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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Progressive Suspension 412 Series 11" Shocks Chrome With Full Covers 1973-1986 Harley-Davidson Shovelheads
$454.95

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

Andrews N4 Camshafts - 2000-Up Harley-Davidson Sportster XL 2000-02 Buell
$454.46 $504.95

Andrews N2 Camshafts - 1991-1999 Harley-Davidson Sportster XL 1994-99 Buell
$454.46 $504.95

Gasbox Coil and Ignition Switch Universal Mount - Harley Davidson Big Twin 1948-1984
17 reviews $34.95

Cycle Standard 12" Black Shocks With Black Spring - Stock Length - 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

Andrews EV27 Camshaft - 1984-1999 Harley-Davidson Big Twin
$226.76 $251.95

V-Twin Manufacturing Forged Floorboard Tab Set for 1 inch Tubing
$56.57

Colony #1010 Complete Show Bike Kit Allen Hardware 1978-1984 Harley-Davidson Shovelhead - Chrome Plated
2 reviews $150.65

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

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

Blue Streak High-Performance Points & Condenser Kit for 1970-1979 Harley-Davidson
8 reviews $29.95

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

Bates S&S Super E/G Carburetor Adapter for Bendix Style Oval Harley Air Cleaners
10 reviews $149.22

Drag Specialties High Performance Starter Solenoid 1965-1984 Harley-Davidson Big Twin 4 Speed 1967-1980 XL 1984-1988FXST/FLST 1985-1986 FXWG/FXSB
2 reviews $88.58

Lowbrow Customs Fish Scale Master Cylinder Cover - 1982 - 2005 Harley-Davidson #45004-85
18 reviews $29.40

Cycle Standard Exhaust Port Gasket 1984-2024 Harley-Davidson Big Twins 1986-2022 XL OEM# 65324-83 - 2 Pack
$16.95

Colony #2012-8 Head Bolt Set 12 Point 1992-Up Harley-Davidson Big Twin 1993-Up XL - Chrome Plated
5 reviews $109.99

Fast Eddy Co. No. 49 Neck Cup Removers
5 reviews $54.95

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

Autolite Spark Plug- 1975-1981 Shovelhead & Evo Big Twins - Manufacturer Part #4265
14 reviews $7.70

Cycle Standard Nose Cone Cam Gear Cover - Chrome - 1993-99 Harley-Davidson Big Twin
3 reviews $145.81

Arlen Ness Big Sucker Stage 1 Air Filter Kit - Black - 1999-2017 Harley-Davidson Twin Cam
2 reviews $215.96 $239.95

Gasbox Shovelhead Exhaust Pipe Set 2-into-1 for 1970-84 Harley Cone - Bare Steel OEM #65435-70
27 reviews $214.99

Cycle Standard Ignition Advance Unit - Stainless Steel - 1970-Up Harley-Davidson OEM #3251770T
1 review $53.39

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

Cycle Standard Super Nut for Harley-Davidson Four Speed Transmission - OEM #35211-36
26 reviews $30.16

LCFabrications Clutch Switch Pod Delete - Black - for H-D
28 reviews $35.00

K&N Air Filters Oil Filter - Chrome - Harley-Davidson Evolution Big Twin Harley and Sportster Models - K&N Part #KN-170C
6 reviews $19.99

Gasbox Open Belt Drive Primary License Plate Mount for Harley - Vertical or Horizontal
3 reviews $69.95

Hugh's Handbuilt HHB Harley Davidson Sprocket Lock System - Black Anodized
1 review $69.89

Cycle Standard Screw-In Harley Stock Style Vented Gas Cap - 1996 & up - Black
63 reviews $20.61

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

Drag Specialties Forward Control Kit With Pegs 1982-1994 & 1999-2000 Harley-Davidson FXR Models
$407.83

Lowbrow Customs T-Bars Handlebars - 8 inch Rise - 1" Diameter - Black
11 reviews From $134.98

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Left Hand Outlet
24 reviews $36.69

Lowbrow Customs Speedometer Gauge Riser Mount for 1 inch T-Bar Handlebars - Polished
20 reviews $100.89

Colony #8164-19 Upper And Lower Motor Mount Kit 1936-1969 Harley-Davidson Big Twin OHV - Chrome Plated
5 reviews $57.53

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

Colony #7911 Complete Show Bike Kit Acorn Hardware 1978-1984 Harley-Davidson Shovelhead - Chrome Plated
2 reviews $400.47

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

Lowbrow Customs Belt to Chain Conversion Kit Harley-Davidson Dyna 2000-05 Spoked Wheels - Black Sprocket
4 reviews $199.99

