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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Cycle Standard Shift Lever - 1974-1984 Harley-Davidson FL 1980-1986 FXWG (With Splines) - Chrome - OEM #34606-74
$22.97

Cycle Standard Throttle Idle Cable OEM #55355-92 Harley Dyna 1992-1995 +4 inch Extended
$22.88

Colony #9616-4 Rear Stand Mounting Kit 1938-1957 Harley-Davidson Big Twins 1939-Up 45s - Chrome Plated
$22.80

Colony #9655-4 Extra Oversize Transmission Case Bottom Stud Kit 1936-1983 Harley-Davidson Big Twins - Parkerized
$22.45

Colony #3170-12 Rubber Pushrod Cover Seals 1936-79 Harley Davidson Panhead Shovelhead — Colony #3170-12 Rubber Pushrod Cover Seals 1936-1979 Harley-Davidson Panhead/Shovelhead
2 reviews $7.45

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

Colony #8762-17 Primary Cover Allen Head Screw Kit 1971-Up Harley-Davidson Shovelhead/Evo 4 Speed - Chrome Plated
2 reviews $22.34

Cycle Standard Rubber Battery Strap 1991-17 Harley-Davidson FXST FLST 80-92 FLT 78 XLCR 79 XL
2 reviews $5.58

Cycle Standard 41mm Triple Lip Fork Seal Rebuild Kit - 1949-1977 Harley-Davidson FL
$22.23

Colony #8800-12 Primary Cover Allen Screw Kit 1965-1969 Harley-Davidson Big Twin - CAD Plated
$22.00

Colony #3377-1 Control Coil Bracket 1930-1936 Harley-Davidson 45"/74"/80" Twins - Parkerized
$22.00

Colony #3346-1 Horn Power Pack Rubber Mount 1954-1964 Harley-Davidson FL/FLH/XL/XLH
$22.00

Colony #3467-3 Front Exhaust Pipe Port Clamp Bolt & Nut Kit 1965 Harley-Davidson FL/FLH - Zinc Plated
$22.00

Colony #3266-5 Rear Axle Spring Clip Set 1991-Up Harley-Davidson FL/FX/XL - Zinc Plated
5 reviews $11.00

Colony #2855-7 Rear Caliper Stabilizer Bracket Bolt Kit 1980-1985 Harley-Davidson FLT - Zinc Plated
2 reviews $22.00

Colony #9669-9 Tool Box Mounting Kit 1935-1954 Harley-Davidson All Models - Parkerized
3 reviews $22.00

Colony #9402-1 Timing Plug 1970-Up Harley-Davidson OEM #720 - Chrome Plated
$11.00

Colony #3363-1 Carburetor Choke Rod 1941-1947 Harley-Davidson OHV Big Twins - Parkerized
$21.99

Gasbox Shovelhead Exhaust Flanges - Mild Steel
12 reviews $21.95

Colony #8765-2 Point Cover Allen Head Screws 1979-Up All Harley-Davidson - Chrome Plated
3 reviews $4.38

Colony #3290-1 Control Coil Clamp 1930-1936 Harley-Davidson V/VL 1930-1931 D/DL/DLD 1932-1936 R/RL/RLD 1937-1940 WL/G - Parkerized
$21.78

Colony #3323-1 Lighting Cable Clamp 1930-1936 Harley-Davidson All Models - Parkerized
1 review $21.78

#3095-1 Transmission Adjuster Screw Support Strap Chrome Harley Big Twins 1936-57 — Colony #3095-1 Transmission Adjuster Screw Support Strap 1936-1957 Harley-Davidson Big Twins - Chrome Plated
$21.78

Colony #2650-13 Top Motor Mount Hardware 1957-E1972 Harley-Davidson XL 1952-1972 Big Twin - Parkerized
1 review $21.78

Colony #2973-4 Spacers Harley-Davidson OEM #58102-49 - 4 Pack - CAD Plated
4 reviews $10.89

Colony #7802-1 Acorn Stem Nut 1936-1977 Harley-Davidson Springers - Chrome Plated
3 reviews $21.73

Colony #3361-1 Transmission Shift Lever 1930-1936 Harley-Davidson VL 74/80 Twins - Parkerized
$21.65

Colony #2528-10-P Gas Tank Mounting Smooth Allen Kit 1990-1995 Harley-Davidson Softail - Chrome Plated
$21.51

Cycle Standard Screw-In Harley Stock Style Non-Vented Gas Cap - Left Side - 1982-1995 - Black
$21.37

Colony #8148-13 Transmission Top Cover Screw Kit 1956-1964 Harley-Davidson Big Twins - CAD Plated
2 reviews $21.30

Colony #8624-2 Front Brake Cable Adjusting Screw 1941-1948 Harley-Davidson Big Twin/45's 1941-1957 Servi-Car - CAD Plated
$21.12

Colony #9885-2 Transmission Fill Plug/Dip Stick - 1987-Up Harley-Davidson Big Twin - Chrome Plated
1 review $21.12

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

Colony #3179-8 Rocker Arm Cover Fitting Nuts and Seals 1957 - 1984 Harley-Davidson FL FX XL XLH XLCH — Colony #3179-8 Rocker Arm Cover Fitting Nuts & Seals 1957-1984 Harley-Davidson FL/FX/XL/XLH/XLCH - CAD Plated
2 reviews $20.90

