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 #2939-26 Complete Springer Rocker Rebuild Kit 1931-1948 Harley-Davidson Big Twin - Parkerized
2 reviews $204.20

James Gaskets Motor Gasket Kit W/Alum-Foamet Base 1948-1965 Harley-Davidson Panhead
$101.74

Cycle Standard Engine Stabilizer Link - Chrome - 1995-2017 Harley-Davidson Dyna
$101.74

Colony #8224-8 Rocker Shaft End Plug & Cap Kit 1971-Up Harley-Davidson Shovelhead 1971-1985 XL - Chrome Plated
9 reviews $40.61

Cycle Standard Drilled Stainless Steel Brake Rotor - 10 inches - Replaces Harley-Davidson OEM #44137-77A
2 reviews $100.89

Drag Specialties Wheel Bearings and Races - Replaces Harley-Davidson OEM #9052
3 reviews $28.80

Colony #2349-6 Handlebar Heavy Duty Damper Kit 1973-Up Harley-Davidson Big Twin & Sportster
17 reviews $20.04

Cycle Standard Neck Post Bearing & Race Set - Imported
$14.29

Unity Manufacturing Four Speed Clutch Lockup Tool - Stock
3 reviews $50.00

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

Led Sled Customs Derby Oil Tank for Harley-Davidson Choppers
5 reviews $199.95

Biltwell Thunder Risers - Polished Stainless
7 reviews $199.95

Colony #2886-24 Valve Spring Cover Kit 1937-1938 Harley-Davidson Big Twin Side Valve - CAD Plated
1 review $198.00

Standard Motorcycle Products Ignition Sensor Assembly - 1980-1994 Harley-Davidson XL 1984-1985 FXST 1980-1993 FLT
3 reviews $65.95

Gasbox S&S Carburetor Support Bracket - Harley-Davidson Evo Big Twin and Strokers - Tumbled Stainless
10 reviews $21.95

Gasbox Heavy Duty Coil Mount - Big Twin 1965 - 1982
18 reviews $21.95

Drag Specialties 15A Circuit Breaker 1970-1999 Harley-Davidson Big Twin/XL 1999 Twin Cam
1 review $10.95

Cycle Standard Mini 2:1 ratio Mechanical Speedometer with Trip Meter - 2.4 inch
12 reviews $98.46

Colony #3537-17 Primary Cover Allen Screw Kit 1971-Up Harley-Davidson Shovelhead & Evolution 4 Speed
4 reviews $16.34

Fast Eddy Co. No. 37 Socket Tool for Oil Pump and Tappet Screen Plugs
8 reviews $27.95

Colony #8806-17 Motor Mounting Kit Upper & Lower 1970-1984 Harley-Davidson Big Twin - Chrome Plated
4 reviews $39.11

James Gaskets Exhaust Gasket/Mounting Kit for Harley-Davidson 1984-2013 Big Twins and 1986-2013 XL
16 reviews $24.43

Gasbox Front Exhaust Pipe 1966-1969 Harley-Davidson Shovelhead - Bare Steel - OEM #65443-66
1 review $65.00

Lowbrow Customs Spare Parts Book for 1971-1980 Harley-Davidson FX
22 reviews $48.54

Cycle Standard Throttle Cable OEM #56356-96A Harley Dyna 1996-2008
4 reviews $38.62

Cycle Standard Replacement Front Springer Fork Fender 1993-Up Harley-Davidson FXSTS
$64.31

Cycle Craft #46 Pilot Jet - 1988-2006 Keihin CV Carburetor
3 reviews $5.99

FNA Custom Cycle Carb Arm Support Bracket for Harley-Davidson Ironheads and Shovelheads - Tumbled
$95.00

Cycle Standard Kickstand Spring 1936-1987 Harley-Davidson Big Twins / Pre 1984 Ironhead Sportster Models - Chrome - OEM #50011-30
44 reviews $9.04

S&S Cycle Oil Filter Black '86 & up Sportster and '84 - 99 Big Twin S&S Cycle #31-4101
7 reviews $20.95

#2233-12 Rocker Arm Shaft Washer O-Ring Kit Harley Shovelhead 66-84 — Colony #2233-12 Rocker Arm Shaft Washer O-Ring Kit 1966-1984 Harley-Davidson Shovelhead 1957-1984 XL
23 reviews $6.05

Drag Specialties Small Radius Laydown 3 Bolt Style License Plate Mount Assembly - Chrome
$93.61

Cycle Standard Exhaust Port Gasket 1984-2024 Harley-Davidson Big Twins 1986-2022 XL OEM# 65324-83 - 2 Pack
$18.65

