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 #2641-3 Front Brake Drum Grease Fitting Extension 1936-1948 Harley-Davidson Big Twin 1941-1957 Servi-car
$16.94

Colony #2581-6 Shifter Lever Stud Kit 1936-1937 Harley-Davidson Big Twin with Handshift/45's
$19.51

Colony #2896-7 Starter Crank and Kick Starter Pedal Mounting Kit 1941-1967 Harley-Davidson FL/FLH - Chrome Plated
$18.15

Colony #2895-7 Starter Crank and Kick Starter Pedal Mounting Kit 1941-1967 Harley-Davidson FL/FLH - CAD Plated
$18.15

Colony #2706-5 Clutch Booster Bracket Mounting Kit 1952-1967 Harley-Davidson FL/FLH - Chrome Plated
1 review $18.15

Colony #2705-5 Clutch Booster Bracket Mounting Kit 1952-1967 Harley-Davidson FL/FLH - Parkerized
$15.73

Colony #2924-6 Air Cleaner Mounting Screw Kit 1/8" Longer Screws 1956-1965 Harley-Davidson Twins - CAD Plated
$16.94

Colony #2608-3 Floorboard Mounting Stud 1924-1928 Harley-Davidson All Models - Parkerized
$17.60

Colony #2753-5 Tube Hose and Cable Straps 1965-1971 Harley-Davidson FL/FX 1958-1971 Sidecar - CAD Plated
$13.31

Colony #2664-5 Oversized Carburetor Throttle Lever Wire Block Kit Linkert & Bendix Carburetors - CAD Plated
$13.62

Colony #2640-1 Chain Housing Cover Cap 1965-Early 1966 Harley-Davidson FL/FLH
1 review $13.31

Colony #2853-6 Upper Engine Mounting Kit 1984-1999 Harley-Davidson Softail - Zinc Plated
1 review $12.71

Colony #2794-6 Grease Zerk Fitting 1936-1984 Harley-Davidson - 6 Pack - Parkerized
5 reviews $12.74

Colony #2628-4 Front Brake Cable Handlebar Clip 1928-1948 Harley-Davidson Big Twins 1932-1957 Servi-cars - Parkerized
$21.00

Colony #2627-4 Spark Control Coil Frame Clamp 1937-1946 Harley-Davidson Big Twins - Parkerized
$21.00

Colony #2566-2 Transmission Drain Plug 1981-1992 Harley-Davidson FLT/FXR - Chrome Plated
1 review $12.53

Colony #2951-1 Wire Clip 1951-1969 Harley-Davidson Big Twins 1963-E1967 Servi-car - Parkerized
1 review $12.10

Colony #2758-6 Spotlight Fork Bracket Bolt Nut Kit 1938-1961 Harley-Davidson - CAD Plated
$14.30

Colony #2712-1 Brake Shaft Cross Over Bushing Installation Tool 1937-1957 Harley-Davidson Big Twins
1 review $12.10

Colony #2632-3 Circuit Breaker Adjusting Screw Kit 1947-1964 Harley-Davidson Big Twins/45's - CAD Plated
$12.10

Colony #2805-5 Fender Hinge Mounting Kit 1930-1942 Harley-Davidson All Models
$10.89

Colony #2796-2 Rear Brake Cross Over Shaft Grease Fitting 1938-1957 Harley-Davidson Big Twin - CAD Plated
2 reviews $10.29

Colony #2877-2 Spring Guide Collar Set 1929-1980 Harley-Davidson All Models
2 reviews $9.68

Colony #2849-14 Batwing Fairing Mount Button Head Allen Kit 1996-Up Harley-Davidson - Chrome Plated
6 reviews $9.08

Colony #2749-4 Handlebar Bolt Kit 1936-1939 Harley-Davidson Big Twin - Parkerized
$10.29

Colony #2611-8 Air Cleaner Cover Retaining Screw Kit 1936-1939 Harley-Davidson Big Twin 1936 45's - Parkerized
$9.68

Colony #2892-3 Starter Crank Clamp Bolt 1941-1967 Harley-Davidson FL/FLH - CAD Plated
$11.00

Colony #2863-7 Negative Brush Holder Assembly 1932-1951 Harley-Davidson Big Twins/45s - CAD Plated
$7.87

Colony #2806-5 Fender Hinge Mounting Kit 1943-1979 Harley-Davidson All Models
$8.47

Colony #2623-1 Oil Pressure Switch Nipple 1939-1969 Harley-Davidson Big Twins - CAD Plated
$8.47

Colony #2824-1 Crankcase and Chain Housing Drain Plug 1965-1984 Harley-Davidson FL 1971-1984 FX 1967-1992 Sportster - CAD Plated
$7.26

Colony #2652-3 Wheel Bearing Seal Kit 1935-1966 Harley-Davidson W/WL/UL/EL/FL/FLH
3 reviews $8.47

Colony #2878-3 Starter Crank Pin Stud Kit 1936-Up Harley-Davidson Big Twins - CAD Plated
2 reviews $6.05

Colony #2643-2 Low Speed Needle Valve Lever Spring Collar 1927-1965 Linkert Carburetor
2 reviews $6.05

Colony #2631-8 Front Crash Bar Mounting Kit 1951-1954 Harley-Davidson Big Twin - CAD Plated
$6.36

Colony #2586-1 Timer Cable Clamp 1949-1964 Harley-Davidson Big Twin - CAD Plated
1 review $7.26

Colony #2733-2 Fork Slider Drain Screws 1949-1977 Harley-Davidson FL - CAD Plated
$3.99

Colony #2760-3 Front Brake Cable to Fork Clip 1936-1948 Harley-Davidson Big Twin 1941-1957 45s 1941-Up Servi-car - Parkerized
2 reviews $7.15

