Mounting Kit 1951-1978 Harley-Davidson FL/FLH - CAD Plated
1 review $11.17

Colony #2290-8 Front Fender Mounting Kit 1951-1978 Harley-Davidson FL/FLH - Parkerized
$11.17

Colony #9875-2 Oil Screen Plug 1966-1969 Harley-Davidson Big Twins - CAD Plated
$11.14

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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