#3088-1 Foot Shifter Lever Bushing Harley Big Twins 1970-84 — Colony #3088-1 Foot Shifter Lever Bushing 1970-1984 Harley-Davidson Big Twins
1 review $20.90

Colony #2972-1 Rear Axle Spacer 1971-1972 Harley-Davidson FX - Chrome Plated
$20.90

Colony #9986-8 Custom Lower Shock Mount Bolt/Nut Kit 1991-2001 Harley-Davidson Dyna - Chrome Plated
$20.70

Colony #9867-18 Transmission Mounting Kit 1986-Up Harley-Davidson FXST - Zinc Plated
$20.70

Colony #9206-12 Oil Tank Bracket to Frame Mounting Kit - 1958-1964 Harley-Davidson Panhead - CAD Plated
$20.70

Colony #3673-10 Allen Sprocket Bolts 1973-Up Harley-Davidson Big Twins/XL - Chrome Plated
$20.63

Colony #2980-11 Fender to Brace Rivets and Tool 1930-1979 Harley-Davidson All Models
2 reviews $20.57

Colony #2866-1 Rear Axle Spacer 1936-1957 Harley-Davidson Big Twins - Parkerized
$20.57

Colony #8015-4 Rear Stand Mounting Kit 1938-1957 Harley-Davidson Big Twins & 1939-Up 45's - Parkerized
1 review $20.57

V-Twin Manufacturing Distributor Hold Down Clamp 1952-1970 Harley-Davidson XL 1936-1973 WL
$20.45

Colony #9101-8 Cylinder Base Nut Set Zinc 1978-1984 Harley-Davidson Shovelhead OEM #16838-78 - Zinc Plated
1 review $20.35

Colony #3666-13 Transmission Side Cover Allen Screw Kit 1987-2006 Harley-Davidson FX/FL/Softail 1991-2005 Dyna - CAD Plated
$20.32

Colony #8409-4 Rear Brake Cross Shaft Nut & Lock Kit 1930-1957 Harley-Davidson Big Twin - Chrome Plated
$20.31

The Rough Trade Axle Wrench for Harley-Davidson Big Twin
$20.00

Gasbox Exhaust Port Clamps 1948-1965 Harley-Davidson Big Twin Models - Stainless Steel OEM #65519-48
$20.00

Colony #3299-2 Front Brake Cable Nut Washer 1930-1940 Harley-Davidson Big Twin/45's/Servi-car 1930-1934 Singles - CAD Plated
$9.99

Blue Streak High-Performance Points - 1970-79 Harley-Davidson
3 reviews $19.95

Colony #9653-4 Transmission Case Bottom Stud Kit 1936-1983 Harley-Davidson Big Twins - Parkerized
4 reviews $19.93

Colony #9406-3 Front Axle Nut Kit 1930-1936 Harley-Davidson VL 1936-1945 Big Twins - Parkerized
$19.93

Colony #3805-12 Inner Primary Cover Mounting Stud Kit 1965-1969 Harley-Davidson FL/FLH
$19.80

Colony #3707-1 Instrument Panel Cover Plate Right Side 1947-1964 Harley-Davidson All Models - CAD Plated
1 review $9.90

Colony #2086-1 Seat Post Bushing Installation Tool 1936-1957 Harley-Davidson Big Twins - Parkerized
4 reviews $19.80

Colony #9613-13 Transmission Top Cover Screw Kit 1936-1955 Harley-Davidson Big Twin - CAD Plated
$19.71

Colony #3529-7 Horn Trumpet Mount 1954-1964 Harley-Davidson Big Twins 1957-1964 Sportster
$19.67

Colony #7818-5 Shifter Lever Stud & Bushing Kit 1936-1954 Harley-Davidson - CAD Plated
$19.51

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

Cycle Standard Harley Shifter Shaft Lever OEM #33709-82A
16 reviews $19.44

James Gaskets Transmission Top Cover Gasket - 1984-1998 Harley-Davidson Big Twin 5-Speed
2 reviews $9.68

Colony #3588-1 Gas Tank Buffer 1909-1925 Harley-Davidson All 1926-1929 F/J 1930-1936 V/VL
$9.68

Colony #3267-5 Disc Front Brake Rotor to Hub Torx Screw Set 1984-Up Harley-Davidson FX/FXR/XL/FLT - Zinc Plated
6 reviews $9.68

Colony #3022-3 Front Axle Nut and Washer Kit 1972-Up Harley-Davidson Wideglides - CAD Plated
$9.68

Colony #2088-8 Front or Rear Caliper Mounting Allen Bolts Harley-Davidson Big Twins - Chrome Plated
1 review $19.36

Colony #9918-8 Rocker Arm Stud Nut Kit 1948-1965 Harley-Davidson Panhead - CAD Plated
2 reviews $19.12

Colony #2014-6 Oversize Panhead Valve Cover Screws 1948-1965 Harley-Davidson Panhead W/Alloy D Rings - CAD Plated
$19.12

Colony #9672-8 Linkert Carb Mounting Screws Harley-Davidson OEM #27422-39 - Parkerized
2 reviews $9.56

Cycle Standard Screw-in Style Gas Cap Gasket replaces Harley-Davidson OEM #61109-85
24 reviews $3.75

Colony #8162-3 Front Axle Nut Kit 1946-1971 Harley-Davidson Big Twins - Chrome Plated
$18.72

Cycle Standard Ignition Advance Unit Circuit Breaker Base Assembly 1970-Up Harley-Davidson OEM# 32577-70
$18.71

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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