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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Cycle Standard Chrome Headlight Eyebrow Visor for Harley Sportster FX FX FXR - with Indicator Light Holes
$42.25

Colony #3194-1 Harley Primary Drain Plug - Zinc Plated - Big Twin & Softail - 1987-2003 & 1993-2003
16 reviews $9.68

Drag Specialties Swing Arm Bearing Kit 1958-86 Harley-Davidson FX/FXWG/FLH (except Softail, FXR, FLT)
1 review $41.91

Cycle Standard 8-1/2 inch Pullback Handlebar Riser Set - Black
$125.27

Cycle Standard Headlight Visor - 5-3/4" Headlight - Chrome - Replaces OEM #69735-05
$41.40

Drag Specialties Sintered Front Brake Pads 84-99 H-D XL 84-94 FXR 91-98 Dyna 84-99 FLT/FLHT/FLHS/FLHR/FLTR/FXST/FLST/FXWG 88-99 FXSTS
$41.18

Cycle Standard 1/4-20 inch Fender Seat Mount Nut Kit - Zinc Plated
2 reviews $12.23

Lowbrow Customs Rocker Box Oil Pressure Gauge Adapter Fitting - Chrome - 1966 - 1970 Harley-Davidson Shovelhead, 1957 - 1970 Sportster
2 reviews $30.51

James Gaskets Top End Gasket Kit 1948-1965 Harley-Davidson Panhead
2 reviews $40.59

Cycle Electric Stator CE-9902 for 1999-2003 Dyna and 2000 Softail Harley-Davidsons OEM #29951-99
7 reviews $121.18 $129.72

#2233-12 Rocker Arm Shaft Washer O-Ring Kit Harley Shovelhead 66-84 — Colony #2233-12 Rocker Arm Shaft Washer O-Ring Kit 1966-1984 Harley-Davidson Shovelhead 1957-1984 XL
23 reviews $6.05

Colony #2442-8 High Performance Cylinder Studs 1983-1999 Harley-Davidson Big Twin Evo
$120.18

Hawg Supply Linkert Carburetor to S&S Manifold Adapter Plate
1 review $60.00

Unity Manufacturing Two Bolt Intake Leak Tester
5 reviews $30.00

Gasbox Front Pipe Exhaust Clamp 2 Piece Set 1937-1969 Harley-Davidson EL FL - Parkerized OEM #65512-37
3 reviews $20.00

Gasbox Y-Pipe Exhaust Pipe 1941-1957 Factory Rigid Harley-Davidson Models - Bare Steel OEM #65505-41
2 reviews $60.00

LCFabrications CV Carburetor Cap
1 review $59.99

Fast Eddy Co. No. 56 Intake Leak Tester - 4 Bolt Style
1 review $59.95

Drag Specialties SAE 80W-90 High-Performance Mineral Transmission Oil for Big Twins - 1 quart
$14.95

Cycle Standard Bayonet / Cam Harley Style Non-Vented 2" Gas Cap - Chrome
$14.93

Drag Specialties Shifter Linkage - Chrome - 1982-94 99-00 Harley-Davidson FXR
$29.63

Cycle Standard Screw-In Harley Stock Style Vented Gas Cap - 1982-1995 - Black
$23.51

Colony #8714-20 Big Bore Headbolt & Washer Kit 1949-Up Harley-Davidson Panhead/Shovelhead - Chrome Plated
2 reviews $58.66

Bates Springer Riser Studs M20 x 1.5 x 1/2-13 inch thread
3 reviews $39.06

Cycle Standard Oil Filter for Harley-Davidson Sportster and Big Twin Models - Black - OEM #63782-80
1 review $14.62

Cycle Standard Replacement Oil Tank Cap Harley-Davidson OEM #62644-84T
7 reviews $14.54

Colony #3267-5 Disc Front Brake Rotor to Hub Torx Screw Set 1984-Up Harley-Davidson FX/FXR/XL/FLT - Zinc Plated
6 reviews $9.68

Colony #8793-5 Disc Front Brake Rotor to Hub Torx Screw Kit 1984-Up FX/FXR/FLT/XL - Chrome Plated
11 reviews $14.52

Lowbrow Customs 39mm Low Profile Fork Caps - Black Anodized Aluminum

12 $58.02

Cycle Standard Shift Lever - 1997-2013 Harley-Davidson Big Twins - Chrome - OEM #33849-97
5 reviews $38.37

Colony #8164-19 Upper And Lower Motor Mount Kit 1936-1969 Harley-Davidson Big Twin OHV - Chrome Plated
5 reviews $57.53

James Gaskets Fork Seal 49MM Rebuild Kit 2006-Up Harley-Davidson FXD/FLD
4 reviews $28.29

Cycle Standard Handlebar Clamp - Smooth - Black
$28.12

Colony #8231-26 Transmission Mounting Kit 1936-1964 Harley-Davidson Big Twin - Chrome Plated
1 review $56.18

