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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The Speed Merchant 39 mm Fork Preload Adjuster - Gold Finish
$152.96 $169.95

The Speed Merchant 39 mm Fork Preload Adjuster - Black Anodized Finish
$152.96 $169.95

Colony #9629-2 Rear Chain Adjusters - 1936-1972 Harley-Davidsons Knucklehead/Panhead/Shovelhead - Parkerized
4 reviews $15.29

Drag Specialties Clutch Cable OEM #38606-87A Harley-Davidson FXST 1987-1999 +6 inch Extended
$76.17

Cycle Standard Throttle Idle Cable OEM #56355-96A Harley Dyna 1996-2008 - Blacked Out
2 reviews $25.35 $36.21

Lowbrow Customs Motor Company Aluminum Shifter Peg for Harleys
22 reviews $18.89

Cycle Standard Black 6V Square Coil 1948-60 Harley-Davidson Big Twins
$75.53

Unity Manufacturing Splined Motor Turning Tool - 1954-1999 Harley-Davidson Big Twins
$25.00

Fast Eddy Co. No. 10 Transmission Socket 2-1/4" for 2007 & later Harley Big Twins
7 reviews $149.95

Gasbox Strong Arm Top Engine Mount For Early Big Twin Engines In Gasbox Frames
$74.95

Fast Eddy Co. No. 24 Engine Rotation Socket - 24 Spline for 2007-Up Harley-Davidson Big Twin
$74.95

Colony #2658-5 Carburetor Throttle Lever Wire Block All Harley-Davidson Linkert & Bendix Carburetors - CAD Plated
$13.62

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

Drag Specialties Breaker Plate Assembly 1970-1999 Harley Davidson Big Twin 1971-2003 XL Points Ignition (Except Single Fire Ignition)
$24.91

Cycle Standard 41mm Fork Seal Rebuild Kit - 1984-2013 Harley-Davidson FLT 1984-86 FXWG 1984-17 Softail 2012-16 FLD
1 review $18.67

Drag Specialties Points & Condenser Kit 1948-1969 Harley-Davidson Big Twin 1957-1970 XL
$16.59

James Gaskets Wheel Bearing Oil Seals for Big Twin and XL Models - Front or Rear Wheel
18 reviews $6.49

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

Burly Brand Narrow Bottom Ape Hanger Handlebars - 1 inch - 14 inch Rise - Black

$148.46 $164.95

Cycle Standard Brake Pedal Pad 1965-Up Harley-Davidson FL OEM #36956-65TA
$24.28

Lowbrow Customs Bottom Mount Headlight Bracket Harley-Davidson Springers 1936 - 1949
2 reviews $48.55

Colony #8716-1 Fork Tube Plug 1978-Up Harley-Davidson Wide Glide - Chrome Plated
$24.26

Forever The Chaos Life FTCL KiCK FLiP Kicker Pedal For Harley-Davidson Motorcycles
$145.00

Cycle Standard Bayonet / Cam Harley Style Vented 2" Gas Cap - Black
33 reviews $18.04

Cycle Standard Throttle Cable OEM #56356-96A Harley Dyna 1996-2008 +4 inch Extended
$36.03

Cycle Standard HD Factory Style Grips - Black 1 inch OEM #56206-81A
21 reviews $18.01

The Speed Merchant 39 mm Fork Preload Adjuster - Raw Machined Finish
$143.96 $159.95

Colony #8618-20 Big Bore Headbolt & Washer Kit 1949-Up Harley-Davidson Panhead/Shovelhead - Black
4 reviews $47.80

Gigacycle Garage Gigacycle Garage Locking Push-In Oil Cap
$71.43

Colony #2322-11 Rocker Arm Cover Stud Kit 1966-1984 Harley-Davidson Shovelhead
4 reviews $47.38

Drag Specialties Clutch Cable OEM #38606-87A Harley-Davidson FXST 1987-1999
$71.02

James Gaskets Fork Seal 49MM Rebuild Kit 2006-Up Harley-Davidson FXD/FLD
4 reviews $28.29

Cycle Standard 22mm Petcock Round Body Chrome Harley-Davidson Style - Left Side Position
18 reviews $70.23

Cycle Standard Kickstand Spring 1985-2006 Harley-Davidson Softail / 1991 & Up Touring / 1991 & Up Sportster Models - Black - OEM #50005-85A
42 reviews $8.26

Cycle Standard Replacement Dished Sprocket - Chrome - 47 Tooth - 1973-1985 Harley-Davidson Big Twin 1979-81 XL
$70.14

Colony #2921-2 Spring Retainer & Acorn Nut Set 1936-1948 Harley-Davidson Big Twin Springers 1936-1952 45s 1953-1954 Servi-car - Chrome Plated
2 reviews $23.38

