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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Lowbrow Customs T-Bars Handlebars - 12 Inch Rise - 1 inch Diameter - Black
1 review $137.28

Drag Specialties Steel Clutch Plate Kit - 1968 - 1984 Shovelhead
12 reviews $39.09

Cycle Standard 41MM Chrome Fork Tubes 1949-1976 Harley-Davidson FL - 22 inch - 2 Over
1 review $180.52

Lowbrow Customs Premium 39mm Chrome Fork Seal Covers - Chrome - Harley-Davidson OEM #46002-87
3 reviews $38.59

Lowbrow Customs Belt To Chain Conversion Kit 1984-1994 Harley-Davidson Softail - Black Sprocket
$179.99

Prism Supply Co. Harley Jockey Shifter Kit - 5 & 6 Speed Big Twin - Stainless Steel
14 reviews $89.99

Prism Supply Co. Jockey Shifter for Harley-Davidson Big Twin - Short Arm
6 reviews $89.99

Fast Eddy Co. No. 21 Wrist Pin Bushing Installer / Remover
15 reviews $89.95

Cycle Electric Generator DGV-5000-L-BLK 12 Volt - Low Voltage - 1965-84 Harley-Davidson - Blacked Out
2 reviews $535.58 $573.32

Cycle Electric Generator DGV-5000-BLK 12 Volt - 1965-1984 Harley-Davidson - Blacked Out
2 reviews $535.58 $573.32

James Gaskets Fork Seal Rebuild Kit 1975-1984 35mm Harley-Davidson FX and XL Models
6 reviews $22.19

Cycle Electric Alternator Kit CE-73TR 2001-2006 Harley-Davidson Softail Models
$531.12 $568.54

Lowbrow Customs Pursuit Foot Peg Set - Black
25 reviews $88.05 $107.11

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

Cycle Standard 5-1/2 inch Pullback Handlebar Riser Set - Chrome
$86.58

Cycle Standard Laydown License Plate Mount - Black - Bolt-on Fitment for 1955 - 2018 Harley-Davidson
22 reviews $39.65

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

Airspeed Cycles Pullback T-Bar Handlebars - 8 inch Rise - 1 inch - Stainless Steel
$255.00

Cycle Standard Ride-On Engine Stablizer Link Kit 1982-94 Harley-Davidson FXR 91-94 Dyna 80-08 Touring
$101.87

Choppahead Aluminum Oil Tank With Finned Ends - Raw Finish - for Harley-Davidson Choppers
4 reviews $253.79

Fork Co., Ltd Sixties Narrow Handlebars - Stainless Steel
3 reviews $251.94

Gasbox S&S Carburetor Support Bracket - 1985-1999 Harley-Davidson Evolution Big Twin
27 reviews $27.99

Dynatek Performance Electronics 3 Ohm Dual Output HD - For Use With Dyna Electronic Ignitions
3 reviews $125.54

Autolite Spark Plug- Harley Davidson Sportster / Twin Cam Models - Manufacturer Part #4164
21 reviews $7.70

Prism Supply Co. Sling Shot Hydraulic Brake Pedal Kit - Harley-Davidson Generator Engine - Stainless Steel
$249.99

Fast Eddy Co. No. 20 Pinion Gear Locking Tool 1954-1999 Harley Big Twins
7 reviews $99.95

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

3 $165.56 $183.95

Performance Machine Classic 5 Spoke One-Piece Brake Rotor - 11.5 inch - Front
$164.95

Fast Eddy Co. No. 31 Neck Bearing Race Remover / Installer
6 reviews $54.95

V-Twin Manufacturing Foot Clutch Release Arm 1936-1964 Harley-Davidson Big Twin OEM# 3705136
$41.15

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

Lowbrow Customs 39mm Fork Shrouds - Black - 1987-Up - Harley-Davidson Sportsters
53 reviews $122.76

Hugh's Handbuilt HHB Harley Davidson Sprocket Lock System - Raw Silver (Tumbled Finish)
$69.89

Cycle Standard 1.7 inch Rise Forged Aluminum Handlebar Risers for Harley-Davidson - Chrome
10 reviews $60.72

PanheadEric Precision Stainless Steel Rear Chain Adjuster Screws 1936-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead
$40.00

Gasbox Panhead Exhaust Pipe Set 1958-1964 Harley-Davidson Swingarm FL FLH 74 ci - Bare Steel
1 review $239.95

