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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Mooneyes MOON Spun Aluminum Air Cleaner for CV or S&S Super E/G Carburetors
13 reviews $98.00

Cycle Standard 3 position Ignition Key Switch Replaces Harley-Davidson OEM #71425-77 - Chrome Bezel
84 reviews $31.49

Fast Eddy Co. No. 29 Driver Handle with Wedge Spacer
7 reviews $79.95

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

Lowbrow Customs Throttle Housing 1996 & up Harley Push-In Dual Cable - Aluminum - 1 inch
7 reviews $87.35

Cycle Electric Stator CE-8999 for 1989-1999 Harley-Davidson Evo Big Twins with 32 amp Alternator
27 reviews $109.29 $116.99

Cycle Standard High Performance Clutch Pressure Plate for Harley Shovelhead Replaces OEM #37871-41
15 reviews $42.67

Cycle Standard 39MM Chrome Fork Tubes - 25 inch - Stock Length
7 reviews $213.32

Cycle Standard 41MM Chrome Fork Tubes 1949-1976 Harley-Davidson FL - 20 inch - Stock Length
$169.90

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

Lowbrow Customs Belt to Chain Conversion Kit Harley-Davidson Dyna 1994-99 - Chrome Sprocket
2 reviews $207.99

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

Gasbox Strong Arm Top Motor Mount with Coil Mount - 1984-1999 Harley-Davidson Big Twin Evolution
$74.95

Cycle Electric Rectifying Regulator CE-204 - 1981-1988 Harley-Davidson FX FL
9 reviews $164.51 $176.10

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

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

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

Cycle Standard 41MM Chrome Fork Tubes 1949-1976 Harley-Davidson FL - 26 inch - 6 Over
$201.76

Prism Supply Co. Sling Shot Clutch Control - Harley-Davidson 4 Speed - Stainless Steel
1 review $199.99

American Prime Mfg. Comp Master Ignition Advance Unit - 1970-Up Harley-Davidson Replaces OEM #3251770T
6 reviews $88.21

Lowbrow Customs Pursuit Foot Peg Set - Black
25 reviews $88.05 $107.11

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

Cycle Standard Ignition Advance Unit WIth Bolt 1970-Up Harley-Davidson OEM# 3251770T
3 reviews $35.84

Lowbrow Customs Throttle Housing 1981-1995 Harley Thread-In Single Cable - Aluminum - 1 inch
14 reviews $87.35

Cycle Standard Polished Clutch Lever Assembly - 1968-1971 FL/FX 1971-1972 XL - OEM #38608-68
4 reviews $26.96

Fork Co., Ltd Inline Springer Riser Clamp for Fork Sixties Narrow Bars - Dual Clamp - Black
$780.93

Lowbrow Customs Lowbrow Customs Springer Lil Speedies Handlebars - 1 inch - Chrome
1 review $192.81

Lowbrow Customs Springer Top Clamp for Standard 3.5" Handlebar Risers
3 reviews $192.81

9 Finger Fabrication Adjustable Magnetic Lifter Holder - Harley-Davidson Evolution/Twin Cam/M8
16 reviews $35.00

Cycle Standard 41MM Chrome Fork Tubes 1977-1984 Harley-Davidson FL/FLH - 26-7/8 inch - 6 Over
$191.25

Progressive Suspension 412 Series 12" Shocks Black With Short Covers 1973-1986 Harley-Davidson Shovelheads
$379.95

Dynatek Performance Electronics 5 ohm Dual Fire Coil - for Points Ignition
4 reviews $125.54

Gasbox Exhaust Pipe Set 1966-1969 Harley-Davidson Generator Shovelhead FL FLH 74 ci - Bare Steel
1 review $249.99

Fast Eddy Co. No. 42 Starter Clutch/Kicker Gear Puller
$249.95

Lowbrow Customs 39mm Narrow Glide Fork Brace - For Lowbrow Narrow Trees
2 reviews $149.96

