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 #2770-4 Kick Starter Pedal Mounting Kit 1942-Up Harley-Davidson - Parkerized
1 review $14.30

Lowbrow Customs PVC Spacer Kit For Extended 35mm Fork Tubes
$14.26

Drag Specialties Clutch Cable OEM #38599-83A Harley-Davidson 5 Speed Big Twin 1980-1986
$56.13

Colony #2450-1 Wire Clip Front Frame Leg 1936-1969 Harley-Davidson Big Twin - Parkerized
1 review $13.92

Colony #8748-12 Transmission Top Cover Allen Screw 1965-1978 Harley-Davidson Big Twin - Chrome Plated
2 reviews $27.83

James Gaskets Primary Cover & Inspection Cover Gasket Kit 1984-1986 Harley-Davidson FL/FLH/FX/FXE/FXWG 1984-1988 Softail
$55.23

Cycle Standard Handlebar Clamp - Finned - Black
$27.59

Colony #9937-20 Front Motor Mount Allen Kit 1991-Up Harley-Davidson Dyna - Chrome Plated
1 review $18.34

Colony #2916-2 Starter Shaft Nut and Spacer Kit 1965-1969 Harley-Davidson FL
2 reviews $27.50

Colony #2573-4 Shock Mounting Kit 1984-1999 Harley-Davidson Softail - Chrome Plated
2 reviews $27.50

Colony #9694-19 Oil Pump Mounting Kit 1936-1967 Harley-Davidson OHV Big Twin - Parkerized
3 reviews $27.50

Colony #7518-4 Aluminum Alloy Tubular Pushrods 1936-1947 61c.i. Harley-Davidson Knucklehead
$55.00

Colony #7122-4 Aluminum Alloy Tubular Pushrods - 1948-1952 Harley-Davidson 74's
$55.00

Clymer Manuals 1948-1965 Harley Davidson Panhead Manual
$54.95

Colony #3026-12 Pushrod Covers 1940-1947 Harley-Davidson Knucklehead - Parkerized
$54.67

Colony #3591-10 Sprocket Bolt & Nut Kit 1973-Up Harley-Davidson Big Twins/XL - Zinc Plated
$18.15

Colony #3168-16 Footboard Mounting Kit 1965-69 Harley Davidson Big Twins — Colony #3168-16 Footboard Mounting Kit 1965-1969 Harley-Davidson Big Twins - Parkerized
1 review $54.45

Colony #2711-2 Brake Shaft Cross Over Bushing Kit 1937-1957 Harley-Davidson Big Twins
4 reviews $18.15

Colony #8715-4 Rear Axle Nut & Washer Kit 1973-Up Harley-Davidson Big Twin 1979-Up XL - Chrome Plated
1 review $18.15

Samwel Supplies Reproduction Bearing Adjuster Nuts for Springer Forks - CAD Plated
$54.43

Samwel Supplies Reproduction Bearing Adjuster Nuts for Springer Forks - Parkerized
8 reviews $54.19

Colony #2264-2 Pike Nut Front Axle Covers 1988-2007 Harley-Davidson Sportster 1991-2003 Dyna - Chrome Plated
4 reviews $54.14

Colony #2263-2 Pike Nut Front Axle Covers 1972-1999 Harley-Davidson FL 80-86 FXWG 84-06 Softail 88-94 FXR - Chrome Plated
2 reviews $54.14

Colony #2260-2 Pike Nut Rear Axle Covers 1989-2004 Harley-Davidson XL 1991-2005 Dyna - Chrome Plated
2 reviews $54.14

Cycle Standard Harley Engine Temperature Sensor - Replaces 32446-99
3 reviews $18.01

Colony #7608-6 Rear Rocker Stud Assembly 1930-1948 Harley-Davidson Big Twin Springers
1 review $53.96

Colony #7607-7 Front Rocker Stud Assembly 1930-1948 Harley-Davidson Big Twin Springers
$53.96

Colony #9667-8 Oil Tank Mounting Kit - 1936-1957 Harley-Davidson Kuncklehead/Panhead - Parkerized
$13.40

Colony #3425-10 Disc Brake Rotor Bolt Kit 1973-1980 Harley-Davidson FL Rear 1973-1974 FL Front 1973 FX/XL Front - Zinc Plated
2 reviews $13.31

Cycle Standard Headlight Visor - 7" Headlight - Chrome - Replaces OEM #69733-05
$26.55 $35.40

Colony #8449-22 Rocker Box and Rocker Shaft Cap Nut Kit 1966-1983 Harley-Davidson Shovelhead - Chrome Plated
2 reviews $52.87

Colony #3043-18 Jiffy Stand and Foot Clutch Lever 1936-1978 Harley-Davidson Big Twins - Parkerized
$26.40

Colony #9619-18 Jiffy Stand & Foot Clutch Lever Bracket Mounting Kit 1936-1978 Harley-Davidson Big Twin - Parkerized
2 reviews $26.40

Colony #8763-20 Primary Cover Allen Head Screw Kit 1980-1984 Harley-Davidson Shovelhead/Evo 5 Speed - Chrome Plated
1 review $26.40

