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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Drag Specialties 4-1/2 inch Pullback Handlebar Riser Set - Black
$133.85

Drag Specialties Wheel Bearings and Races - Replaces Harley-Davidson OEM #9052
3 reviews $26.60

Colony #3254-6 Exhaust Pipe Locking Bolt Mounting Kit 1966-1984 Harley-Davidson Shovelheads - Zinc Plated
14 reviews $22.00

Lowbrow Customs Bolt On 3/4 inch Ignition Key Switch Bracket for Harley-Davidson Four Speed Transmissions - Tumbled Stainless
13 reviews $23.97

V-Twin Manufacturing Forged Floorboard Tab Set for 1-1/8 inch Tubing
$65.87

Drag Specialties Clutch Cable OEM #38618-68C Harley-Davidson 4 Speed Big Twin 1968-1986 - 60" Long
$65.87

Koyo Bearings Neck Post Bearing & Race Set Made in Japan
$21.95

Cycle Standard Transmission Sprocket .75" Offset - 24 Tooth - 1991-2006 Harley-Davidson XL 1986-2006 Big Twin 5-Speed
$65.74

Cycle Standard 39mm Fork Boot Gaiter Set for Harley Sportster's Front Forks
32 reviews $43.71

Cycle Standard Oil Filter OEM# 63840-53 for Harley-Davidson Big Twins with Filter In Tank
9 reviews $8.18

Lowbrow Customs Throttle Housing 1996 & up Harley Push-In Dual Cable - Brass - 1 inch
5 reviews $128.53

Lowbrow Customs Finned Thread-In Gas Cap for Harley-Davidson 1996 & later - Polished
35 reviews $51.28

Airspeed Cycles High Rise Riserless Tracker Handlebars - 1 inch - Stainless Steel
1 review $255.00

Airspeed Cycles Riserless Tracker Handlebars - 1 inch - Stainless Steel
$255.00

Hawthorn Co. Cycles Battery Box 4L-BS w/ Breaker Mount & OEM Horseshoe Tank Adapter Plate
$85.00

Cycle Standard Harley-Davidson Shifter Peg - Replaces OEM #34611-65
54 reviews $6.88

Lowbrow Customs Competition Screw-In Gas Cap for Harley-Davidson 1996 & later - Polished
40 reviews $42.30 $51.64

Cycle Standard Chrome Rear Axle Kit 1980-2001 Harley-Davidson FL FLH FLT 82-94 FXR 86-06 FLST
2 reviews $62.99

Colony #3449-10 Disc Rear Rotor To Hub Screw & Nut Kit 1979-1991 Harley-Davidson FX/XL 1981-1984 FL Spoke or Cast Wheel - Zinc Plated
4 reviews $15.73

Colony #2548-8 Clutch Hub Nut Kit 1941-1984 Harley-Davidson Big Twin - Parkerized
16 reviews $25.00

Fast Eddy Co. No. 19 WA Sprocket Shaft Bearing Installer with Seal Adapter 1955-2002 Harley Big-Twin
3 reviews $249.95

Bare Knuckle Performance Antihero Stainless Steel Rear Brake Rotor - 11.5 inches Pre-1999 Harley-Davidson Models
$249.00

Colony #3019-8 Head Bolt Set 12 Point 1985-1991 Harley-Davidson Big Twin 1986-1992 XL - Zinc Plated
2 reviews $83.00

Lowbrow Customs Blade Levers - Black - 1996 - 2003 Harley Davidson Sportsters and 1996 - 2017 Dyna / Softail / Touring Models
56 reviews $41.37

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

Lowbrow Customs Blade Levers - Polished - 1996 - 2003 Harley Davidson Sportsters and 1996 - 2017 Dyna / Softail / Touring Models
30 reviews $41.14

V-Factor Motorcycle Parts 18 Spoke Black Stainless Steel Brake Rotor - 11.5 inches - Front - Replaces Harley-Davidson OEM #44136-92/44156-00
2 reviews $81.95

Lowbrow Customs Motor Company Aluminum Shifter Peg for Harleys
22 reviews $18.89

Lowbrow Customs 39mm Fork Shrouds - Raw Steel - Harley-Davidson Sportsters
20 reviews $122.58

Gasbox Coil and Ignition Switch Universal Mount - Harley Davidson Big Twin 1948-1984
17 reviews $34.95

Colony #9629-2 Rear Chain Adjusters - 1936-1972 Harley-Davidsons Knucklehead/Panhead/Shovelhead - Parkerized
4 reviews $15.29

