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

Lowbrow Customs Blade Levers - Black - 1996 - 2003 Harley Davidson Sportsters and 1996 - 2017 Dyna / Softail / Touring Models
55 reviews $39.40

V-Factor Motorcycle Parts Lever Action Starter Solenoid 1965-1986 Harley-Davidson Big Twin 4 Speed 1984-1988 Softail - Black
$119.95

Cycle Standard 3 position Ignition Key Switch Replaces Harley-Davidson OEM #71425-77 - Black Body / Black Bezel
14 reviews $35.92

Cycle Standard 22mm Petcock Round Body Solid Brass Harley-Davidson Style - Left Side Position
14 reviews $66.88

Cycle Standard 3 position Ignition Key Switch Replaces Harley-Davidson OEM #71425-77 - Chrome Bezel
79 reviews $29.99

Gasbox Strong Arm Top Motor Mount 1948-84 Harley Big Twins
5 reviews $69.95

James Gaskets Exhaust Port Gasket 1982-Up Harley-Davidson
8 reviews $14.57

Lowbrow Customs Harley-Davidson 4 Speed Transmission Work Stand
22 reviews $37.12

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

Lowbrow Customs Finish Line Foot Peg Set - Black Aluminum
13 reviews $95.59

Performance Machine 1 inch Contour Billet Clutch Lever Assembly - Chrome
$343.95

Lowbrow Customs Rabbit Ears Handlebars - 1 inch - Black
17 reviews From $131.89

Old-Stf Cycle Shovelhead Rocker Box Split Oil Lines - Stainless Steel
13 reviews $114.29

Dynatek Performance Electronics 3 Ohm Dual Output HD - For Use With Dyna Electronic Ignitions
$122.21

Progressive Suspension 412 Series 11" Shocks Chrome With Short Covers 1973-1986 Harley-Davidson Shovelheads
$379.95

Colony #7132-12 Aluminum Alloy Tubular Adjustable Pushrods & Lifter Adapters - 1966-1984 Harley-Davidson Shovelhead
$85.45

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

Lowbrow Customs Spare Parts Book for 1949-1957 Harley-Davidson Panhead
14 reviews $36.03

Lowbrow Customs Pursuit Shifter Peg for Harleys - Raw Aluminum
27 reviews $29.55

Cycle Standard 6 Post Ignition Key Switch Replaces Harley-Davidson OEM # 71501-73A - Chrome Bezel
10 reviews $43.96

Cycle Standard Replacement Dished Sprocket - Chrome - 47 Tooth - 1973-1985 Harley-Davidson Big Twin 1979-81 XL
$66.80

Cycle Standard Heavy Duty Chrome Kicker Lever 1936-1977 Harley-Davidson Big Twin 1957-1976 XL
7 reviews $61.85

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

$165.56 $183.95

Cycle Standard Chrome 12V Coil 1947 & Up Harley-Davidson
4 reviews $58.92

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

Lowbrow Customs Throttle Housing 1981-1995 Harley Thread-In Single Cable - Aluminum - 1 inch
13 reviews $83.19

Prism Supply Co. Bristol Breather - CV Carburetor - Tumbled
$55.00

Colony #3082-7 Seat Spring Upper and Lower Set 1958-Up Harley-Davidson Swingarm Big Twins
1 review $82.50

Cycle Electric Rectifying Regulator CE-324 32 Amp - 1999-2003 Harley-Davidson Dynas
1 review $163.63 $175.16

Cycle Standard Oil Temperature Dipstick OEM# 62668;828-87 Harley-Davidson 1984-99 Softail FXST FLST 1979-2003 XL
28 reviews $31.41

Cycle Electric Rectifying Regulator CE-204 - 1981-1988 Harley-Davidson FX FL
8 reviews $162.70 $174.16

Prism Supply Co. Sling Shot Clutch Control - Harley-Davidson 5 & 6 Speed - Stainless Steel
1 review $324.99

Cycle Standard 41MM Chrome Fork Tubes 1949-1976 Harley-Davidson FL - 20 inch - Stock Length
$164.95

Cycle Electric Rectifying Regulator CE-320 - 1989-1996 Harley-Davidson FL 1989-98 FXD FXR
19 reviews $161.10 $172.45