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

Colony #8165-19 Upper And Lower Motor Mount Kit 1936-1969 Harley-Davidson Big Twin OHV - CAD Plated
3 reviews $52.45

Cometic Gasket Inc. Cam Change Gasket Kit - 1970-92 Harley-Davidson Big Twin
$26.20

Colony #3045-14 Inner Primary Chain Guard Kit 1936-1954 Harley-Davidson Big Twins - Parkerized
1 review $26.08

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 #3744-1 Stem Crown Nut Kit 1936-1948 Harley-Davidson Big Twin Springer
$51.70

Colony #8135-34 Motor Case Kit Stock 1948-1964 Harley-Davidson Panhead - CAD Plated
2 reviews $51.70

Cycle Standard Fork Neck Cup Dust Shield Set for Harley-Davidson Big Twins OEM #43865-48A
17 reviews $10.24

Colony #2288-1 Sprocket Shaft Nut 1972-1985 Harley-Davidson Big Twins - Parkerized
1 review $17.05

Colony #8754-2 Generator Allen Screw Kit 1958-1969 Harley-Davidson Panhead/Shovelhead - Chrome Plated
1 review $12.74

Colony #3240-4 Front Fender Lamp Gasket and Screw Set 1935 - 1948 Harley-Davidson Springers — Colony #3240-4 Front Fender Lamp Gasket & Screw Set 1935-1948 Harley-Davidson Springers
$16.94

Colony 8749-12 Transmission Top Cover Allen Screw Kit 1965-1978 Harley-Davidson Big Twin - CAD Plated
1 review $25.41

Colony #2638-8 Rear Master Cylinder Mounting Kit 1987-1999 Harley-Davidson Softail - Zinc Plated
9 reviews $16.94

Colony #2601-2 Brake Caliper Bleed Screws 1983-2004 Harley-Davidson Big Twin 1983-2003 XL - Zinc Plated
6 reviews $8.47

Colony #2700-1 Linkert High Speed Needle 1950-65 Harley Davidson FL — Colony #2700-1 Linkert High Speed Needle 1950-1965 Harley-Davidson FL - CAD Plated
1 review $25.30

Colony #2695-5 Linkert Low Speed Needle Valve 3-1/2 inch 1948-1965 Harley-Davidson Type 1 Heads
$25.30

Colony #2466-5 Oversized Brake Drum Wheel Mounting Bolt Set - 1936-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead - Parkerized
2 reviews $25.30

Colony #8872-1 Fork Tube Cap/Bolt 1960-1977 Harley-Davidson OEM #45754-60 - Zinc Plated
$16.73

#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 #3027-20 Upper Pushrod Covers Kit 1940-1947 Harley-Davidson Knucklehead - Parkerized
$50.08

Colony #8602-20 Oversize Stroker Upper Pushrod Cover Kit 1940-1947 Harley-Davidson Knucklehead & All Shovelhead - Chrome Plated
1 review $50.08

Colony #7507-20 Upper Pushrod Cover Kit 1957-1985 Sportster 1948-1965 Panhead - Chrome Plated
3 reviews $50.08

Unity Manufacturing Clutch Lockup Tool - BDL Clutches
$50.00

Colony #9724-30 Primary Cover Screw Kit 1936-1964 Harley-Davidson Big Twin - Parkerized
2 reviews $25.00

Colony #8923-8 Handlebar Throttle Spark Roller & Pin Kit 1910-1948 Harley-Davidson All Models
1 review $25.00

Colony #3633-2 Footpeg Rubbers 1952-1990 Harley-Davidson K/KH/XL 1971-1991 FX
$24.99

Gasbox Exhaust Clamp 4 Piece Set 1947 - 1957 Harley-Davidson Panhead - Parkerized OEM #47-57 CL HDW
1 review $49.95

Colony #2880-3 Carburetor Float Valve and Seat 1933-1965 Harley-Davidson Linkert Carburetors
$24.75

Colony #2491-1 Battery Light Wire Clip 1930-1948 Harley-Davidson Big Twin - Parkerized
$16.50

Lowbrow Customs Radius Breather Bolts for Harley-Davidson Twin Cam - Black ED
16 reviews $49.49

Colony #9928-20-P Motor Mounting Smooth Allen Kit 1988-2006 Harley-Davidson FLT/FLHT/FXR/FXRS - Chrome Plated
$49.25

Colony #8919-19-P Primary Cover Smooth Allen Kit 1989-2006 Harley-Davidson Softail 1991-2005 Dyna - Chrome Plated
2 reviews $48.73

Colony #8226-1 Fork Tube Cap/Plug 1948-1977 Harley-Davidson Hydra-Glide - Chrome Plated
$24.26

Colony #7411-2 Sprocket Shaft Seal Assembly Replaces 1936-1954 Harley-Davidson Big Twins
1 review $24.26

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

Cycle Standard Throttle Idle Cable OEM #55355-92 Harley Dyna 1992-1995
2 reviews $24.11

Colony #3785-1 Inner Primary Cover Reinforcement Ring 1936-1954 Harley-Davidson Knucklehead/Panhead
$24.00

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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