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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Cannonball Lion Battery Box for Li-Ion Batteries 1936-1964 Harley-Davidson OHV Big Twin 1937-1948 SV Big Twin
$463.52

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

Cycle Standard Smooth Stainless Steel Hidden/Internal Stop Fork Neck Cup Kit 1949-1987 Harley-Davidson Big Twins
2 reviews $114.71

Cycle Standard Tail Light Assembly for 1973-1999 Harley-Davidsons - Replaces OEM #68008-73A
13 reviews $65.15

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

Progressive Suspension 412 Series 11" Shocks Chrome With Full Covers 1973-1986 Harley-Davidson Shovelheads
$454.95

Andrews N4 Camshafts - 2000-Up Harley-Davidson Sportster XL 2000-02 Buell
$454.46 $504.95

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Right Hand Outlet
13 reviews $26.73 $36.84

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

Cycle Standard 22mm Petcock Round Body Solid Brass Harley-Davidson Style - Left Side Position
15 reviews $75.14

Trader Cody's Choppers Midway Mid Controls 1970-1984 Harley-Davidson Shovelhead 1984-1999 Evo - Chrome
$450.00

Cycle Standard Fork Neck Cup Set for 1948-1986 Harley-Davidson Big Twins OEM #48311-60
4 reviews $50.00

Thrashin Supply Co. Militant Foot Pegs - Black
3 reviews $149.95

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

PanheadEric Precision Stainless Steel Rear Chain Adjuster Screws 1936-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead
$40.00

Cycle Standard 22mm Petcock Harley-Davidson Style - Chrome - Straight Outlet
19 reviews $39.99

Lowbrow Customs Deluxe Choke Knob Enricher for Harley-Davidson S&S Super E and G Carburetors - Chrome
45 reviews $48.61

Gasbox CV Choke Mount - Tumbled Stainless
25 reviews $18.99

Cycle Standard Laydown License Plate Mount - Black - Bolt-on Fitment for 1955 - 2018 Harley-Davidson
23 reviews $43.62

Lowbrow Customs T-Bars Handlebars - 12 Inch Rise - 1 inch Diameter - Black
2 reviews $144.14

Cycle Standard 5-1/2 inch Pullback Handlebar Riser Set - Chrome
$106.42

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

Hawg Supply Carburetor Support Bracket for Harley-Davidson Ironheads and Shovelheads with Fuel Filter
$84.99

Lowbrow Customs Belt to Chain Conversion Kit 2000-2005 Harley-Davidson Dyna Spoked Wheels - Chrome Sprocket
1 review $212.43

Drag Specialties Predator III 2-Up Seat - Classic Stitch - 1982-2000 Harley-Davidson FXR
$422.95

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

Lowbrow Customs Fish Scale Master Cylinder Cover - 1982 - 2005 Harley-Davidson #45004-85
18 reviews $32.34

Cycle Standard Chrome Mesh CV Carb Air Cleaner - Sportster & Big Twin Harley
41 reviews $105.05

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

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

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

Lowbrow Customs Belt to Chain Conversion Kit Harley Davidson Dyna Twin Cam 2006-2017 - Black Sprocket
15 reviews $207.99

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

Cycle Standard 3 position Ignition Key Switch Replaces Harley-Davidson OEM #71425-77 - Black Body / Black Bezel
16 reviews $41.49

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

Lowbrow Customs Motor Company Solid Brass Shifter Peg for Harleys
10 reviews $45.76

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

Lowbrow Customs Lowbrow Customs Springer Lil Speedies Handlebars - 1 inch - Chrome
2 reviews $202.45

Gasbox Tall Chopper Bolt On Sissy Bar - 2006-2017 Dyna
21 reviews $134.95

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

Cycle Standard 41MM Chrome Fork Tubes 1977-1984 Harley-Davidson FL/FLH - 26-7/8 inch - 6 Over
$200.81

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

Dynatek Performance Electronics Single Fire Ignition and Coil Kit - 1971-2003 Harley-Davidson XL 1970-99 Big Twins
$399.99

Prism Supply Co. 10 Degree Kickstand Adjustment Plate for Harley-Davidson Jiffy Stands
$49.99

Kibblewhite Precision Machining Heavy Duty Clutch Spring Set - 1966 - 1984 Shovelhead
11 reviews $49.20

Mooneyes MOON Pressure Gauge 0-100 psi
5 reviews $49.00

Colony #2763-5 Intake Manifold Nipple Installation Tool 1940-1954 Harley-Davidson OHV 74's 1953-1956 K/KH - Parkerized
$97.90

Gasbox 35mm Harley-Davidson Narrow Glide Headlight Mount - Tumbled Stainless
14 reviews $29.95

Cycle Electric Alternator Kit CE-22ANBR for 1970-1998 Harley-Davidson Big Twins With No Battery
$388.34 $415.70

LePera Bare Bones Solo Seat - Pleated - fits 1984-1999 Harley-Davidson Softail
$387.00

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

Gasbox Evo Sportster CV Carburetor Support Bracket - 1991-2006 Harley-Davidson Sportsters - Tumbled Aluminum
26 reviews $34.95

Cycle Standard Bobbed Rear Fender With 1973-Up Light Mount for 1984-1999 Harley-Davidson Softail
4 reviews $191.90

Cycle Standard Screw-In Harley Stock Style Vented Gas Cap - 1982-1995 - Chrome
$29.43

V-Twin Manufacturing Foot Clutch Release Arm 1936-1964 Harley-Davidson Big Twin OEM# 3705136
$42.35

Lowbrow Customs Belt To Chain Conversion Kit 1984-1994 Harley-Davidson Softail - Black Sprocket
$188.99

Mooneyes 4 quart Traditional Chopper Oil Tank for Harley-Davidson Choppers
6 reviews $375.00

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

Lowbrow Customs Dished Screw-In Gas Cap for Harley-Davidson 1996 & later - Aluminum
4 reviews $53.41

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

Drag Specialties High Performance Starter Solenoid 1965-1984 Harley-Davidson Big Twin 4 Speed 1967-1980 XL 1984-1988FXST/FLST 1985-1986 FXWG/FXSB
3 reviews $91.13

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Left Hand Outlet
24 reviews $40.36

Cycle Electric Regulator CE-540L for use on 12v Harley-Davidson Generators
22 reviews $181.55 $194.34

Cannonball Extended Crossover Shaft For Use With Stealthstarter Electric Starter Kit Rigid Frame 4 Speed Harley-Davidson Big Twins
$90.61

Colony #9424-8 Cylinder Base Stud Set 1985-1999 Harley-Davidson Big Twin Evo
$90.20

Hawg Supply Quick-Pull Clutch Cable Bracket V2.0 For Harley-Davidson Ratchet Top 4 Speed Transmissions
1 review $89.99

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

Gasbox Big Twin 4 Speed Oil Filter Mounting Bracket
$59.95

Autolite Spark Plug- 1975-1981 Shovelhead & Evo Big Twins - Manufacturer Part #4265
14 reviews $7.70

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

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

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

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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