Cycle Electric CE-546 Replacement Regulator for Harley-Davidson Model 61 6 Volt Generators
$186.19 $199.31

Thrashin Supply Co. ARP Foot Peg Hardware Kit for Harley-Davidson FXR/XL/Dyna
$46.00

Dynatek Performance Electronics Programing Kit for Dynatek 2000I PC Programmable Ignitions
$183.71

Lowbrow Customs Radius Fork Tube Caps - Chrome - 39mm Narrow Glide Front End
6 reviews $45.76

Drag Specialties Replacement Front Fender 1954-84 Harley-Davidson FLST/FLSTC
$182.95

Lowbrow Customs Blade Levers - Black - 1996 - 2003 Harley Davidson Sportsters and 1996 - 2017 Dyna / Softail / Touring Models
57 reviews $45.51

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 26-1/4 inch - 2 Over
$181.81

Colony #2675-20 Footboard Mounting Kit 1936-1954 Harley-Davidson Davidson Big Twin - Parkerized
2 reviews $60.50

Cycle Electric CE-500L Replacement Regulator for DGV-5000L Generator
6 reviews $180.23 $192.93

Trader Cody's Choppers Rear Master Cylinder Mount for Harley-Davidson 4 Speeds - Stainless Steel
$30.00

Prism Supply Co. Bristol Breather - Linkert Carburetor - Polished
$60.00

LePera Pillion P-Pad - Smooth for Bare Bones Solo Seats - fits 1984-1999 Harley-Davidson Softail
$180.00

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

Hawg Supply Swirl Points Cover For Harley Davidson Big Twin & Sportser - Polished
$59.99

Lowbrow Customs Lowbrow Customs Springer Buckhorn Handlebars - 1 inch - Raw
$179.95

Gasbox Heavy Duty Universal 4 Speed Transmission Mounting Plate
$59.95

Fast Eddy Co. No. 56 Intake Leak Tester - 4 Bolt Style
1 review $59.95

Cycle Standard Shift Lever - 1990-2017 Harley-Davidson Dyna/Softail - Chrome - OEM #34564-90A
$35.84

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

3 $178.44 $183.95

Cycle Standard Single Gauge Bracket - Chrome - 1995-2011 Harley-Davidson XL883 1995-2005 FXD Models
$88.99

Colony #2464-5 Brake Drum Wheel Mounting Bolt Set - 1936-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead - Parkerized
4 reviews $25.30

Colony #9608-10 Hex Bolt & Washer Kit Rear Wheel 1973-1992 Harley-Davidson Big Twin 1979-1990 XL - Chrome Plated
3 reviews $29.44

Cycle Standard Screw-In Harley Stock Style Non-Vented Gas Cap - Left Side - 1982-1995 - Chrome
$29.43

Colony #3308-6 Locking Exhaust Bolt Kit 1966-1984 Harley-Davidson Shovelhead
13 reviews $22.00

Gasbox Tumbled Stainless Steel Points Cover for Harley-Davidson Sportsters and 1970 - 1999 Big Twins
3 reviews $21.95

Lowbrow Customs Harley-Davidson Twin Cam A Motor Engine Stand
16 reviews $87.62

Colony #2078-18 Lower Rocker Box Mounting Kit Harley-Davidson Evo Big Twin and Sportster
17 reviews $35.00

LCFabrications "The OG" Clutch Switch Pod Delete - Polished - for Harley-Davidson
8 reviews $35.00

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

Cycle Standard Chrome 6V Coil 1947 & Up Harley-Davidson
2 reviews $58.18

Lowbrow Customs 39mm Low Profile Fork Caps - Black Anodized Aluminum

12 $58.02

Cycle Standard 39mm Fork Seal Rebuild Kit - Showa Forks - 1988-2020 Harley-Davidson XL 1988-94 FXR 1987-2005 Dyna Models
6 reviews $15.68

Cycle Standard Harley Shifter Shaft Lever OEM #33709-82A
17 reviews $21.38

Colony #7131-12 Aluminum Alloy Tubular Adjustable Pushrods & Lifter Adapters 1953-1965 Harley-Davidson Panhead
$85.45

V-Twin Manufacturing Forged Floorboard Tab Set for 1 inch Tubing
$39.67 $56.57

S&S Cycle 2.5 inch Velocity Stack for S&S Super E/G Carburetor
2 reviews $168.69 $183.95

Drag Specialties Clutch Cable Harley-Davidson 4 Speed Big Twin 1968-86 - 50" Long
3 reviews $56.13

Gasbox S&S Carburetor Support Bracket - 1999 - 2006 Harley-Davidson Twin Cam
7 reviews $27.99

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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