Drag Specialties Clutch Cable Harley-Davidson 4 Speed Big Twin 1968-86 - 50" Long
3 reviews $56.13

Motone Screw-In Billet Adapter for 2.5" Monza Gas Cap for 1996 & later Harley-Davidson
5 reviews $56.08 $69.64

Cycle Standard Rocker Box D-rings - Polished - 1948-65 Harley-Davidson Panhead
$111.74

The Rough Trade 2-1/8" Wrench for Harley-Davidson Large Port Knucklehead & Panhead Intake
$22.31

Cycle Standard Wagner Lockheed Type Rear Disc Brake Master Cylinder - Chrome - 1973-E1979 Harley-Davidson FL/FX
1 review $110.07

Colony #3308-6 Locking Exhaust Bolt Kit 1966-1984 Harley-Davidson Shovelhead
13 reviews $22.00

Colony #3142-2 Top Plugs For Classic Springer Forks - Aluminum — Colony #3142-2 Aluminum Top Plugs For Classic Harley-Davidson Springer Forks
1 review $22.00

Bad&G Customs Harley Dyna Battery Cover Bag - Bolt-On Storage for 2006 and Up Models
23 reviews $110.00

Hawg Supply Honeycomb Kicker Pedal
$109.99

Colony #2011-8 Head Bolt Set 12 Point 1985-1991 Harley-Davidson Big Twin 1986-1992 XL - Chrome Plated
2 reviews $109.99

Fast Eddy Co. No. 61 No. Star Hub Brake Lug Tool
$54.95

Cycle Standard Clutch Cable OEM #38602-92 Harley Dyna 1992-2005
$54.73

The Cyclery Bearing Adjuster Nut Socket for Springer Forks
$108.50

Samwel Supplies Reproduction Bearing Adjuster Nuts for Springer Forks - Parkerized
8 reviews $54.19

Colony #2989-3 Crankcase Breather Stud Pipe Assembly 1948-1957 Harley-Davidson Panhead - Parkerized
3 reviews $36.00

Cycle Standard Speedometer Mounting Gasket for Harley-Davidson 1989-1991 Sportster XL Models and 1987 - 1994 FXR OEM #67104-83
30 reviews $17.93

Cycle Standard Screw-in Style Gas Cap Gasket replaces Harley-Davidson OEM #61109-85
24 reviews $4.13

Cycle Standard Harley Shifter Shaft Lever OEM #33709-82A
17 reviews $21.38

Cycle Standard 41mm Fork Seal Rebuild Kit - 1949-1977 Harley-Davidson FL
$21.37

Cycle Standard Brake Pedal Pad 1965-Up Harley-Davidson FL OEM #36956-65TA
$26.71

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

Lowbrow Customs Finish Line Foot Peg Set - Black Aluminum
13 reviews $105.39

Colony #9627-19 Upper & Lower Motor Mount Kit 1936-1969 Harley-Davidson Big Twin - Parkerized
3 reviews $52.45

Lowbrow Customs Air Cleaner Backplate Gasket for Super E / G Carburetor
45 reviews $2.22

Cycle Standard Stock Style Chrome Kicker Lever - 1936 - 1977 Harley Big Twin and 1957 - 1976 XL
5 reviews $52.05

Lowbrow Customs Motor Company Aluminum Shifter Peg for Harleys
23 reviews $20.78

Colony #3744-1 Stem Crown Nut Kit 1936-1948 Harley-Davidson Big Twin Springer
$51.70

Colony #3014-34 Stock Fastener Motor Case Kit 1948-1964 Harley-Davidson Panhead - Parkerized
2 reviews $51.70

Lowbrow Customs Pursuit Shifter Peg for Harleys - Black Aluminum
44 reviews $34.21

Cycle Standard Engine Stabilizer Link - Chrome - 1995-2017 Harley-Davidson Dyna
$101.74

Colony #2464-5 Brake Drum Wheel Mounting Bolt Set - 1936-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead - Parkerized
4 reviews $25.30

Lowbrow Customs Lowbrow Customs Spark Plug Wire Set 1989-1999 Harley-Davidson FXST/FLST 1991-1998 FXD
1 review $25.29

Colony #8608-36 Rocker Box Nut Kit 1966-1983 Harley-Davidson Shovelhead - Chrome Plated
2 reviews $20.11

Colony #9897-6 Grease Fitting Zerk Type 1936-1984 Harley-Davidson - Chrome Plated
2 reviews $14.34

Unity Manufacturing Clutch Retaining Washer - 1936-1984 Harley-Davidson
$12.50

Unity Manufacturing Clutch Lockup Tool - BDL Clutches
$50.00

Unity Manufacturing Clutch Lockup Tool - 1990-1997 Harley-Davidson Big Twin 1991-2022 XL
$50.00

Colony #3144-13 Transmission Kicker Cover Stud Kit 1936-84 Harley Davidson Big twins — Colony #3144-13 Transmission Kicker Cover Stud Kit 1936-1984 Harley-Davidson Big Twins - CAD Plated
3 reviews $25.00

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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