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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Colony #2959-2 Front Brake Shackle Bushing Install Tool 1930-1948 Harley-Davidson Big Twins/45's
2 reviews $22.00

Colony #2550-2 Clutch Foot Lever Bracket Bushing Install Tool 1936-1978 Harley-Davidson Big Twins 1938-1952 45's
$20.00

Colony #2650-13 Top Motor Mount Hardware 1957-E1972 Harley-Davidson XL 1952-1972 Big Twin - Parkerized
1 review $21.78

Colony #9762-16-P Oil Pump Mounting Kit 1992-Up Harley-Davidson Big Twins - Chrome Plated
$18.62

Colony #2551-2 Clutch Foot Lever Bracket Bushings 1936-1978 Harley-Davidson Big Twins 1938-1952 45's
$12.10

Colony #2320-1 Transmission Mainshaft Lock Nut 1992-Up Harley-Davidson Big Twin/Sportsters
$19.80

Colony #9908-4 Fork Slider Drain Screws 1952-1972 Harley-Davidson K/XL/FX - CAD Plated
$10.76

Colony #2495-11 Front Safety Guard Mounting Kit 1958-1969 Harley-Davidson FL - CAD Plated
$8.35

Colony #1012 Complete Show Bike Kit Knurled Allen Hardware 1970-1975 Harley-Davidson Shovelhead - Chrome Plated
$186.19

Colony #1007 Complete Show Bike Kit Knurled Allen Hardware 1984-1986 Harley-Davidson Evo 4 Speed - Chrome Plated
$187.61

Colony #1011 Complete Show Bike Kit Allen Knurled Hardware 1976-1977 Harley-Davidson Shovelhead - Chrome Plated
$180.49

Colony #1011-P Complete Show Bike Kit Smooth Allen Hardware 1976-1977 Harley-Davidson Shovelhead - Chrome Plated
$213.18

Colony #1009-P Complete Show Bike Kit Smooth Allen Hardware 1979-1984 Harley-Davidson FLT 5 Speed - Chrome Plated
$213.18

Colony #3013-34 Stock Fastener Motor Case Kit 1940-1947 Harley-Davidson Knucklehead - Parkerized
$51.70

Colony #3054-16 Ride Control Side Plate Stud Kit 1936-1947 Harley-Davidson WL/FL Springer - Parkerized
2 reviews $43.99

Colony #7910 Complete Show Bike Kit Acorn Hardware 1970-1975 Harley-Davidson Shovelhead - Chrome Plated
$383.08

Colony #7908 Complete Show Bike Kit Acorn Hardware 1958-1965 Harley-Davidson Panhead - Chrome Plated
$383.08

Colony #3073-16 Inner Primary Chain Guard Kit 1936-1944 Harley-Davidson Big Twins - Parkerized
1 review $29.04

Colony #3043-18 Jiffy Stand and Foot Clutch Lever 1936-1978 Harley-Davidson Big Twins - Parkerized
$26.40

Colony #3074-8 Caliper Mounting Bolts 1973-1980 Harley-Davidson Big Twin Rear 1972-1980 Front - Zinc Plated
5 reviews $19.36

Colony #3046-3 Rocker Box Oil Feed Line Fittings 1942-1947 Harley-Davidson Knucklehead - Parkerized
$19.51

Colony #3023-34 Rocker Arm Cover Screw Kit 1939-1947 Harley-Davidson Knucklehead - Chrome Plated
1 review $18.51

Colony #3021-2 Kick Starter Pedal Rubber Set 1917-Up Harley-Davidson OEM #2092-17
$18.15

Colony #3067-30 Primary Cover Screw Kit Harley-Davidson 1950-1955 Big Twins - CAD Plated
2 reviews $25.00

Colony #3038-18 Gas Tank Mounting Kit 1937-1975 Harley-Davidson Big Twins 1971-1972 FX - Parkerized
1 review $17.42