Lowbrow Customs Finned Thread-In Gas Cap for Harley-Davidson 1996 & later - Polished
30 reviews $48.84

Bates CV Carb Choke Relocation Bracket - fits Harley Sportster, Dyna, FXR, Softail
20 reviews $18.63

Cycle Standard Clutch Hub Bearing Kit - 1941-84 Harley-Davidson Big Twins
1 review $41.90

Lowbrow Customs Radius Breather Bolts for Harley-Davidson Twin Cam - Chrome Plated
17 reviews $44.99

Cycle Standard Nose Cone Cam Gear Cover - Black- 1973-92 Harley-Davidson Big Twin
$174.03

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Right Hand Outlet
13 reviews $25.46 $35.09

Cycle Standard Clutch Plate Kit 1968-1984 Harley-Davidson Big Twins
$76.29

Cycle Standard 5 Post Ignition Key Switch Replaces Harley-Davidson OEM # 71500-36T - Chrome Bezel
5 reviews $43.76

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Left Hand Outlet
21 reviews $34.94

Drag Specialties Front Brake Master Cylinder Assembly - Black - Dual Disc 1982-85 Harley-Davidson Big Twin and Sportster XL
$303.80

Cycle Electric Stator CE-8188 for 1981 - 1988 Harley-Davidson Big Twin Models - OEM 29965-81A
3 reviews $100.04 $107.08

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

Fast Eddy Co. No. 10 Transmission Socket 2-1/4" for 2007 & later Harley Big Twins
7 reviews $149.95

Gasbox Strong Arm Top Motor Mount With OEM 71425-77 Ignition Switch Mount 1948-84 Harley Big Twins
1 review $74.95

Colony #7135-8 Custom Pushrod Covers - 1949-1984 Harley-Davidson Panhead/Shovelhead - Chrome Plated
5 reviews $80.00

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

Drag Specialties Vintage Style Half Moon Floorboards - Black
$155.48

Bates Springer Riser Studs M20 x 1.5 x 1/2-13 inch thread
1 review $37.20

Cycle Standard 2 Position Ignition Key Switch Replaces Harley-Davidson OEM #71428-90A
20 reviews $36.38

LePera Bare Bones Solo Seat - Smooth - fits 1984-1999 Harley-Davidson Softail
$318.00

Cycle Standard Bayonet / Cam Harley Style Vented 2.5" Gas Cap - Chrome
12 reviews $32.33

Colony #8312 CAD Complete Stock Hardware Kit - 1976-1978 Harley-Davidson Shovelhead - CAD Plated
1 review $295.38

Lowbrow Customs Spare Parts Book for 1971-1980 Harley-Davidson FX
22 reviews $42.03

Lowbrow Customs 39mm Solid Riser Bushings for Harley-Davidson - Black
20 reviews $32.02

Zenith Fuel Systems Genuine Bendix Zenith Carburetor Rebuild Kit OEM #27132-71
$72.95

Lowbrow Customs Louvered Air Cleaner for Harley CV / EFI 1991-2020 - Black
51 reviews $72.79

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

Lowbrow Customs Competition Screw-In Gas Cap for Harley-Davidson 1996 & later - Polished
37 reviews $40.29 $49.18

American Prime Mfg. Cast Alternator Shroud Cover for Open Belt Drives fits 1970-2006 Harley-Davidson Big Twins - Polished
$72.09

Lowbrow Customs Louvered Air Cleaner for S&S Super E / G Carburetors - Black
20 reviews $72.79

Cycle Standard 5-1/2 inch Pullback Handlebar Riser Set - Black
$82.46

Progressive Suspension Heavy-Duty Fork Springs 1999-2005 Harley-Davidson FXD FXDC FXDL 2004-15 XL Models
2 reviews $139.95

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

Mid-USA Rear Master Cylinder - 1958-72 Harley-Davidson Big Twin - Replaces OEM 41761-58 41761-78
5 reviews $69.95

Cycle Electric Regulator CE-102 - 1965-77 Harley-Davidson XL XLH XLCH 1965-69 FL FLH
9 reviews $139.22 $149.03

Lowbrow Customs Harley-Davidson Twin Cam A Motor Engine Stand
16 reviews $77.99

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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