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 #3635-4 Kickstand Leg Stop Kit 1936-1984 Harley-Davidson Big Twins - Parkerized
$16.78

#2399-2 Stem Nut Stock Zinc OEM 45718-71 Harley FX FXR 71-87 XL 78-87 — Colony #2399-2 Stem Nut Stock 1971-1987 Harley-Davidson FX/FXR 1978-1987 XL - Zinc Plated
5 reviews $16.70

Colony #9783-4 Headlight Visor Mounting Allen Bolt Kit 1959-Up Harley-Davidson XL/FX/FXR - Chrome Plated
3 reviews $4.76

Colony #9811-3 Ribbed Rear Axle Spacer Kit 1991-1999 Harley-Davidson Dyna Glide - Chrome Plated
$33.31

Colony #9676-5 Seat Bar Bushing Set 1937-1964 Harley-Davidson Big Twin 1929-1952 45 Solo - Parkerized
2 reviews $33.31

Colony #8875-5 Seat Bar Bushing Set 1937-1964 Harley-Davidson Big Twin 1929-1973 45 Solo/Servi-Car - CAD Plated
$33.31

Colony #8614-4 Rocker Shaft End Caps 1971-Up Harley-Davidson Shovelhead 1971-1984 XL - Chrome Plated
$33.31

Cycle Standard Master Cylinder Gasket Harley-Davidson OEM #45012-72
14 reviews $5.54

Colony #3684-12 Lower Motor Mount Kit 1966-1969 Harley-Davidson OHV Big Twins - Parkerized
$33.00

Colony #3768-5 Rubber Grommets Harley-Davidson OEM #11410 - 5 Pack
1 review $11.00

Colony #3700-5 Ignition Coil Mount Plate 1985-2003 Harley-Davidson XL 1994-2001 Touring 1991-1999 Softail 1991-1994 Dyna - Chrome Plated
1 review $11.00

Cycle Standard Transmission Mounting Plate 1986-1999 Harley-Davidson Softail - Chrome
$32.97

Colony #9626-16 Lower Motor Mount Kit 1930-1936 Harley-Davidson VL All 45 's - Parkerized
$32.95

Blue Streak High-Performance Condenser - 1970-79 Harley-Davidson
$10.95

Cycle Standard Derby Cover - Chrome - 1970-1998 Harley-Davidson Big Twins
$32.74

Cycle Standard Shift Lever - 1990-2017 Harley-Davidson Dyna/Softail - Chrome - OEM #34564-90A
$32.58

Cycle Standard Neck Post Bearing & Race Set Made in China
$15.99

Colony #2720-6 Rear Brake Shoe Pivot Stud and Cup Assembly 1938-1957 Harley-Davidson Big Twin - Parkerized
2 reviews $31.90

Colony #2998-5 Rear Brake Switch Pull Kit 1940-1957 Harley-Davidson Big Twins - CAD Plated
$31.89

Colony #8225-8 Rocker Shaft End Plug & Cap Kit 1971-Up Harley-Davidson Shovelhead 1971-1985 XL - CAD Plated
2 reviews $31.81

Colony #3274-2 Dome Shaped Front Axle Covers 1988-2011 Harley-Davidson Softail Springer/Heritage Springer - Chrome Plated
3 reviews $31.63

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

Colony #9623-16 Cylinder Base Nuts 1936-1978 Harley-Davidson Big Twins - Parkerized
3 reviews $15.64

Lowbrow Customs Pursuit Shifter Peg for Harleys - Black Aluminum
44 reviews $31.10

Colony #9683-2 Front Brake Cable Sleeve Adjuster & Nut 1928-1940 Harley-Davidson All Models - Parkerized
$15.52

Colony #8727-8 Lifter Base Allen Screw Kit Pre-1976 Harley-Davidson Case To Late Lifter Bases - Chrome Plated
$15.52

Cycle Standard Shift Lever - 1971-1974 Harley-Davidson XL And Early Big Twins (No Splines) - Chrome - OEM #34606-71, 34606-54TA
$30.96

Cycle Standard Oil Filter for Harley-Davidson XL FXR Softail Touring Models and Buell - Black - OEM #63805-80A 63796-77A
9 reviews $10.30

Colony #3683-16 Lower Motor Mount Kit 1958-1965 Harley-Davidson OHV Big Twins - CAD Plated
$30.80

Colony #2277-10 12 Point Sprocket Bolt and Washer Kit 1979-1990 Harley-Davidson XL 1973-1992 Big Twin - Chrome Plated
1 review $30.79

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

Colony #7614-2 Intake Manifold Nut Kit 1940-1954 Harley-Davidson OHV 74's 1953-1956 K/KH - CAD Plated
$30.42

Cycle Standard Clutch Cable OEM #38618-52 1952-1967 Harley-Davidson FL/EL +8 inch Extended
$30.35

