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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Andrews EV46 Camshaft - 1984-1999 Harley-Davidson Big Twin
$226.76 $251.95

Andrews N4 Camshafts - 1991-1999 Harley-Davidson Sportster XL 1994-99 Buell
$454.46 $504.95

S&S Cycle 500 Camshafts - 1991-2021 Harley-Davidson Sportster XL
$575.96 $639.95

S&S Cycle 482 Camshafts - 1986-2020 Harley-Davidson Sportster XL
$575.96 $639.95

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

James Gaskets Cam Change Gasket Kit - 1993-99 Harley-Davidson 80 inch Big Twin
$30.10

James Gaskets Cam Change Gasket Kit with Metal Cam Cover Gasket - 1993-99 Harley-Davidson 80 inch Big Twin
$36.14

S&S Cycle Super E T-Style O-Ring Manifold 1955-65 Harley-Davidson Big Twin
$110.66 $122.95

S&S Cycle Super E Carburetor Kit 1955-65 Harley-Davidson O-Ring Panhead
$716.36 $795.95

S&S Cycle Super E Carburetor Kit 1984-1992 Harley-Davidson Big Twin
1 review $806.36 $895.95

Prism Supply Co. Sling Shot Mechanical Brake Pedal Kit - Harley-Davidson Big Twin - Stainless Steel
$199.99

Progressive Suspension Replacement Fork Springs 1999-05 Harley-Davidson FXD FXDL FXDC
1 review $123.95

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

Cannonball Axle for Cannonball Leaf Spring Front Fork - Star Hub
$125.84

Cannonball Axle for Cannonball Leaf Spring Front Fork - Cannonball Wheels
$125.84

Cannonball Leaf Spring Inline Front Fork
$2,704.30

Cycle Standard 41mm Fork Seal Rebuild Kit - 1949-1977 Harley-Davidson FL
$19.43

Cycle Standard 39mm Fork Seal Rebuild Kit - L1987-2022 Harley-Davidson XL Models
3 reviews $23.72

Cycle Standard 35mm Fork Seal Rebuild Kit - Showa Forks - 1975-83 Harley-Davidson XL FX FXR
4 reviews $21.08

Cycle Standard 35mm Fork Seal Rebuild Kit - Kayaba Forks - 1973-76 Harley-Davidson XL FX
1 review $12.21

Colony #3508-2 Rear Brake Rod Clevis 1915-1929 Harley-Davidson Twins - Parkerized
$20.90

Colony #3546-2 Handlebar Grips End Plugs 1953-1961 Harley-Davidson K/KH/XL/45's/FL - CAD Plated
$12.10

Colony #3569-6 Inner Primary Mount Kit 1985-2005 Harley-Davidson Big Twins - Zinc Plated
$13.31

Colony #3674-10 Sprocket Bolts Knurled 1979-1990 Harley-Davidson XL 1993-1998 Big Twins - Chrome Plated
$24.01

Colony #3692-1 Valve Spring Lifter 1939-1948 Harley-Davidson UL/ULH Sidevalves
$30.80

S&S Cycle V80 Series Complete Assembled Evo Long Block Engine - Natural
$7,519.95 $7,999.95

S&S Cycle V80 Series Complete Assembled Evo Engine - Wrinkle Black
$8,083.95 $8,599.95

S&S Cycle SH93 S&S Shovelhead Engine - Complete Harley Big Twin Motor
$9,399.95 $9,999.95

S&S Cycle S&S P93 Series Complete Assembled Panhead Engine
1 review $10,806.19 $11,495.95

Gasbox Peg Mount License Plate Bracket - 1984-2017 Harley-Davidson Softail - Vertical or Horizontal
8 reviews $49.95

Gasbox Front Exhaust Pipe 1948-1965 Harley-Davidson Panhead - Bare Steel - OEM #65440-48
$60.00

Cycle Standard Throttle Idle Cable OEM #56355-96A Harley Dyna 1996-2008
1 review $34.55

Cycle Standard Throttle Cable OEM #56356-96A Harley Dyna 1996-2008
4 reviews $35.11

Drag Specialties Replacement Starter - 1990-2006 Harley-Davidson Big Twin/Twin Cam - Black
1 review $426.48

Drag Specialties 5 ohm Dual Outlet Coil Single-Fire for Dual Plug Heads
$80.03

Dynatek Performance Electronics 5 ohm Single Coils - Pair
$216.65

Drag Specialties Oil Filter for 1980-1985 Harley-Davidson Sportster and Big Twin Models - Chrome - OEM #63782-80
4 reviews $12.31

Cycle Standard 39MM Chrome Fork Tubes - 31 inch - 6 Over
19 reviews $250.26

Mid-USA Rear Master Cylinder - 1958-1972 Harley-Davidson Big Twin - Replaces OEM #41761-58 41761-78
5 reviews $69.95

