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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Lowbrow Customs 60 psi Oil Pressure Gauge - White Face
22 reviews $40.25

Drag Specialties Wheel Bearings and Races for Harley-Davidson - OEM #9267 Replacement
$35.31

Cycle Standard 41mm Fork Seal Rebuild Kit - 1984-2013 Harley-Davidson FLT 1984-86 FXWG 1984-17 Softail 2012-16 FLD
$16.97

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

V-Twin Manufacturing Exhaust Bracket For MCM Drag Pipes 1971-1984 Harley-Davidson Shovelhead
$58.23

Cycle Standard Front Brake Master Cylinder Assembly - Black - Single Disc 1996-2017 Models (EXCEPT 15-17 Softail, 08-17 Dressers, Trike, 04-17 XL)
$180.04

Cycle Standard S&S Super E/G Carburetor Adapter for CV Air Cleaners - Chrome
$29.03

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

Cycle Standard Popsicle Kicker Pedal with Rubber for 1977 & earlier Harley-Davidson Kicker Arms Replaces OEM 33175-16A
18 reviews $22.85

Cycle Standard Foot Peg Chrome Clevis Mounts
18 reviews $26.26

V-Twin Manufacturing MCM Slash Cut Drag Pipes 1971-1984 Harley-Davidson Shovelhead - Chrome
1 review $170.14

Diamond Primary Chain 1980-2006 Harley-Davidson FLT/FXR/FXRS/FXRT
$170.06 $188.95

Prism Supply Co. Motor Mount Mid-Pegs for Harley-Davidson Big Twins - Stainless Steel
$84.99

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 26-1/4 inch - 2 Over
$168.11

Lowbrow Customs FiltroMax Big Twin Bracket - Polished
10 reviews $27.79

Lowbrow Customs Lowbrow Customs Springer Buckhorn Handlebars - 1 inch - Chrome
$207.99

Cycle Standard 3 Hole Chrome Derby Cover for 1970-98 Harley-Davidson Big Twins Replaces OEMs 60668-84A 253952-84T
1 review $22.42

Cycle Standard 41MM Chrome Fork Tubes 1949-1976 Harley-Davidson FL - 20 inch - Stock Length
$164.95

Motone Screw-In Billet Gas Cap for 1996 & later Harley-Davidson - Vented - Black
$82.47 $102.31

Cycle Standard 5-1/2 inch Forged Aluminum Handlebar Risers - Chrome
$82.46

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

Cycle Standard Bayonet / Cam Harley Style Vented 2" Gas Cap - Black
29 reviews $16.40

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 24-1/4 inch
$162.55

EBC Brakes Sintered Front Brake Pads 1984-99 H-D FLT/FLHT/FLHR/FLTR 84-99 FXST/FLST 88-06 FXSTS 97-03 FLSTS 05-07 FLSTSC 08-11 FLSTSB
$54.14 $56.31

V-Factor Motorcycle Parts MCM Slash Cut Drag Pipes 1986-2006 Harley-Davidson Softail - Black
$159.99

V-Factor Motorcycle Parts MCM Slash Cut Drag Pipes 1971-1984 Harley-Davidson FX 1981-1982 FXWG - Black
$159.99

Fast Eddy Co. No.26 Cylinder Head Holder - 12MM/14MM Ends
$79.95

Lowbrow Customs Bottom Mount Headlight Bracket - Harley Narrow Glide, Triumph, BSA - Tumbled Stainless
7 reviews $39.62

The Speed Merchant Speedpegs Foot Pegs - Black
$157.46 $174.95

Colony #2313-19 Upper and Lower Motor Mount Bolt Kit 1936-1969 Harley-Davidson Big Twin - Parkerized
1 review $52.45

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

Cycle Standard Ride-On Engine Stablizer Link Kit 1982-94 Harley-Davidson FXR 91-94 Dyna 80-08 Touring
$97.02

Lowbrow Customs 39mm Low Profile Fork Caps - Brass

13 $51.64

Colony #8220-20 Head Bolt Kit 1940-1947 Harley-Davidson Knucklehead - Chrome Plated
$76.76

Colony #8219-20 Head Bolt Kit 1936-1939 Harley-Davidson Knucklehead - Chrome Plated
$76.76

