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 #8873-18 Saddle to Seat Tree Mounting Kit 1934-1980 Harley-Davidson Models (Except FX/XL) - CAD Plated
1 review $35.00

Prism Supply Co. Ratchet Top Shifter Plate - Stainless Steel
$34.99

Drag Specialties Single Gauge Bracket - Chrome - 1995-2011 Harley-Davidson XL883 1995-2005 FXD Models
$104.89

Fast Eddy Co. No. 7 Connecting Rod Alignment Tool 1936-99 Harley Big Twins & All Sportsters
$34.95

Cycle Standard Headlight Visor - 5-3/4" Headlight - Chrome - Replaces OEM #69738-05
1 review $52.35

Colony #7811-14 Inner Primary Mounting Kit - 1936-1954 Harley-Davidson Knucklehead/Panhead
1 review $26.08

Colony #8931-16 Rocker Cover Allen Head Screw Kit 1985-Up Harley-Davidson FL/FX 1986-Up XL - Chrome Plated
3 reviews $20.85

Cycle Standard Drilled Black Brake & Clutch Lever Set for Harley 96-03 Sportster and 96-06 Big Twins
24 reviews $51.80

Cycle Standard Master Cylinder Gasket Harley-Davidson OEM #45012-72
14 reviews $6.09

Colony #3561-1 Stem Crown Nut 1939-1948 Harley-Davidson Big Twin Springer - Parkerized
$51.70

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

Drag Specialties Breaker Plate Assembly 1970-1999 Harley Davidson Big Twin 1971-2003 XL Points Ignition (Except Single Fire Ignition)
$17.12

Drag Specialties Points & Condenser Kit 1948-1969 Harley-Davidson Big Twin 1957-1970 XL
$17.07

Colony #8603-8 Adjustable Pushrod & Solid Lifter Kit 1984-Up Harley-Davidson Evo
2 reviews $102.11

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

Colony #8909-13-P Transmission Side Cover Smooth Allen Kit 1987-2006 Harley-Davidson FX/FL/Softail 1991-2005 Dyna - Chrome Plated
$33.84

Colony #3167-4 Shock Mount Bolt Kit 1984-99 Harley Davidson Softail — Colony #3167-4 Shock Mount Bolt Kit 1984-1999 Harley-Davidson Softail - Zinc Plated
4 reviews $25.30

Colony #2867-1 Rear Axle Spacer 1936-1957 Harley-Davidson Big Twins - Chrome Plated
$25.30

Lowbrow Customs Lowbrow Customs Spark Plug Wire Set 1989-1999 Harley-Davidson FXST/FLST 1991-1998 FXD
1 review $25.29

Cycle Standard 5 Post Ignition Key Switch Replaces Harley-Davidson OEM #71500-36T - Chrome Bezel
7 reviews $50.55

Unity Manufacturing Clutch Lockup Tool - 1990-1997 Harley-Davidson Big Twin 1991-2022 XL
$50.00

Colony #3144-13 Transmission Kicker Cover Stud Kit 1936-84 Harley Davidson Big twins — Colony #3144-13 Transmission Kicker Cover Stud Kit 1936-1984 Harley-Davidson Big Twins - CAD Plated
3 reviews $25.00

Colony #7708-1 Bronze Seat Post 1936-1957 Harley-Davidson Big Twins
4 reviews $24.98

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

Lowbrow Customs Slick Bungee Nuts - 3/8"-16
2 reviews $16.60

Colony #8762-17-P Primary Cover Smooth Allen Screw Kit 1971-Up Shovelhead/Evo 4 Speed - Chrome Plated
$33.17

Cycle Standard Oil Filter for Harley-Davidson Dyna Softail and Touring Models - Chrome - OEM #63798-99A 63731-99
8 reviews $14.19

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

Colony #9927-28 Upper & Lower Motor Mounting Allen Kit 1984-1999 Harley-Davidson Softail - Chrome Plated
$49.25

Colony #9854-28 Upper & Lower Motor Mount Kit 1984-1999 Harley-Davidson Softail - Chrome Plated
2 reviews $49.25

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

LCFabrications Riser Adapter for Integrated Top Triple Tree
$49.00

Colony #8623-2 Seat Clevis Pin & Spring 1929-Up Harley-Davidson
5 reviews $13.94

Colony #2230-6 Intake Manifold Nipple Repair Kit 1948-1954 Harley-Davidson OHV - CAD Plated
2 reviews $24.37

Colony #3194-1 Harley Primary Drain Plug - Zinc Plated - Big Twin & Softail - 1987-2003 & 1993-2003
16 reviews $9.68

Cycle Standard Throttle Cable OEM #56356-92 Harley Dyna 1992-1995
2 reviews $24.10

