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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Airspeed Cycles T-Bar Handlebars - 12 inch Rise - 1 inch - Stainless Steel
1 review $235.00

Cycle Standard Screw-In Harley Stock Style Vented Gas Cap - 1996 & up - Chrome
38 reviews $29.28

Bar-None Moto BNM Two-Up Bolt On Sissy Bar For Rogue Fender - 1958-1984 Harley-Davidson Panhead/Shovelhead
$307.02

Cycle Electric Alternator Kit CE-62AR for 1991-1998 Harley-Davidson Dyna 1984-1999 Softail Models
$457.86 $490.13

Andrews V4 Camshafts - 1986-1990 Harley-Davidson Sportster XL
$454.46 $504.95

Lowbrow Customs Throttle Housing 1981-1995 Harley Thread-In Single Cable - Aluminum - 1 inch
14 reviews $93.46

Cycle Electric Alternator Kit CE-67TR 1999-2003 Harley-Davidson FXD Dyna - Upgrade to 3 Phase
$451.28 $483.08

Dynatek Performance Electronics 3 Ohm Dual Output HD - For Use With Dyna Electronic Ignitions
3 reviews $132.86

Prism Supply Co. Harley Jockey Shifter Kit - 5 & 6 Speed Big Twin - Stainless Steel
14 reviews $89.99

Lectron Lectron Billetron Carburetor for 100-124 Cubic Inch Harley-Davidsons
$899.00

Lowbrow Customs Dimpled Steel Motorcycle Oil Tank for H-D Sportster Big Twin and Universal Choppers
29 reviews $224.94

Bar-None Moto BNM Bolt On Sissy Bar For Rogue Fender - 1958-1984 Harley-Davidson Panhead/Shovelhead
5 reviews $293.54

Cycle Standard 39MM Chrome Fork Tubes - 25 inch - Stock Length
7 reviews $219.72

LePera Cobra Seat - Smooth - fits 1984-1999 Harley-Davidson Softail
1 review $433.00

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

Lowbrow Customs Louvered Air Cleaner for Harley CV / EFI 1991-2020 - Chrome
81 reviews $81.78

Cycle Standard Polished Clutch Lever Assembly - 1968-1971 FL/FX 1971-1972 XL - OEM #38608-68
4 reviews $29.66

Cycle Standard Chrome 12V Square Coil 1948-60 Harley-Davidson Big Twins
$122.59

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

3 $178.44 $183.95

Fast Eddy Co. No. 6 Transmission Socket 1-7/8" for 1936-2005 Harley Big Twins
17 reviews $139.95

Lowbrow Customs T-Bars Handlebars - 10 inch Rise - 1 inch Diameter - Black
25 reviews From $142.92

Lowbrow Customs Belt to Chain Conversion Kit Harley-Davidson Dyna 2000-05 Spoked Wheels - Black Sprocket
4 reviews $209.99

Lowbrow Customs T-Bars Handlebars - 8 inch Rise - 1" Diameter - Black
11 reviews From $141.73

Cycle Standard 5 Post Ignition Key Switch Replaces Harley-Davidson OEM #71500-36T - Chrome Bezel
7 reviews $50.55

Cycle Electric Rectifying Regulator CE-320 - 1989-1996 Harley-Davidson FL 1989-1998 FXD FXR
23 reviews $162.71 $174.17

James Gaskets Complete Motor Gasket Kit - Shovelhead 1966 - 1984
8 reviews $116.17

Lowbrow Customs Lowbrow Customs Springer Lil Speedies Handlebars - 1 inch - Raw
5 reviews $168.70

Lowbrow Customs Premium 39mm Chrome Fork Seal Covers - Chrome - Harley-Davidson OEM #46002-87
3 reviews $42.45

Gremlin Wiring Gremlin Wiring Harness Kit for 1949-1999 Kick-Only Shovelhead & Big Twin Models
1 review $199.99

Old-Stf Cycle Shovelhead Rocker Box Split Oil Lines - Stainless & Black
$99.95

Cycle Standard 5-1/2 inch Forged Aluminum Handlebar Risers - Chrome
$92.64

Cycle Standard 3 position Ignition Key Switch Replaces Harley-Davidson OEM #71425-77 - Chrome Body / Chrome Bezel
18 reviews $41.58

Cycle Standard Drilled Stainless Steel Brake Rotor - 11.5 inches - Replaces Harley-Davidson OEM #41791-79A
2 reviews $101.89

Cycle Standard 3 Stud Clutch Hub Assembly - Harley-Davidson Big Twins 1941-1984 - OEM #37550-41B
15 reviews $117.39

