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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Arlen Ness Big Sucker Stage 1 Air Filter Kit - Chrome - 1993-1999 Harley-Davidson Evolution Big Twin
2 reviews $215.96 $239.95

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

Drag Specialties Dual Gauge Bracket - Black - 1995-2001 Harley-Davidson XL1200 99-05 FXDX 95-00 FXDX-CONV
2 reviews $213.16

Drag Specialties Dual Gauge Bracket - Chrome - 1995-2001 Harley-Davidson XL1200 99-05 FXDX 95-00 FXDX-CONV
$213.16

Colony #7707-4 Spring Rod Kit 1936-1947 Harley-Davidson 45's & Big Twin Springers
2 reviews $42.63

Cycle Standard Rocker Box D-rings - Polished - 1948-65 Harley-Davidson Panhead
$106.42

Drag Specialties 3-1/2 inch Pullback Handlebar Riser Set - Black
$105.01

LCFabrications Brake Switch Pod Delete - Polished - for H-D
16 reviews $35.00

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

Colony #2487-2 Pike Nut Rear Axle Covers 1984-2007 Harley-Davidson Softail - Chrome Plated
4 reviews $69.58

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

James Gaskets Primary Cover & Inspection Cover Gasket Kit 8-Hole Primary Cover 1970-1982 Harley-Davidson Shovelhead
$68.87

Lowbrow Customs Finned Master Cylinder Cover - 1982 - 2005 Harley-Davidson #45004-85
20 reviews $29.33

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

Lowbrow Customs Finish Line Foot Peg Set - Black Aluminum
13 reviews $100.37

Drag Specialties Shifter Linkage - Chrome - 1993-2005 Harley-Davidson FXDWG
2 reviews $66.90

Colony #7508-20 Upper Pushrod Cover Kit 1940-1947 Harley-Davidson Knucklehead Shovelhead and Evo - Chrome Plated
3 reviews $50.08

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

Biltwell Thunder Risers - Polished Stainless
7 reviews $199.95

James Gaskets Fork Seal Rebuild Kit 1949-1977 Harley-Davidson FL
$22.20

Cycle Standard 39mm Fork Seal Rebuild Kit - Showa Forks - 1988-2020 Harley-Davidson XL 1988-94 FXR 1987-2005 Dyna Models
6 reviews $14.25

Standard Motorcycle Products Ignition Sensor Assembly - 1995-97 Harley-Davidson XL 1998-03 XL1200S
2 reviews $65.95

Cycle Standard Transmission Mounting Plate 1986-1999 Harley-Davidson Softail - Chrome
$32.97

Colony #2314-36 Transmission Mounting Kit 1936-1964 Harley-Davidson Big Twin - Parkerized
3 reviews $49.41

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

Lowbrow Customs Throttle Housing 1981-1995 Harley Thread-In Dual Cable - Black - 1 Inch
8 reviews $98.27

Drag Specialties Wheel Bearings and Races - Replaces Harley-Davidson OEM #9052
3 reviews $28.00

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

Fast Eddy Co. No. 40 Crankcase Timken Race Remover / Installer
2 reviews $64.95

Colony #7823-12 Pushrod Covers 1948-Early 1979 Harley-Davidson Panhead & Shovelhead - Chrome Plated
4 reviews $64.80

Lowbrow Customs Locking Tab Washer for Harley-Davidson Rear Wheel Pulley / Sprocket - Tumbled Stainless
24 reviews $11.43

Lowbrow Customs Rocker Box Oil Pressure Gauge Adapter Fitting - Brass - 1971 - Up Harley-Davidson Shovelhead, 1971 - 1985 Sportster
8 reviews $27.74

Lowbrow Customs Rocker Box Oil Pressure Gauge Adapter Fitting - Chrome - 1971 - Up Harley-Davidson Shovelhead, 1971 - 1985 Sportster
9 reviews $27.74

Colony #2943-1 Boot Guard 1936-Up Harley-Davidson Knucklehead/Flathead - Black Powder Coated
$95.70

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

Drag Specialties AGM Maintenance Free Battery 1997-2003 Harley-Davidson XL 91-99 FXST/FLST 91-98 FXD/FXDWG 00-23 Softail 99-17 FXD/FXDWG/FLD
$190.99

Cycle Standard Drilled Stainless Steel Brake Rotor - 11.5 inches - Replaces Harley-Davidson OEM #41797-00
1 review $95.22

Bad&G Customs Harley Dyna Battery Cover Bag - Bolt-On Storage for 2006 and Up Models
23 reviews $100.00

Cycle Standard Chrome Kick Return Spring - 1936 - 1984 Harley Knucklehead Panhead Shovelhead #33085-3
4 reviews $23.71

Cycle Standard Drilled Stainless Steel Brake Rotor - 10 inches - Replaces Harley-Davidson OEM #41807-73, 41813-79
2 reviews $94.29

Cycle Standard Drilled Black Brake & Clutch Lever Set for Harley 96-03 Sportster and 96-06 Big Twins
24 reviews $47.09

Lowbrow Customs Pursuit Shifter Peg for Harleys - Raw Aluminum
28 reviews $31.03

Colony #7410-1 Sprocket Shaft Bearing Retainer with Lip Seal Standard Size Replaces 1955-1968 Harley-Davidson 74's
7 reviews $45.98

Thrashin Supply Co. ARP Foot Peg Hardware Kit for Harley-Davidson FXR/XL/Dyna
$45.95

Colony #9818-5 Rear Disc Brake Rotor Torx Bolt Kit 1997-Up Harley-Davidson W/Cast Wheel - Chrome Plated
18 reviews $15.13

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

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

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

The Rough Trade 2-1/8" Wrench for Harley-Davidson Large Port Knucklehead & Panhead Intake
$20.00

Colony #9602-8 Oil Tank Mounting Kit - 1936-1957 Harley-Davidson Knucklehead/Panhead- Chrome Plated
2 reviews $19.97

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 Nose Cone Cam Gear Cover - Black- 1973-92 Harley-Davidson Big Twin
$179.25

Colony #9420-21 Transmission Mounting Kit Late 1977-1986 Harley-Davidson Big Twin - Chrome Plated
3 reviews $35.84

Cycle Standard 35MM Chrome Fork Tubes - 25-1/4 inch - 2 Over
3 reviews $178.51

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

Cycle Standard Popsicle Kicker Pedal with Rubber for 1977 & earlier Harley-Davidson Kicker Arms Replaces OEM #33175-16A
18 reviews $25.14

Fast Eddy Co. No. 5 Cam Gauge Pins .108" 1990-1999 Harley Big Twins
2 reviews $21.95

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

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

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

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

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

Burly Brand Scrambler Handlebars - 1 inch - Chrome

$171.86 $190.95

Cycle Standard Mini 1:1 ratio Mechanical Speedometer - 2.4 inch
4 reviews $56.69

Cycle Standard Shift Lever Bracket 1970-1984 Harley-Davidson FL Models - OEM #33630-70
$56.57

Colony #9807-10 Rear Rotor To Hub Torx Bolt Kit 1992-Up Harley-Davidson XL/FLT/Softail - Chrome Plated
2 reviews $21.12

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

Colony #9843-8 Chrome Countersink Washer Set for #10 Flat Head Socket Screws Harley-Davidson - Chrome Plated
$13.94

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

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

Burly Brand Narrow Bottom Ape Hanger Handlebars - 1 inch - 16 inch Rise - Chrome

2 $165.56 $183.95

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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