The Speed Merchant Cruiser Foot Pegs - Raw
$152.96 $169.95

The Speed Merchant 39 mm Fork Preload Adjuster - Gold Finish
$152.96 $169.95

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

Colony #9418-19 Transmission Mounting Kit 1965-Early 1977 Harley-Davidson Big Twin - Chrome Plated
3 reviews $37.66

Colony #2428-6 Handlebar Damper Kit 1973-Up Harley-Davidson Big Twin/Sportster
11 reviews $16.70

Hawg Supply "Milled" 4-Speed Clutch Pressure Plate
$74.99

Thrashin Supply Co. Militant Foot Pegs - Black
1 review $149.95

Biltwell AlumiCore Grip Set Dual Cable - Black
4 reviews $149.95

Fast Eddy Co. No. 24 Engine Rotation Socket - 24 Spline for 2007-Up Harley-Davidson Big Twin
$74.95

Gasbox Exhaust Clamp 4 Piece Set 1947 - 1957 Harley-Davidson Panhead - Parkerized OEM # 47-57 CL HDW
$49.95

Fast Eddy Co. No. 32 Tappet Block Alignment Screws - 3 Pack - 1/4-20 Thread
10 reviews $29.95

James Gaskets Primary Cover Gasket 1965-1988 Harley-Davidson Big Twin
$24.91

Burly Brand Narrow Bottom Ape Hanger Handlebars - 1 inch - 12 inch Rise - Black

$148.46 $164.95

Colony #2314-36 Transmission Mounting Kit 1936-1964 Harley-Davidson Big Twin - Parkerized
3 reviews $49.41

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

Colony #8919-19-P Primary Cover Smooth Allen Kit 1989-2006 Harley-Davidson Softail 1991-2005 Dyna - Chrome Plated
$48.73

Colony #9654-4 Oversize Transmission Case Bottom Stud Kit 1936-1983 Harley-Davidson Big Twins - Parkerized
1 review $20.70

Cycle Standard Clutch Cable OEM 38602-92 Harley Dyna 1992-2005
$48.71

Cycle Standard Deluxe Black Harley-Davidson Brake Light Switch - Knucklehead, Panhead, Flathead (1937-1957) OEM #72004-39
17 reviews $28.78

Cycle Standard Transmission Mounting Plate 1986-1999 Harley-Davidson Softail - Black
$31.20

Colony #7800-8 Acorn Bolt Transmission Mounting Plate to Frame Kit 1936-1986 Harley-Davidson Big Twins & 4 Speed - Chrome Plated
3 reviews $23.91

Cycle Standard 39mm Fork Seal Rebuild Kit - Showa Forks - 1988-2020 Harley-Davidson XL 1988-94 FXR 1987-2005 Dyna Models
5 reviews $12.95

Lowbrow Customs Cast Aluminum Knurled Oil Tank Plug - Semi Polished
2 reviews $20.87

Colony #2091-12 Replacement Pushrod Covers Late 1979-1984 Harley-Davidson Shovelhead - Chrome Plated
2 reviews $70.39

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

Gasbox Front Exhaust Pipe 1948-1965 Harley-Davidson Panhead - Chrome - OEM# 65440-48
2 reviews $70.00

Progressive Suspension Heavy-Duty Fork Springs 1999-2005 Harley-Davidson FXDWG
$139.95

Fast Eddy Co. No. 37 Socket Tool for Oil Pump and Tappet Screen Plugs
6 reviews $27.95

Colony #8623-2 Seat Clevis Pin & Spring 1929-Up Harley-Davidson
5 reviews $13.94

Cycle Standard Domed Slim Chrome Screw-In Harley Style Gas Cap 1996 & up
15 reviews $25.00

Cycle Standard Nose Cone Cam Gear Cover - Black - 1993-99 Harley-Davidson Big Twin
$174.03

Lowbrow Customs Fish Scale Master Cylinder Cover - 1982 - 2005 Harley-Davidson #45004-85
17 reviews $28.00

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

Colony #2625-30 Rear Fender Support Mounting Kit 1958-1980 Harley-Davidson FL/FLH - CAD Plated
5 reviews $27.50

Cycle Standard Rocker Box Covers - Chrome - 1948-65 Harley-Davidson Panhead
2 reviews $136.30

Bates Linkert 3-Bolt Carb Throttle Conversion Kit 1936-39 Harley-Davidson Knucklehead and All Flatheads
1 review $68.02

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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