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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Cycle Standard Mini 2:1 ratio Mechanical Speedometer with Trip Meter - 2.4 inch
12 reviews $92.02

Colony #8793-5 Disc Front Brake Rotor to Hub Torx Screw Kit 1984-Up FX/FXR/FLT/XL - Chrome Plated
11 reviews $14.52

Colony #7354-2 Chrome Plated Oil Tank Cap & Dipstick 1 1/4-20 Thread 1936-1954 Stock Harley-Davidson Tanks - Chrome Plated
8 reviews $27.50

Cycle Electric LeBeef CE-500-CP Replacement Regulator for DGV-5000 Generator
$274.66 $294.02

Lowbrow Customs Rabbit Ears Handlebars - 1 inch - Black
19 reviews From $135.85

Cycle Standard Dragton II Air Cleaner - Chrome - Fits Bendix / Zenith, Keihin (except CV) Carbs
15 reviews $68.04

Cycle Electric LeBeef CE-540-CP Regulator for use on 65a 12v Harley-Davidson Generators
$275.98 $295.43

Hawthorn Co. Cycles Battery Box Antigravity 12 Cell w/ Breaker Mount & OEM Horseshoe Tank Adapter Plate
$90.00

V-Factor Motorcycle Parts 18 Spoke Black Stainless Steel Brake Rotor - 11.5 inches - Rear - Replaces Harley-Davidson OEM #41789-92/41797-00
$89.95

Cycle Standard Screw-In Harley Stock Style Vented Gas Cap - 1982-1995 - Chrome
$26.75

Colony #3605-45 Horn Mounting Kit 1936-1941 Harley-Davidson All Models (except VL/RL)
$89.00

Fast Eddy Co. No. 2 Pinion Nut Socket 1954-1992 Harley Big Twins
17 reviews $37.95

V-Twin Manufacturing Forged Floorboard Tab Set for 1-1/8 inch Tubing
$65.87

Lowbrow Customs Throttle Housing 1981-1995 Harley Thread-In Dual Cable - Aluminum - 1 Inch
5 reviews $87.35

Lowbrow Customs Mounting Kit for WX Gas Tanks - 1985-1999 Harley-Davidson Softails
4 reviews $65.51

V-Factor Motorcycle Parts MCM Slash Cut Drag Pipes 1971-1984 Harley-Davidson FX 1981-1982 FXWG - Chrome
$129.99

Drag Specialties Shifter Linkage - Black - 1984-2021 Harley-Davidson FLHT/FLHR/FLHX/FLTRX/FLTRU 2000-17 FLST/FLS
$64.84

Drag Specialties 58" Shovelhead Clutch Cable for 1968-1986 Harley Big Twin 4-Speed - Replaces OEM #38618-68C
7 reviews $64.84

Cycle Standard Clutch Cable OEM #38602-92 Harley Dyna 1992-2005
$51.15

Cycle Standard Single Gauge Bracket - Black - 1995-2011 Harley-Davidson XL883 1995-2005 FXD Models
2 reviews $84.99

Lowbrow Customs 60 psi Oil Pressure Gauge - White Face
24 reviews $42.26

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

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

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

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

Lowbrow Customs Domed Screw-In Gas Cap for Harley-Davidson 1996 & later - Brass
20 reviews $83.23

Lowbrow Customs Radius Fork Tube Caps - Chrome - 39mm Narrow Glide Front End
6 reviews $41.60

Joker Machine Indicator Light Handlebar Clamp - Black
$82.95

Lowbrow Customs Blade Levers - Black - 1996 - 2003 Harley Davidson Sportsters and 1996 - 2017 Dyna / Softail / Touring Models
56 reviews $41.37

Cycle Standard Domed Slim Chrome Screw-In Harley Style Gas Cap 1996 & up
16 reviews $27.50

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

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

Cycle Standard Bayonet / Cam Harley Style Non-Vented 2" Gas Cap - Chrome
$13.57

Fork Co., Ltd British Wide and Narrow Handlebars - Stainless Steel
$243.89

Cycle Standard Exhaust Port Gaskets - 1966-1984 Harley-Davidson FX/FL OEM# 65843-68A - 2 Pack
$11.00

Colony #3254-6 Exhaust Pipe Locking Bolt Mounting Kit 1966-1984 Harley-Davidson Shovelheads - Zinc Plated
14 reviews $22.00