Colony #3005-2 Transmission Mainshaft Locknut 1915-1935 Harley-Davidson Big Twins
$17.60

Colony #3063-2 Hand Clutch Adjusting Screw 1952-1967 Harley-Davidson FL/FLH - CAD Plated
$13.31

Colony #1019-P Complete Show Bike Kit Smooth Allen Hardware 1987-1991 Harley-Davidson FLT/FXR - Chrome Plated
$234.50

Colony #3007-4 Exhaust Spacer 1969-1984 Harley-Davidson FL/FLH 1966-1971 XLH Saddlebag Carrier - CAD Plated
$10.89

Colony #3003-3 Oil Line Banjo Bolt and Washer Kit 1936-1937 Harley-Davidson Knucklehead 1937 Flathead/Sidevalve
$11.50

Colony #1020-P Complete Show Bike Kit Smooth Allen Hardware 1992-1998 Harley-Davidson FLT/FXR - Chrome Plated
$230.23

Colony #3055-3 Gas Tank Shut Off Rod Spacer Kit 1940-1965 Harley-Davidson Big Twins/45's - CAD Plated
1 review $9.08

Colony #3017-4 Fork Slider Screw Kit 1949-E1977 Harley-Davidson FL/FLH - CAD Plated
2 reviews $5.81

Colony #9937-20-P Front Motor Mount Kit Smooth Chrome Allen Harley Dyna 91-up — Colony #9937-20-P Front Motor Mount Smooth Allen Kit 1991-Up Harley-Davidson Dyna - Chrome Plated
1 review $20.27

Colony #9819-12-P Timing Cover Smooth Chrome Allen Bolt Kit Harley Big Twin 1993-up — Colony #9819-12-P Timing Cover Smooth Allen Bolt Kit 1993-Up Harley-Davidson Big Twin - Chrome Plated
$14.89

Colony #8820-9-P Transmission Side Cover Smooth Allen Screw Kit 1936-Up Harley-Davidson Big Twin 4 Speeds - Chrome Plated
$20.65

Colony #8747-12-P Oil Pump Mounting Kit Smooth Allen Screw Kit 1978-1991 Harley-Davidson Shovelhead & Evolution - Chrome Plated
$13.78

Colony #8725-18 Handlebar Clamp Mount Kit Cap Bolts Kit 1983-Up Harley-Davidson FX/XL - Chrome Plated
$20.27

Colony #8451-5 Rear Star Hub Cap Screw Kit Harley-Davidson 74s With 1/4-24 Holes - Chrome Plated
$17.14

Colony #8447-8 Lifter Base Cap Screw Kit 1936-1975 Harley-Davidson OHV Big Twins - Chrome Plated
$25.71

Colony #8444-2 Generator Cap Screw Set Harley-Davidson 1936-57 Knuckle Pan - Chrome Plated
$13.94

Colony #2986-4 Spring Retainer Acorn Nut Set 1936-1938 Harley-Davidson Big Twin 1949-1957 45s - Chrome Plated
$21.45

Colony #8437-16 Cylinder Base High Crown Cap Nut Set 1930-1977 Harley-Davidson 74s - Chrome Plated
$21.66

Colony #2997-6 Chain Tensioner Pad and Lockwasher Kit 1965-2000 Harley-Davidson FL/FX
$17.28

Colony #8906-5-P Transmission Shifter Cover Smooth Allen Kit 1987 Harley-Davidson FX/FL - Chrome Plated
$11.90

Colony #2991-2 Generator Screw Kit Special 5/16 inch case holes Harley Big Twins 36-57 — Colony #2991-2 Special Generator Screw Kit 5/16 inch Case Holes 1936-1957 Harley-Davidson Big Twins - Parkerized
$12.10

Colony #2964-2 Generator Frame Screw Kit 1932-1957 Harley-Davidson Twins - Parkerized
$17.42