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

James Gaskets Cam Change Gasket Kit - 1970-92 Harley-Davidson Big Twin
$30.09

Colony #8822-18 Top of Tank Screw & Washer Kit 1918-1936 All Harley-Davidson 1936-1952 45s - CAD Plated
$30.04

Trader Cody's Choppers Rear Master Cylinder Mount for Harley-Davidson 4 Speeds - Stainless Steel
$30.00

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

Colony #3642-2 Buddy Seat Auxiliary Spring Clip - Heavy - 1936-1964 Harley-Davidson Big Twins - Parkerized
$30.00

Colony #2625-30 Rear Fender Support Mounting Kit 1958-1980 Harley-Davidson FL/FLH - CAD Plated
5 reviews $30.00

Colony #8756-30 Primary Cover Allen Screw Kit 1936-1984 Harley-Davidson Big Twin - Chrome Plated
$30.00

Gasbox Side Mount Headlight Bracket Set for Harley 35mm Narrow Glide Front Forks
1 review $29.95

Colony #3171-12 Rubber Pushrod Cover Seals 1936-79 Harley Davidson Knucklehead Sportster — Colony #3171-12 Rubber Pushrod Cover Seals 1936-1947 Harley-Davidson Knucklehead 1957-1979 Sportster
3 reviews $7.45

Colony #2138-4 Handlebar Riser Hex Bolt Kit 1/2-13 x 3-1/2" - Chrome Plated
1 review $14.89

Colony #2129-4 Handlebar Riser Allen Bolt Kit 1/2-13 x 3" - Chrome Plated
4 reviews $14.89

Colony #9617-18 Jiffy Stand & Foot Clutch Lever Bracket Mounting Kit 1936-1978 Harley-Davidson Big Twin - Chrome Plated
$29.78

Colony #8836-10 Sprocket Nut & Bolt Kit Acorn Head 1973-Up Harley-Davidson Big Twin/XL - Spoked Wheel - Chrome Plated
$29.70

Colony #2680-4 Handlebar Riser Mounting Kit 1949-1959 Harley-Davidson Big Twins - CAD Plated
$29.70

Colony #9886-12 Floorboard Hinge Bolt Kit 1914-1940 Harley-Davidson All Models - Parkerized
2 reviews $14.74

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

Colony #2854-6-P Upper Engine Mounting Kit 1984-1999 Harley-Davidson Softail - Chrome Plated
2 reviews $14.52

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

Colony #9611-5 Rear Axle Nut and Lock Kit - 1930-1936 Harley-Davidson VL - Parkerized
$29.00

Colony #2018-8 Head Bolt Washers 1984-Early 1985 Harley-Davidson Big Twin/XL - CAD Plated
$28.97

Drag Specialties Shifter Linkage - Chrome - 1982-94 99-00 Harley-Davidson FXR
$28.79

Colony #9960-1 Oversize Plated Allen Timing Plug 11/16"-16 Threads Harley-Davidson OEM #720 - Chrome Plated
3 reviews $9.56

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 #2744-10 Center Stand Mounting Kit 1958-1981 Harley-Davidson FL/FLH
2 reviews $28.60

Cycle Standard Clutch Cable OEM #38618-52 1952-1967 Harley-Davidson FL/EL +4 inch Extended
1 review $28.44

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

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

Cycle Standard Transmission Seal and Quad O-ring OEM# 12067A
$9.41

Colony #8495-1 1937-1986 Harley-Davidson Big Twin Transmission & Sportster XL Motor Case Drain Plug OEM #707 - CAD Plated
3 reviews $9.35

Colony #7807-3 Gas Tank Fitting Kit 1950-1965 Harley-Davidson Big Twins - Chrome Plated
2 reviews $28.00

Cycle Standard Brake Clevis Pin Kit Replaces OEM# 42460-80B 1937-2024 Harley-Davidsons
$3.99

Colony #2415-4 Handlebar Riser Custom Washer Kit 1973-Up Harley-Davidson - Chrome Plated
1 review $27.83

Colony #9917-8 Rocker Arm Heat Treated Stud Kit 1948-1965 Harley-Davidson Panhead
2 reviews $27.75

Cycle Standard Kickstand Bumper Rubber - 1991-2000 Harley-Davidson Dyna OEM #50054-90
3 reviews $6.93

Cycle Standard Kickstand Spring 2002 & Up Harley-Davidson Dyna Models - Black - OEM #50057-02
9 reviews $9.17

Colony #8616-4 Rocker Shaft End Caps 1971-Up Harley-Davidson Shovelhead 1971-1984 XL - Black
$27.51

Colony #3411-15 Hex Bolt & Washer Kit Rear Wheel 1973-1998 Harley-Davidson Big Twin 1979-1990 XL - Zinc Plated
1 review $27.50

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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