Unity Manufacturing Hydraulic Pushrod Wrench Set
3 reviews $35.00

Motone Billet Bayonet / Cam Harley Style Vented Gas Cap - Black
$34.99

Gasbox Axle Plate License Plate Bracket for 1936 - 1957 Harley-Davidson Big Twin Rigid Frames
4 reviews $69.95

Cycle Electric Regulator CE-102 - 1965-77 Harley-Davidson XL XLH XLCH 1965-69 FL FLH
10 reviews $140.51 $150.41

Lowbrow Customs Lowbrow Customs Spark Plug Wire Set 1986-2003 Harley-Davidson XL 1980-1989 FLH/FLT
$22.99

Mooneyes Finned Points Cover for Harley-Davdison 1999 & Up Twin Cam
4 reviews $67.67

Colony #3604-52 Horn Mounting Kit 1931-1936 Harley-Davidson VL 1931-1939 RL
$135.00

Prism Supply Co. 3/4"-18 Petcock Fits Early Style Harley-Davidson Tanks - Stainless Steel
$134.99

Lowbrow Customs Radius Breather Bolts for Harley-Davidson Twin Cam - Black ED
15 reviews $44.99

Lowbrow Customs Radius Breather Bolts for Harley-Davidson Twin Cam - Chrome Plated
19 reviews $44.99

Drag Specialties Replacement Floorboards Harley-Davidson FL FLST
$134.88

Colony #2094-4 Handlebar Riser Allen Bolt Kit 1/2-13 x 2-1/2" Harley-Davidson FLST Models - Chrome Plated
5 reviews $14.89

Drag Specialties 4-1/2 inch Pullback Handlebar Riser Set - Black
$133.85

Lowbrow Customs Inline Springer Fork Handlebar Fabricator Top Clamp - Raw Steel
3 reviews $133.84

James Gaskets Fork Seal Rebuild Kit 1984-2017 Harley-Davidson FL FX
2 reviews $22.20

Drag Specialties Shifter Linkage - Chrome - 1986-2017 Harley-Davidson FLS/_FXST/_FXS/_FLST
$44.24

Cycle Electric Shim Kit CE-8120 for CE-32A Alternators on Harley-Davidsons
2 reviews $22.06 $23.62

Cannonball Transmission Base Plate 1936-1985 4 Speed Harley-Davidson Big Twins
$132.13

Colony #3000-2 Springer Spring Rod Bushings 1931-1945 Harley-Davidson Big Twin Springers - Parkerized
1 review $43.82

Colony #7706-2 Springer Spring Rod Bushings Harley-Davidson 45's And 1931-1945 Big Twin Springers
2 reviews $43.82

Cycle Standard Transmission Mounting Plate 1986-1999 Harley-Davidson Softail - Black
$32.76

Gasbox Wideglide Headlight Mount 1948 - 1985 Harley-Davidson FLH - Tumbled Stainless
7 reviews $25.95

Cycle Standard Throttle Cable OEM #56356-96A Harley Dyna 1996-2008 - Blacked Out
1 review $25.87 $36.96

Lowbrow Customs Throttle Housing 1981-1995 Harley Thread-In Single Cable - Brass - 1 inch
5 reviews $128.53

Lowbrow Customs FiltroMax Big Twin Bracket - Black
3 reviews $35.86

Colony #8856-8 Cylinder Base Stud Set 1930-1977 Harley-Davidson Big Twins OEM #16831-30
3 reviews $31.87

Colony #9637-13 Transmission Kicker Cover Stud Kit 1936-1984 Harley-Davidson Big Twin - Parkerized
3 reviews $25.00

Lowbrow Customs Bottom Mount Headlight Bracket - Harley Narrow Glide, Triumph, BSA - Tumbled Stainless
7 reviews $41.60

Cycle Standard Clutch Cable OEM #38602-92 Harley Dyna 1992-2005 - Blacked Out
$41.41 $59.15

Colony #8216-18 Head Bolt Kit 1940-1947 Harley-Davidson Alloy Flathead 74 & 80 - Chrome Plated
$123.48

Colony #9005-4 Throttle Cable Bracket 1936-1948 Harley-Davidson OHV Big Twin - Parkerized
2 reviews $17.60

Cycle Standard Bayonet / Cam Harley Style Vented 2.5" Gas Cap - Gloss Black
7 reviews $30.64

Colony #2425-2 Clutch Pushrod Adjusting Screw Locknut 1941-1984 Harley-Davidson Big Twin - Parkerized
1 review $15.31

Cycle Standard Handlebar Clamp - Smooth - Chrome
$24.48

Colony #8222-8 Rocker Shaft End Plug & Cap Kit 1966-1970 Harley-Davidson Shovelhead 1957-1970 XL - Chrome Plated
2 reviews $40.61

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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