Colony #2957-2 Kick Starter Pedal Rubber Rod Kit 1917-Up Harley-Davidson - CAD Plated
$19.36

Colony #2956-2 Kick Starter Pedal Rubber Rod Kit 1917-Up Harley-Davidso - Parkerized
$19.36

Colony #2530-6-P Fuel Tank Mounting Smooth Allen Kit 1985-1986 Harley-Davidson FXWG/FXST/FXSB/FXEF - Chrome Plated
$21.57

Colony #2523-5-P Fuel Tank Smooth Button Head Mounting Kit 1988-1994 Harley-Davidson FXR - Chrome Plated
1 review $13.92

Colony #2522-6-P Rear Fender Rail Mounting Smooth Allen Screw Kit 1973-1984 Harley-Davidson FX - Chrome Plated
$19.48

Colony #2524-2-P Fuel Tank Smooth Mounting Kit Pre-1984 Harley-Davidson Big Twins - Chrome Plated
1 review $10.44

Colony #8795-4-P Handlebar Clamp Smooth Allen Screw Kit 1974-1971 Harley-Davidson FX/XL L1977-1984 FL - Chrome Plated
$10.04

Colony #2109-12-P Rear Master Cylinder Smooth Allen Mounting Kit 1982-1994 Harley-Davidson FXR 1984-1995 Softail - Chrome Plated
$13.40

Colony #8470-8 Lifter Base Cap Screw Kit 1976-Up Harley-Davidson 74s - Chrome Plated
$27.89

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

Colony #8777-20-P Smooth Allen Head Bolt Kit 1948-Up Harley-Davidson Panhead/Shovelhead - Chrome Plated
$62.27

Colony #8763-20-P Primary Cover Smooth Allen Screw Kit 1980-1984 Shovelhead & Evo 5 speed - Chrome Plated
$37.22

Colony #9932-8-P Intake Manifold to Cylinder Smooth Allen Kit 1995-Up Harley-Davidson Big Twin/XL - Chrome Plated
1 review $9.35

Colony #8762-17-P Primary Cover Smooth Allen Screw Kit 1971-Up Shovelhead/Evo 4 Speed - Chrome Plated
$33.17

Colony #8737-24-P Valve Cover Smooth Allen Screw Kit Harley-Davidson Panhead With Steel D Rings - Chrome Plated
$33.84

Colony #8457-20 Heat Treated Cap Style Head Bolt Kit 1948-1983 Harley-Davidson Panhead/ Shovelhead - Chrome Plated
$66.63

Colony #8440-12 Rocker Box Cap Bolt Set 1936-1947 Harley-Davidson Knucklehead - Chrome Plated
$27.51

Colony #2988-3 Crankcase Breather Stud and Pipe 1939-1947 Harley-Davidson Knuckleheads - Parkerized
$36.00

Colony #2963-20 Grade 8 CP 1038 Head Bolt Kit 1948-1976 Harley-Davidson Pangead/Shovelhead - Parkerized
$43.99

Colony #8797-4-P Handlebar Lever Mount Smooth Allen Screw Kit Pre-1972 Harley-Davidson FX/FL/XL - Chrome Plated
$6.38

Colony #2965-3 Tombstone Tail Light Cover Stainless Steel Screw Kit 1947-1972 Harley-Davidson Big Twins
2 reviews $4.24

Lowbrow Customs Competition Screw-In Gas Cap for Harley-Davidson 1996 & later - Black
32 reviews $42.17 $51.50

Colony #2846-3 Wheel Bearing Locknut/Seal Kit Harley-Davidson XL/FL/FLH/FX/Sidecar/Servi-car - Chrome Plated
$36.30

Colony #2933-1 Clutch Side Nut 1936-1940 Harley-Davidson Big Twin Knuckelhead
$41.80

Colony #2822-1 Oversized Linkert Carburetor Venturi 1-1/16 inch OEM #27362-30 Harley-Davidson
$41.97

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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