LePera Kickflip Seat - Pleated - fits 1996-2003 Harley-Davidson Dyna
$548.00

LePera Kickflip Seat - Diamond - fits 1996-2003 Harley-Davidson Dyna
$548.00

Mullins Chain Drive Richmond Spool Hub - Black
$299.95

Cannonball Intake Manifold for Bendix/Keihin Butterfly Carburetors Harley-Davidson Flatheads U and WLDR 1937 & Up
$204.69

Cannonball Intake Manifold for Bendix/Keihin Butterfly Carburetors 1940-54 Harley-Davidson OHV Models
$240.21

Cannonball Oil Pump 1936-52 Harley-Davidson Knucklehead Panhead - Replaces OEM #26201-41 26201-48
1 review $1,052.69

Cannonball Tappet Guides 1936-47 Harley-Davidson Knucklehead - Replaces OEM #18610-36 18600-36
1 review $1,125.79

Cannonball Harley Flathead Engine Crankcase 1937-1948 - Replaces OEM #24515-37
$3,652.49

Cannonball Crankcases 1948-1952 Harley-Davidson Panhead - Replaces OEM #24520-48
$4,265.75

Cannonball Crankcases 1941-1947 Harley-Davidson Knucklehead - Replaces OEM #24520-41
1 review $4,295.10

Colony #3548-1 Seat Clevis Pin Spring for Short T-bar 1943-1952 Harley-Davidson WLA/WLC - Parkerized
$8.47

Cycle Standard Harley-Davidson FX XL Style LED Turn Signal - Replaces OEM #68404-86
1 review $34.30

Burly Brand Slammer Suspension Kit - 2006- 2017 Harley-Davidson Dyna FXD - Black
$387.86 $430.95

Burly Brand Slammer Suspension Kit - 2006 - 2017 Harley-Davidson Dyna FXD - Chrome
$387.86 $430.95

Colony #3542-1 Speedometer Cable Clip 1954-1965 Harley-Davidson Models - Parkerized
$6.05

Colony #3540-1 Circuit Breaker Timer Wire Cable Clip 1941-1948 Harley-Davidson Big Twins - Parkerized
$6.05

Colony #3390-4 Handlebar Clamp Allen Screw Kit 1982-Up Harley-Davidson FX/XL
3 reviews $6.05

Colony #3518-2 Front Brake Lever Clevis Pin 1952-1972 Harley-Davidson K/KH/XL 1971-1972 FX 1951-1957 Servi-car - CAD Plated
$7.57

Colony #3535-6 Timing Cover Screw Kit 1970-1992 Harley-Davidson Shovelhead & Evolution
1 review $7.74

Colony #3533-3 Front Brake Cable Clip 1950-1971 Harley-Davidson FL/FLH - CAD Plated
2 reviews $16.34

Colony #3543-6 Gas Tank Name Plate Gaskets 1940-1946 Harley-Davidsons
$17.25

Colony #3534-22 Rear Fender Rail Screw & Acorn Nut Kit 1980-1986 Harley-Davidson FXWG - Chrome Plated
$29.70

Colony #3530-6 Spotlight Clamp Kit 1938-1961 Harley-Davidson Models- Chrome Plated
$35.75

Colony #3539-5 Fork Bracket Bolt & Clip Kit 1950-1957 Harley-Davidson OHV - Parkerized
$56.65

Colony #3423-1 Oversized Motor Case Drain Plug Oil Pump Body Plug 7/16-20 1936-1970 Harley-Davidson Big Twin Cases 1937-Up 45 Cases 1968-1984 Oil Pump Body - Parkerized
$5.50

Colony #3422-1 Oversized Motor Case Drain Plug Oil Pump Body Plug 7/16-20 1936-1970 Harley-Davidson Big Twin Cases 1937-Up 45 Cases 1968-1984 Oil Pump Body - Chrome Plated
$6.60

Colony #3500-1 Oil Tank Line Connector Fitting 1950-1964 Harley-Davidson Big Twins - CAD Plated
$8.47

Colony #3497-3 Shift Rod & Shaft Lever Screw Kit 1951-1964 Harley-Davidson FL Foot Gear Shift Rod 1951-E1979 FL Hand Gear Shift Rod - CAD Plated
$9.68

Colony #3496-10 Manifold Inlet Nipples 1948-1954 Harley-Davidson OHV
$19.53

Colony #3491-2 Horn Adjusting Screw Kit 1931-1957 Delco-Remy Horns - Parkerized
$9.68

Colony #3486-3 Brake Operating Shaft Washer Kit 1936-1948 Harley-Davidson Big Twin 1936-1957 Sidecars 1941-1957 Servi-cars - Parkerized
$10.89

Colony #3464-1 Choke Lever 1938-1965 Harley-Davidson Big Twins - Parkerized
$32.99

Colony #3455-1 Self Tapping Transmission Filler Plug 1936-1957 Harley-Davidson Big Twin - Parkerized
$15.40

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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