Fork Co., Ltd British Wide and Narrow Handlebars - Stainless Steel
$243.89

Lowbrow Customs Domed Screw-In Gas Cap for Harley-Davidson 1996 & later - Aluminum
12 reviews $48.55

Lowbrow Customs Primary Drive Clutch Locking Tool for Harley-Davidson Big Twins 1940-84
23 reviews $34.67

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

Colony #2349-6 Handlebar Heavy Duty Damper Kit 1973-Up Harley-Davidson Big Twin & Sportster
17 reviews $20.04

Cycle Standard Clutch Plate Kit 1968-1984 Harley-Davidson Big Twins
$80.10

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

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

Gasbox Heavy Duty Universal 4 Speed Transmission Mounting Plate
$59.95

Lowbrow Customs FiltroMax Belt Drive Mounting Bracket
11 reviews $23.77

Cycle Standard Bayonet / Cam Harley Style Vented 2.5" Gas Cap - Chrome
13 reviews $33.95

Cycle Standard Stock Style Chrome Kicker Lever - 1936 - 1977 Harley Big Twin and 1957 - 1976 XL
5 reviews $47.32

Cycle Standard 5 Post Ignition Key Switch Replaces Harley-Davidson OEM #71500-36T - Black Bezel
10 reviews $47.19

Lowbrow Customs Fish Scale Master Cylinder Cover - 1982 - 2005 Harley-Davidson #45004-85
18 reviews $29.40

Airspeed Cycles Rabbit Ears Handlebars - 12 inch Rise - 1 inch - Stainless Steel
$235.00

Airspeed Cycles T-Bar Handlebars - 8 inch Rise - 1 inch - Stainless Steel
$235.00

Colony #9213-4 Upper Inner Pushrod Covers 1979-Up Harley-Davidson Shovelhead 1984-Up Evo 1986-1990 XL
1 review $39.11

Cycle Standard HD Factory Style Grips - Black 1 inch OEM #56206-81A
21 reviews $18.01

Cycle Craft #46 Pilot Jet - 1988-2006 Keihin CV Carburetor
3 reviews $5.99

S&S Cycle H-Grind Camshaft - 1948-1969 Harley-Davidson Big Twin
1 review $230.36 $255.95

Colony #8221-20 Head Bolt Kit 1948-Up Harley-Davidson Panhead/Shovelhead - Chrome Plated
8 reviews $76.76

Drag Specialties Clutch Cable OEM #38606-87A Harley-Davidson FXST 1987-1999 +6 inch Extended
$76.17

Fast Eddy Co. No. 2 Pinion Nut Socket 1954-1992 Harley Big Twins
17 reviews $37.95

Cycle Standard 12" Chrome Shocks With Chrome Spring - Stock Length - 1973-1984 Harley-Davidson FX/FXE 1972-1984 FL
$227.10

Andrews J-Grind Camshaft - L1977-1984 Harley-Davidson Shovelhead
$226.76 $251.95

Cycle Standard Headlight Visor - 5-3/4" Headlight - Black - Replaces OEM #69735-05
3 reviews $37.64

Colony #3667-19 Primary Cover Screw Kit 1989-2006 Harley-Davidson Softail 1991-2005 Dyna - CAD Plated
3 reviews $25.08

Colony #2454-36 Pushrod Cover Complete Kit Billet Alloy 1984-Up Harley-Davidson Big Twin Evo - Chrome Plated
$225.17

After Hours Choppers Stainless Steel Ratchet Top Shifter - 15 Degree Lay Back - Raw
$225.00

Gasbox Front Exhaust Pipe 1966-1969 Harley-Davidson Shovelhead - Chrome - OEM #65443-66
2 reviews $75.00

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

Gasbox Strong Arm Top Engine Mount For Early Big Twin Engines In Gasbox Frames
$74.95

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

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 34-1/4 inch - 10 Over
$222.77

Colony #8005-12 Electrical Terminal Box Assembly1948-1969 Harley-Davidson Big Twins & 45's
2 reviews $55.04

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

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 Pursuit Shifter Peg for Harleys - Black Aluminum
44 reviews $31.10

Colony #8302 PARK Complete Stock Hardware Kit - 1948-1957 Harley-Davidson Panhead - Parkerized
1 review $216.35

Colony #8302 CAD Complete Stock Hardware Kit - 1948-1957 Harley-Davidson Panhead - CAD Plated
2 reviews $216.35

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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