Cycle Standard 35MM Chrome Fork Tubes - 29-1/4 inch - 6 Over
3 reviews $206.07

Cycle Standard Mega Nut Sprocket and Pulley Lock Nut for 1993+ Harley Sportster, Big Twin, and Twin Cam
19 reviews $73.66

Cycle Standard Chrome Rear Axle Kit 1980-2001 Harley-Davidson FL FLH FLT 82-94 FXR 86-06 FLST
2 reviews $67.40

Cycle Standard Clutch Shell With Starter Ring 1970-E1984 Harley-Davidson Big Twins - OEM #37702-70A
$266.91

Cycle Standard Drilled Stainless Steel Brake Rotor - 11.5 inches - Rear - Replaces Harley-Davidson OEM #41789-92
$102.14

Cycle Standard Drilled Stainless Steel Brake Rotor - 10 inches - Replaces Harley-Davidson OEM #41807-73, 41813-79
2 reviews $100.89

Cycle Standard Drilled Stainless Steel Brake Rotor - 11.5 inches - Replaces Harley-Davidson OEM #44156-00
4 reviews $101.89

Cycle Standard Oil Temperature Dipstick OEM #62668;828-87 Harley-Davidson 1984-99 Softail FXST FLST 1979-2003 XL
29 reviews $36.28

Colony #3020-8 Head Bolt Set 12 Point 1992-Up Harley-Davidson Big Twin/Twin Cam 1993-Up XL - Zinc Plated
3 reviews $83.00

American Prime Mfg. Cast Alternator Shroud Cover for Open Belt Drives fits 1970-2006 Harley-Davidson Big Twins - Raw Finish
1 review $33.68

Cycle Standard Nose Cone Cam Gear Cover - Chrome - 1973-92 Harley-Davidson Big Twin
2 reviews $189.33

Drag Specialties Chrome Rocker Box Cover 1992-1999 Harley-Davidson EVO Big Twins
$364.59

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

Lowbrow Customs Louvered Air Cleaner for S&S Super E / G Carburetors - Chrome
37 reviews $81.78

Prism Supply Co. Jockey Shifter for Harley-Davidson Big Twin - Short Arm
6 reviews $89.99

Bates BattBoy 65 Battery Box 1965-84 Harley-Davidson FL FLH and 1967-78 XL
9 reviews $119.81

Cycle Electric Stator CE-3845-02 for 2002 - 2005 Harley-Davidson FLH and FLT Models
11 reviews $143.49 $153.60

Cycle Standard Ride-On Engine Stablizer Link Kit 1982-94 Harley-Davidson FXR 91-94 Dyna 80-08 Touring
$106.96

Gigacycle Garage 4 piston Rear Brake Bracket 1982-94 and 1999-2000 Harley-Davidson FXR Models
1 review $355.00

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Straight Outlet
32 reviews $37.14

Prism Supply Co. 4 inch Mid-Pegs - Harley-Davidson Cone Shovelhead and Evo Big Twins - Open Primary
2 reviews $98.99

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

S&S Cycle High Performance Hydraulic Tappet Set - 1984-99 Harley-Davidson Big Twin 1986-90 XL
1 review $350.20 $381.95

Gasbox S&S Carburetor Support Bracket - Harley-Davidson Shovelhead - Tumbled Stainless
54 reviews $21.95

Lowbrow Customs Pursuit Foot Peg Set - Brass
38 reviews $175.72

Lowbrow Customs Rigid Shock Struts for Harley-Davidson Motorcycles
13 reviews $140.58

Cycle Standard Super Nut for Harley-Davidson Four Speed Transmission - OEM #35211-36
26 reviews $33.18

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 34-1/4 inch - 10 Over
$229.45

Prism Supply Co. Darlington Air Cleaner - CV Carburetor - Brushed Aluminum
$224.99

Gasbox Strong Arm Top Motor Mount With Coil Mount 1948-84 Harley Big Twins
6 reviews $74.95

Cycle Standard Drilled Stainless Steel Brake Rotor - 11.5 inches - Replaces Harley-Davidson OEM #41797-00
1 review $101.89

Cycle Standard Grooved Stainless Steel Hidden/Internal Stop Fork Neck Cup Kit 1949-1987 Harley-Davidson Big Twins
1 review $114.71

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

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

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 24-1/4 inch
$175.80

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

Lowbrow Customs Belt to Chain Conversion Kit Harley Davidson Dyna Twin Cam 2006-2017 - Silver Sprocket
3 reviews $222.49 $259.99

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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