PanAm Oils Inc. Oil/Ignition Shut-Off Valve Pre-2000 Harley-Davidson
$249.49

Cycle Standard 35MM Chrome Fork Tubes - 27-1/4 inch - 4 Over
4 reviews $185.61

Lowbrow Customs Harley-Davidson 45 Flathead Motor Engine Stand
8 reviews $81.89

Lowbrow Customs 39mm Fork Shrouds - Black - 1987-Up - Harley-Davidson Sportsters
53 reviews $122.76

Cycle Standard Nose Cone Cam Gear Cover - Chrome - 1973-92 Harley-Davidson Big Twin
2 reviews $180.31

S&S Cycle Super E Carburetor Kit 1966-78 Harley-Davidson Shovelhead
4 reviews $719.96 $799.95

S&S Cycle Super E Carburetor Kit 1979-84 Harley-Davidson Shovelhead
2 reviews $719.96 $799.95

S&S Cycle Super E Carburetor Kit 1993-99 Harley-Davidson Big Twin
2 reviews $719.96 $799.95

Cannonball Extended Clutch Release Lever for Stealthstarter Electric Starter 1936-1964 4 Speed Harley-Davidson Big Twins
1 review $101.88

Airspeed Cycles T-Bar Handlebars - 10 inch Rise - 1 inch - Stainless Steel
2 reviews $235.00

Drag Specialties Steel Clutch Plate Kit - 1968 - 1984 Shovelhead
12 reviews $39.09

Cycle Standard Chrome Mesh CV Carb Air Cleaner - Sportster & Big Twin Harley
41 reviews $100.05

Airspeed Cycles Narrow Bottom Ape Hanger Handlebars - 11 inch Rise - 1 inch - Stainless Steel
$175.00

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

Fast Eddy Co. No. 20 Pinion Gear Locking Tool 1954-1999 Harley Big Twins
7 reviews $99.95

Belt Drives LTD. 8mm/1.5 inch Primary Belt Drive - Electric Start - 1979-E1984 Harley-Davidson Big Twins
1 review $694.40 $730.95

Cycle Standard 22mm Petcock Harley-Davidson Style - Chrome - Right Hand Outlet
17 reviews $36.41

Timken Harley Timken Wheel Bearings - OEM #9033 & 9052 Replacement
13 reviews $22.25

Lowbrow Customs Louvered Air Cleaner for S&S Super E / G Carburetors - Chrome
35 reviews $76.43

S&S Cycle High Performance Hydraulic Tappet Set - 1984-99 Harley-Davidson Big Twin 1986-90 XL
1 review $343.76 $381.95

Lowbrow Customs Radius Breather Bolts for Harley-Davidson Evo - Brass
34 reviews $44.99

Mooneyes MOON No Name Air Cleaner for CV or S&S Super E/G Carburetors
5 reviews $112.00

Lowbrow Customs Rigid Shock Struts for Harley-Davidson Motorcycles
13 reviews $133.89

James Gaskets Fork Seal Rebuild Kit 1975-1984 35mm Harley-Davidson FX and XL Models
6 reviews $22.19

Marion Metalworks Universal Headlight Mounting Bracket/Eyebrow Delete
17 reviews $60.00

Gasbox Upswept Shotgun Exhaust Pipe Set for 1970-1984 Harley-Davidson Shovelhead Rigid Applications
1 review $329.95

Belt Drives LTD. 8mm/3 inch Primary Open Belt Drive - Kick Start - Spline Shaft - 1955-1984 Harley-Davidson Big Twin
1 review $657.35 $691.95

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 32-1/4 inch - 8 Over
$217.13

James Gaskets Top End Gasket Kit 1966-1984 Harley-Davidson Shovelhead
$71.99

Arlen Ness Big Sucker Stage 1 Air Filter Kit - Chrome - 1999-2017 Harley-Davidson Twin Cam
$215.96 $239.95

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

Cycle Standard Rocker Oil Lines - Chrome - 1966-84 Harley-Davidson Shovelhead
$32.16

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

Cycle Standard 39mm Fork Leg Assembly Rebuild Kit 1988-2022 Harley-Davidson XL 1991-1998 FXD 1987-2000 FXR
$79.20

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

Fast Eddy Co. No. 21 Wrist Pin Bushing Installer / Remover
15 reviews $89.95

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 30-1/4 inch - 6 Over
$208.14

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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