Cycle Electric Alternator Kit CE-61AR for 1980-1988 Harley-Davidson FLH/FLT/FXR With 5 Speed Rubber Mount Motors
1 review $476.96 $510.57

Cycle Standard 1936-1986 Harley-Davidson Big Twin 4 Speed Kickstarter Rebuild Kit
2 reviews $118.75

Airspeed Cycles T-Bar Handlebars - 10 inch Rise - 1 inch - Stainless Steel
2 reviews $235.00

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

Cycle Standard Chrome 12V Square Coil 1948-60 Harley-Davidson Big Twins
$116.75

Clymer Manuals 1966 - 1984 Harley Davidson Shovelhead Manual
15 reviews $54.95

Prism Supply Co. Darlington Air Cleaner - CV Carburetor - Polished
$229.99

Cycle Standard Fork Neck Cup Dust Shield Set for Harley-Davidson Big Twins OEM #43865-48A
17 reviews $9.31

Progressive Suspension 412 Series 13.5" Shocks Chrome With Full Covers 1958-1972 Harley-Davidson FL/FLH
1 review $454.95

Cycle Standard Fork Neck Cup Set 1948-1986 Harley-Davidson Big Twin OEM #48311-60
4 reviews $45.45

Cycle Standard 11" Chrome Shocks With Chrome Spring - 1 inch Under - 1973-1984 Harley-Davidson FX/FXE 1972-1984 FL
$227.10

Andrews A2 Camshaft - L1977-1984 Harley-Davidson Shovelhead
1 review $226.76 $251.95

Cannonball Extended Crossover Shaft For Use With Stealthstarter Electric Starter Kit Rigid Frame 4 Speed Harley-Davidson Big Twins
$90.61

Cycle Electric Alternator Kit CE-67TR 1999-2003 Harley-Davidson FXD Dyna - Upgrade to 3 Phase
$451.28 $483.08

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

Cycle Standard Rocker Oil Lines - Chrome - 1966-84 Harley-Davidson Shovelhead
$32.16

9 Finger Fabrication Engine Case Bore Plug Set - Harley-Davidson Evolution/Shovelhead/Sportster
5 reviews $45.00

Burly Brand Narrow Bottom Ape Hanger Handlebars - 1 inch - 12 inch Rise - Black

$148.46 $164.95

Lowbrow Customs Belt to Chain Conversion Kit Harley Davidson Dyna Twin Cam 2006-2017 - Silver Sprocket
3 reviews $222.49 $259.99

Old-Stf Cycle Pushrod Cover Keeper Set - Drilled Brass - Big Twin Evo Shovelheads & Knuckles
19 reviews $40.00

Lowbrow Customs 39mm Solid Riser Bushings for Harley-Davidson - Black
22 reviews $33.62

Cycle Standard Bendix Zenith Carburetor Rebuild Kit with Viton Needle OEM #27132-71
12 reviews $29.05

Cycle Standard Chrome 12V Coil 1947 & Up Harley-Davidson
6 reviews $61.87

LePera Cobra Seat - Smooth - fits 1984-1999 Harley-Davidson Softail
1 review $433.00

Cycle Standard 5-1/2 inch Forged Aluminum Handlebar Risers - Chrome
$86.58

Drag Specialties AGM Maintenance Free Battery 2000-Up Harley-Davidson Softails 99-17 FXD/FXDWG/FLD
3 reviews $107.94

Drag Specialties Replacement Starter - 1990-2006 Harley-Davidson Big Twin/Twin Cam - Black
1 review $426.48

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

Hawg Supply Carburetor Support Bracket for Harley-Davidson Ironheads and Shovelheads with Fuel Filter
$84.99

Drag Specialties Predator III 2-Up Seat - Double Diamond - 1984-99 Harley-Davidson FXST/FLST
$424.95

Lowbrow Customs Belt to Chain Conversion Kit 2000-2005 Harley-Davidson Dyna Spoked Wheels - Chrome Sprocket
1 review $212.43

Drag Specialties Neck Post Bearing and Race Set 1980-13 Harley-Davidson FLT/FLHT 99-13 FLTR/FLHR 60-86 FL/FX/FXWG 84-17 FXST/FLST 99-17 Dyna 82-21 XL
$30.11

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

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

Cycle Standard 2 Position Ignition Key Switch Replaces Harley-Davidson OEM #71428-90A
20 reviews $38.20

Cycle Electric Generator DGV-2578 6 Volt for 1958-1964 Harley-Davidsons with 5/16-24 mounting bolts
$420.00 $449.60

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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