Colony #2442-8 High Performance Cylinder Studs 1983-1999 Harley-Davidson Big Twin Evo
$120.18

Colony #2212-1 Harley-Davidson Gas Strainer Assembly - 1/4 inch Barbed Fitting - CAD Plated
2 reviews $76.76

Colony #2262-4 Pike Nut Headbolt Covers 1985-Up Harley-Davidson FL/FX/XL - Chrome Plated
$54.14

Colony #2232-4 Headbolt Smooth Covers 1985-Up Harley-Davidson FL/FX/XL - Chrome Plated
1 review $52.14

Colony #2299-10 Front Brake Shackle Rebuilding Kit 1936-1938 Harley-Davidson Big Twin/45's
$81.21

#2256-5 Chrome Front Axle Nut Spacers Washer Kit Harley Dyna 04-05 — Colony #2256-5 Front Axle Nut Washer Spacers Kit 2004-2005 Harley-Davidson Dyna - Chrome Plated
$43.45

Colony #2281-18 Spark Coil Mounting Kit 1937-1947 Harley-Davidson Big Twins - Parkerized
$47.38

Colony #2205-4 Swing Arm Pivot Hex Bolts 1984-1999 Harley-Davidson Softail - Chrome Plated
$47.38

Colony #2493-6 Rear Fender Frame Clamp Bolt Kit 1936-1957 Harley-Davidson Big Twin - Parkerized
1 review $42.38

Colony #2379-36 Transmission Top Cover Mounting Kit 1915-1930 Harley-Davidson Twins - Parkerized
$42.38

Colony #2429-1 Gear Shaft Nut Installation Tool L1954-1989 Harley-Davidson Big Twins
1 review $41.75

Colony #2407-8 Chain Adjuster Swingarm End Cover Kit 1985-1996 Harley-Davidson FLT - Chrome Plated
$41.29

Colony #2456-10 Tool Box Mounting Kit 1931-1934 Harley-Davidson Twins - Parkerized
$39.22

Colony #2498-1 Pike Nut Fork Tube Cap/Plug 1973-1985 Harley-Davidson Sportster - Chrome Plated
$35.42

Colony #2306-16 Electrical Terminal Plate 1959-1969 Harley-Davidson Big Twin
$33.84

Colony #2305-12 Electrical Terminal Plate 1949-1957 Harley-Davidson Big Twin
3 reviews $33.84

Colony #2452-2 Clutch Tension Adjusting Nut and Lock Washer 1936-1940 Harley-Davidson Big Twin - Parkerized
$31.63

#2371-1 Fork Tube Bolt OEM 45993-86 Harley XL FX 85-87 — Colony #2371-1 Fork Tube Bolt 1985-1987 Harley-Davidson XL/FX - Chrome Plated
$31.50

Colony #2276-10 Sprocket 12 Point Bolt and Nut Kit 1973-Up Harley-Davidson Big Twin and XL - Chrome Plated
4 reviews $30.79

Colony #2275-10 Sprocket 12 Point Bolt and Nut 1985-1992 Kit Harley-Davidson Big Twin - Chrome Plated
1 review $30.79

#2372-1 Fork Tube Bolt OEM 45993-73 Harley XL FX 73-85 — Colony #2372-1 Fork Tube Cap/Bolt 1973-1985 Harley-Davidson XL/FX - Chrome Plated
1 review $32.60

Colony #2419-8 Cylinder Base Pike Nut Set 1978-1984 Harley-Davidson Shovelhead - Chrome Plated
$29.73

Colony #2316-5 Foot Brake Lever Stud 1939-1957 Harley-Davidson UL/Panhead/Knucklehead 1939-73 WL/WLA/WLC/Servi-car
$27.07

Colony #2310-5 Oversized Foot Brake Lever Stud 23/32" OD 1939-1957 Harley-Davidson UL/Panhead/Knucklehead 1939-1973 WL/WLA/WLC/Servi-car
1 review $27.07

Colony #2519-2 Front Axle Smooth Covers 1991-2003 Harley-Davidson Dyna 1988-2007 Sportster - Chrome Plated
1 review $27.50

Colony #2436-10 #2438-5 Gas Tank Pike Nut Mounting Kit 1991-Up Harley-Davidson Dyna - Chrome Plated
1 review $27.23

Colony #2215-4 Swing Arm Pivot Hex Bolts 1984-1999 Harley-Davidson Softail - Chrome Plated
3 reviews $27.07

#2373-1 Fork Tube Bolt OEM 45756-59 Harley Superglide 71-72 K XL 52-72 — Colony #2373-1 Fork Tube Cap/Bolt 1971-1972 Harley-Davidson Superglide 1952-1972 K/XL - Chrome Plated
1 review $26.07

Colony #2506-5 Brake Shell Dowel Pin Set 1937-1972 Harley-Davidson Big Twin 1937-1952 45's
$25.30

Colony #2203-8 Safety Guard Mounting Kit 1937-1947 Harley-Davidson Big Twins 1955-1957 Panhead - Parkerized
$25.05

Colony #2541-19 Luggage Carrier Mounting Kit 1950-1953 Harley-Davidson Big Twin - Parkerized
1 review $24.04

Colony #2412-2 Crank Pin Nut Set 1954-E1981 Harley-Davidson 61"/80"
$32.00

Colony #2543-10 Circuit Breaker to Coil Wire Assembly 1949-1964 Harley-Davidson Twins
$24.20

Colony #2364-16 Lifter Base Screw Kit 1954-1975 Harley-Davidson Big Twins - Chrome Plated
2 reviews $22.78

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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