Drag Specialties Clutch Cable OEM #38618-68C Harley-Davidson 4 Speed Big Twin 1968-1986 - 60" Long
$65.87

Gasbox Upswept Exhaust Pipe Set for 1948-1965 Harley-Davidson Panhead Rigid Applications
$389.95

Samwel Supplies OEM Style Inline Springer Fork Clamp - Black
3 reviews $194.80

Colony #8307 CHR Complete Stock Hardware Kit - 1966-1969 Harley-Davidson Shovelhead - Chrome Plated
$387.28

Lowbrow Customs Throttle Housing 1996 & up Harley Push-In Dual Cable - Brass - 1 inch
5 reviews $128.53

LCFabrications Brake Switch Pod Delete - Black - for H-D
28 reviews $35.00

Colony #8515 Complete Show Bike Kit Cap Style Hardware 1976-1977 Harley-Davidson Shovelhead - Chrome Plated
$383.08

Cycle Standard 41MM Chrome Fork Tubes 1949-1976 Harley-Davidson FL - 24 inch - 4 Over
1 review $191.14

Cycle Standard Drilled Stainless Steel Brake Rotor - 11.5 inches - Rear - Replaces Harley-Davidson OEM #41789-92
$95.46

Lowbrow Customs Harley-Davidson Crankshaft Turning / Rotating Tool - 1954 - 2005 Big Twin
9 reviews $34.67

Lowbrow Customs Rogue Rear Fender Strut Set 1958 - 1984 Harley-Davidson Panhead Shovelhead
17 reviews $95.21

Cycle Standard Chrome Rear Axle Kit 1980-2001 Harley-Davidson FL FLH FLT 82-94 FXR 86-06 FLST
2 reviews $62.99

Gasbox Front Exhaust Pipe 1966-1969 Harley-Davidson Shovelhead - Chrome - OEM #65443-66
2 reviews $75.00

Colony #2548-8 Clutch Hub Nut Kit 1941-1984 Harley-Davidson Big Twin - Parkerized
16 reviews $25.00

Fork Co., Ltd Riser Clamp for Fork Sixties Narrow Bars - Single Clamp - Polished
$374.94

Lowbrow Customs Pursuit Shifter Peg for Harleys - Solid Brass
40 reviews $53.56

Fast Eddy Co. No. 22 Engine Rotation Socket - 10 Spline for 1955-2006 Harley-Davidson Big Twin
4 reviews $74.95

James Gaskets Exhaust Port Gasket Kit - Thick Graphite Wire Gaskets & Hex Nuts - 1984-Up Harley-Davidson Evo/Twin Cam 1986-2022 XL
$24.95

Cycle Standard 41mm Fork Leg Assembly Rebuild Kit 1986-2013 Harley-Davidson FLT/FLHT/FLHX/FLTR 1999-2013 FLHR 1984-2010 FXST 1986-1998 FLST 2000-2017 FLS/FLST 1984-1986 FXWG 1993-2005 FXDWG
$74.21

Cycle Standard 6 Post Ignition Key Switch Replaces Harley-Davidson OEM #71501-73A - Chrome Bezel
12 reviews $46.16

Cycle Standard Mesh Air Cleaner - Black - Harley-Davidson CV Carb Sportster and Big Twin
28 reviews $92.20

Lowbrow Customs Lowbrow Customs Spark Plug Wire Set 1982-1994 Harley FXR and Gasbox Ironhead & Big Twin Top Motor Mounts
$22.99

Cycle Standard Flat Points Cover OEM #32588-70A for Harley-Davdison 1970 & Up XL 1970 - 1999 Big Twin
4 reviews $9.88

Dynatek Performance Electronics Twin Fire II Single Fire Miniature 3 Ohm Coil
1 review $182.21

Cycle Standard Oil Temperature Dipstick OEM #62635-79 Harley-Davidson 1970-84 Big Twin 1984-94 FXR 1987-92 FLT 1970-78 XL
12 reviews $33.06

Cycle Electric Alternator Kit 32 amp CE-32AL - 1988-1999 Harley-Davidson Softail
$367.45 $393.34

Gasbox Exhaust Squish Pipe 1936-1964 Harley-Davidson Big Twins
$72.50

Cycle Electric Alternator Kit CE-22AR for 1970-1988 Harley-Davidson Big Twins
$362.34 $387.87

Colony #8314 CHR Complete Stock Hardware Kit - 1981-1984 Harley-Davidson Shovelhead - Chrome Plated
1 review $361.58

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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