Drag Specialties 30A Circuit Breaker 1970-1999 Harley-Davidson Big Twin/XL 1999 Twin Cam
$8.27

Cycle Standard Kickstand Spring 1936-1987 Harley-Davidson Big Twins / Pre 1984 Ironhead Sportster Models - Chrome - OEM #50011-30
44 reviews $8.22

James Gaskets Rocker Cover Gasket Kit 1992-1999 Harley-Davidson EVO Big Twins
$79.26

Colony #3066-36 Valve Cover Kit 1939-1948 Harley-Davidson UL/ULH - CAD Plated
2 reviews $236.50

Airspeed Cycles Rabbit Ears Handlebars - 12 inch Rise - 1 inch - Stainless Steel
$235.00

Airspeed Cycles T-Bar Handlebars - 8 inch Rise - 1 inch - Stainless Steel
$235.00

Colony #3647-10 Sprocket Bolt Kit 1973-Up Harley-Davidson Big Twin & Sportster Chain Drive Models - Chrome Plated
$26.00

K&N Air Filters Oil Filter - Black - Harley-Davidson Evolution Big Twin Harley and Sportster Models - K&N Part #KN-170
16 reviews $17.99

Standard Motorcycle Products Points & Condenser Kit 1970-E1978 Harley-Davidson Shovelhead (L1978-1984 Big Twin if converted to points) 1971-E1978 XL
$17.95

Cycle Standard Hidden / Internal Fork Stop Kit Harley-Davidson Big Twins
$77.54 $103.38

Colony #3092-24 Valve Spring Cover Kit 1937-1938 Harley-Davidson Big Twin Side Valve - Chrome Plated
$231.00

Cycle Standard Oil Temperature Dipstick OEM #62668;828-87 Harley-Davidson 1984-99 Softail FXST FLST 1979-2003 XL
29 reviews $32.98

Drag Specialties Chrome Rear Axle Kit 1973-1983 Harley-Davidson FL/FX OEM# 41552-73
$76.91

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

S&S Cycle Throttle Cable Guide - Use a CV Cable on an S&S Super E/G Carburetor
7 reviews $38.27 $40.95

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

Cycle Standard 12" Chrome Shocks With Chrome Spring - Stock Length - 1973-1984 Harley-Davidson FX/FXE 1972-1984 FL
$227.10

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

Lowbrow Customs Spare Parts Book for 1949-1957 Harley-Davidson Panhead
15 reviews $37.83

Gasbox Strong Arm Top Motor Mount With Crank Key Mount 1948-1984 Harley Big Twins
5 reviews $74.95

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 34-1/4 inch - 10 Over
$222.77

Cycle Standard Heel-Toe Shift Lever - 1965-1984 Harley-Davidson FL/FLH (With Splines) - Chrome - OEM #34692-74TA
$55.48

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

Colony #3252-6 Locking Exhaust Pipe Bolt Kit 1966-1984 Harley-Davidson Shovelhead - Chrome Plated
8 reviews $27.50

Hawg Supply Ratchet Top Shifter - Straight Arm
1 review $109.99

Fast Eddy Co. No. 30 Wheel Bearing Race Remover / Installer
6 reviews $54.95

Lowbrow Customs Domed Steel Motorcycle Oil Tank for H-D Sportster Big Twin and Universal Choppers
23 reviews $218.39

Drag Specialties Clutch Cable Harley-Davidson 4 Speed Big Twin 1968-86 - 50" Long
3 reviews $54.54

Colony #8160-4 Rear Axle Nut and Lock Kit - 1930-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead - Chrome Plated
$31.14

Cycle Standard Universal Fork Boot Gaiter Set for 41mm Front Forks
11 reviews $43.45

Colony #9926-17-P Upper and Lower Motor Mount Smooth Allen Kit 1970-1984 Harley-Davidson Shovelhead - Chrome Plated
3 reviews $43.45

Colony #2428-6 Handlebar Damper Kit 1973-Up Harley-Davidson Big Twin/Sportster
12 reviews $16.70

Colony #7800-8 Acorn Bolt Transmission Mounting Plate to Frame Kit 1936-1986 Harley-Davidson Big Twins & 4 Speed - Chrome Plated
5 reviews $23.91

Gasbox Upswept Exhaust Pipe Set 1948-1957 Harley-Davidson Rigid Panhead - Chrome
5 reviews $214.95

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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