Saddlemen 1/4 inch -20 Seat Mount Knob - Black
6 reviews $8.00

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

Dandlebars Feeler Gauges for 1930-1984 Harley-Davidsons
2 reviews $31.66

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

Colony #3693-20 Rear Fender Rail Screw Kit 1972-1986 Harley-Davidson FX - Chrome Plated
1 review $23.65

Lowbrow Customs Air Cleaner Backplate Gasket for CV Carburetor
28 reviews $2.22

Lowbrow Customs 60 psi Oil Pressure Gauge - White Face
24 reviews $46.49

Colony #7502-2 Oversize Drain Plug & Tap Kit 1965-Up Harley-Davidson Big Twins 1967-Up Sportster - Chrome Plated
2 reviews $46.35

Cycle Standard Battery Hold Down Rod - Chrome - Early Harley-Davidson 6 Volt Big Twins
3 reviews $18.44

Colony #7410-1 Sprocket Shaft Bearing Retainer with Lip Seal Standard Size Replaces 1955-1968 Harley-Davidson 74's
7 reviews $45.98

Cannonball Custom Transmission Adjuster Custom for Cannonball Transmission Base Plate 1936-1985 4 Speed Harley-Davidson Big Twins
$91.46

Drag Specialties Shifter Linkage - Chrome - 1986-2017 Harley-Davidson FLS/_FXST/_FXS/_FLST
$45.53

Cycle Standard Fly By Wire Throttle Tube - 1 inch - Black
26 reviews $12.97

Hawthorn Co. Cycles Battery Box Antigravity 12 Cell w/ Breaker Mount
$90.00

Martian Machine Heart Cast Aluminum Points Cover - Veritcal
2 reviews $45.00

Gasbox Front Pipe to Frame Clamp Set for 1958 - 1969 Harley-Davidson FL Models - Parkerized - OEM #65513-58, 65512-37A
4 reviews $22.50

Cycle Craft #175 Main Jet - 1988-2006 Keihin CV Carburetor
$5.99

Fast Eddy Co. No. 32 Tappet Block Alignment Screws - 3 Pack - 1/4-20 Thread
12 reviews $29.95

Gasbox Side Mount Headlight Bracket Set for Harley 39mm Narrow Glide Front Forks
5 reviews $29.95

Colony #7119-2 Threaded Cylinder Head to Manifold Nipple With O-ring Seal - 1940-1954 Harley-Davidson OHV 74's 1953-56 K/KH
1 review $22.45

Colony #2123-4 Handlebar Riser Cupped Washers 1973-Up Harley-Davidson All Models - Chrome Plated
3 reviews $14.89

Cycle Standard 35mm Fork Seal Rebuild Kit - Showa Forks - 1984-87 Harley-Davidson XL FX FXR
6 reviews $17.85

Lowbrow Customs Banded Screw-In Gas Cap for Harley-Davidson 1982-1995 / Modern Triumph Bonneville T100 / T120, Scrambler, Thruxton - Brass
7 reviews $89.06

Lowbrow Customs Domed Screw-In Gas Cap for Harley-Davidson 1982-1995 / Modern Triumph Bonneville T100 / T120, Scrambler, Thruxton - Brass
10 reviews $89.06

Lowbrow Customs Banded Screw-In Gas Cap for Harley-Davidson 1996 & later - Brass
38 reviews $89.06

Drag Specialties XLX Style Front Fender 1999-05 Harley-Davidson Dyna 86-Up XL 11-Up 883L/1200C/1200CX 14-20 1200T
2 reviews $88.95

Colony #9912-2 Fork Tube Cap 1978-Up Harley-Davidson FL/FXWG/Softail - Chrome Plated
$22.09

Cycle Standard Front Fender - Harley-Davidson 1973-up XL FX FXR 35mm 39mm Narrow Glide Front Forks - OEM #59031-83
7 reviews $87.92

Gasbox Shovelhead Exhaust Flanges - Mild Steel
12 reviews $21.95

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

Lowbrow Customs Harley-Davidson 45 Flathead Motor Engine Stand
9 reviews $87.62

Colony #9893-18 Gas Tank Mounting Kit 1937-1975 Harley-Davidson Big Twin 1972-1972 FX - Parkerized
3 reviews $17.42

Cycle Standard Inner Shift Lever 1982-Up Harley-Davidson FL Models - Chrome - OEM #33718-82B
$28.57

Gasbox Exhaust Port Clamps 1950 - 1965 Harley-Davidson Panhead - Stainless Steel OEM #65519-48 HDW
5 reviews $28.57

Cycle Standard 41mm Fork Seal Rebuild Kit - 1949-1977 Harley-Davidson FL
$21.37

Colony #7132-12 Aluminum Alloy Tubular Adjustable Pushrods & Lifter Adapters - 1966-1984 Harley-Davidson Shovelhead
1 review $85.45

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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