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 #2714-36 Instrument Panel Base Restoration Kit 1939-1946 Harley-Davidson Big Twins
1 review $49.50

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

Colony #2908-2 Oil Tank Filler Cap and Gauge 1941-1964 Harley-Davidson Big Twins - Parkerized
$71.50

Colony #2677-10 Extra Long Seat Post Rod Nuts Spacers Kit 1936-1980 Harley-Davidson Big Twins
$82.50

Colony #2612-10 Seat Post Rod Nuts Spacer Kit 1936-1980 Harley-Davidson Big Twins
$82.50

Colony #2609-4 Instrument Panel Dash Base Contact Spring Kit 1936-1946 Harley-Davidson Big Twins
$35.75

Colony #2651-10 Front Brake Shackle Rebuilding Kit 1939 Harley-Davidson Big Twin/45's
$90.88

Colony #2783-5 Starter Pedal Axle Kit 1916-1962 Harley-Davidson - Parkerized
$30.25

Colony #2761-5 Kick Starter Pedal Axle Kit 1916-1962 Harley-Davidson - CAD Plated
2 reviews $30.25

Colony #2817-18 Oversized Top of Tank Screw and Washer Repair Kit 1918-1952 Harley-Davidson - Parkerized
$30.04

Colony #2713-42 Instrument Panel Base Restoration Kit 1947-1957 Harley-Davidson Big Twins
$25.30

Colony #2708-5 Linkert Low Speed Needle Valve 3-1/16 inch Needle 1933-1947 Harley-Davidson
$25.30

Colony #2696-5 Linkert Low Speed Needle Valve 3-1/2 inch 1948-1965 Harley-Davidson Type 2 Heads
$25.30

Colony #2703-7 Gas Tank Shut Off Rod Upper Kit 1940-1965 Harley-Davidson Big Twin/45s - Parkerized
$25.85

Colony #2873-1 Rear Axle Spacer 1958-1966 Harley-Davidson FL/FLH - Chrome Plated
$23.65

Colony #2821-3 Gas Tank Fitting Kit 1940-1949 Harley-Davidson Big Twin - Chrome Plated
1 review $28.00

Colony #2737-1 Fork Tube Cap/Plug 1984-2001 Harley-Davidson FLT - Chrome Plated
1 review $24.26

Colony #2593-5 Front Brake Control Wire Lower Connection Kit 1928-1948 Harley-Davidson Big Twins 1928-1950 45s - Parkerized
4 reviews $24.20

Colony #2719-22 Exhaust System Mounting Bolt Kit 1941-1957 Harley-Davidson Knucklehead/Panhead - Chrome Plated
$27.72

Colony #2890-1 Front Axle Spacer 1936-1948 Harley-Davidson Big Twin Springers 1942-1943 WLC 1941-1957 Servi-car - Chrome Plated
1 review $20.90

Colony #2875-1 Rear Axle Spacer 1967-1972 Harley-Davidson FL/FLH - Chrome Plated
$20.90

Colony #2772-22 Exhaust System Mounting Bolt Kit 1941-1957 Harley-Davidson Knucklehead/Panhead - Parkerized
$25.08

Colony #2910-6 Rear Stand Mounting Kit 1936 Harley-Davidson OHV 1937 Side Valve Big Twins - Parkerized
$17.52

Colony #2900-1 Motor Sprocket Nut 1991-2006 Harley-Davidson Big Twins
2 reviews $19.36

Colony #2889-1 Front Axle Spacer 1936-1948 Harley-Davidson Big Twin Springers 1942-1943 WLC 1941-1957 Servi-car - Parkerized
$16.94

Colony #2874-1 Rear Axle Spacer 1967-1972 Harley-Davidson FL/FLH - Parkerized
1 review $16.94

Colony #2872-1 Rear Axle Spacer 1958-1966 Harley-Davidson FL/FLH - Parkerized
$19.36

Colony #2862-2 Instrument Panel Dash Base 1938-1946 Harley-Davidson Big Twins/45s - CAD Plated
$19.36

Colony #2850-24 Stock Style Panhead Valve Cover Screw Kit 1951-1954 Harley-Davidson Panhead
1 review $22.00

Colony #2777-9 Headlight Bracket Mount Kit 1936-1948 Harley-Davidson Big Twin 1940-1957 45s - CAD Plated
$19.97

Colony #2742-2 Left Bearing End Oil Slinger 1936-1954 Harley-Davidson Big Twin
$16.94

Colony #2736-1 Fork Tube Cap/Bolt 1984-2001 Harley-Davidson FLT - Chrome Plated
1 review $20.31

Colony #2671-2 Instrument Panel Light Shield Kit 1939-1946 Harley-Davidson Big Twins/45s - CAD Plated
$19.36

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 #2948-3 Circuit Breaker Mounting Clamp & Stud Kit 1966-1969 Harley-Davidson FL/FLH - CAD Plated
1 review $15.73

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 #2894-7 Starter Crank and Kick Starter Pedal Mounting Kit 1941-1967 Harley-Davidson FL/FLH - Parkerized
1 review $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 #2852-6 Upper Engine Mounting Kit 1984-1999 Harley-Davidson Softail - Chrome Plated
1 review $14.52

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

Colony #2757-6 Spotlight Fork Bracket Bolt Nut Kit 1938-1961 Harley-Davidson - Chrome Plated
$16.50

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

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

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

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

Colony #2567-2 Transmission Drain Plug 1981-1992 Harley-Davidson FLT/FXR - Zinc Plated
1 review $11.13

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

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

Colony #2927-3 Front Axle Nut and Washer Kit 1973-Up Harley-Davidson FL/XL - CAD Plated
1 review $9.68

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 #2828-1 Crankcase and Chain Housing Drain Plug 1965-1984 Harley-Davidson FL 1971-1984 FX 1967-1992 XL - Chrome Plated
$9.68

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

Colony #2809-3 Clutch and Brake Hand Lever Clamp Bushing Kit 1949-1964 Harley-Davidson All Models - CAD Plated
$9.90

Colony #2730-3 Clutch and Brake Hand Lever Clamp Bushing Kit 1941-1948 Harley-Davidson - CAD Plated
2 reviews $9.90

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

Colony #2732-1 Carburetor Bowl Valve Cover Cap Brass 1933-1952 Harley-Davidson 45s 1933-1948 Sidevalve 1953-1954 Servi-car 1952-1956 K/KH
$6.05

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

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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