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 #2155-4 Rear Axle Nut and Spacer Kit Grooved Harley-Davidson VRSC 2002-04 - Chrome Plated
$37.90

Colony #2154-3 Front Axle Nut and Spacer Kit Smooth 2002-2003 Harley-Davidson VRSC - Chrome Plated
$36.54

Colony #2153-3 Front Axle Nut and Spacer Kit Grooved 2002-2003 Harley-Davidson VRSC - Chrome Plated
$37.90

Colony #2150-5 Rear Axle Nut Spacer Kit Smooth 2000-2001 Harley-Davidson FLT - Chrome Plated
$40.61

Colony #2148-8 Pushrod Cover Kit for Harley-Davidson Twin Cam Motors - Chrome Plated
$77.15

Colony #2106-4 Countersunk Gas Tank Mounting Kit 1998-Up Harley-Davidson FLT - Chrome Plated
$14.34

Colony #2102-12 Timing Cover Phillips Screw Kit 1950-1952 Harley-Davidson Big Twin - CAD Plated
$21.78

Colony #2101-12 Timing Cover Phillips Screw Kit 1950-1952 Harley-Davidson Big Twin - Chrome Plated
$24.20

Colony #2099-16 Lifter Base Phillips Screw Kit 1950-1953 Harley-Davidson Big Twin 1952-1956 K Models - Chrome Plated
$20.33

Colony #2097-2 Generator Phillips Screw Kit 1950-1954 Harley-Davidson Big Twin - Chrome Plated
$11.40

Colony #2089-8 Springer Spring Rod Kit 1930 Harley-Davidson VL OEM #2623-23
$59.55

Colony #2073-2 Tappet Oil Screen/Pump Check Valve/Relief Valve 1981-Up Harley-Davidson Big Twin - Chrome Plated
$12.34

Colony #2019-8 Rocker Shaft End Plug 1957-1970 Harley-Davidson Big Twin - Chrome Plated
$43.45

Colony #2017-8 Head Bolt Washers 1984-Early 1985 Harley-Davidson Big Twin/XL - Chrome Plated
$34.76

Colony #2015-6 Oversize Valve Cover Screws 1948-1965 Harley-Davidson Panhead W/Steel D Rings - CAD Plated
$19.12

Colony #2004-6 Tool Box Mounting Kit Late 1962-1964 Harley-Davidson Big Twin - CAD Plated
$20.57

Colony #9862-8 Springer Spring Rod Kit 1931-1936 Harley-Davidson VL - Zinc Plated
$57.94

Colony #9844-5 Chrome Countersink Washer Set for 7/16" Flat Head Socket Harley-Davidson - Chrome Plated
$19.93

Colony #9828-16 Lifter Base Screw Kit 1/4-20 Oval Allen Harley-Davidson After Market Cases- Chrome Plated
$17.92

Colony #9825-4 Custom Ribbed Front Axle Nut & Spacer Kit 1984-1996 Harley-Davidson FXST/FXSTC/FXSTB 1984-1994 FXDWG/FLT - Chrome Plated
$33.31

Colony #9824-3 Custom Front Axle Nut & Spacer Kit 1988-1996 Harley-Davidson FXSTS - Chrome Plated
$31.87

Colony #9823-3 Custom Ribbed Front Axle Nut & Spacer Kit 1988-1996 Harley-Davidson FXSTS - Chrome Plated
$33.31

Colony #9822-4 Oil Filter Adaptor Mounting Acorn Kit 1992-Up Harley-Davidson Big Twin - Chrome Plated
$7.96

Colony #9820-6 Timing Cover Acorn Screw Kit 1993-Up Harley-Davidson Big Twin - Chrome Plated
$23.54

Colony #9816-16 Lifter Base Screw Kit 1/4-20 Harley-Davidson Aftermarket Cases - Parkerized
$15.79

Colony #9812-3 Smooth Rear Axle Spacer Kit 1991-1999 Harley-Davidson Dyna Glide - Chrome Plated
$31.87

Colony #9785-9 Transmission Shifter Cover Acorn 1991-Up Harley-Davidson Dyna - Chrome Plated
$22.09

Colony #9777-8 Handlebar Lever Mount & Master Cylinder Acorn Screw Kit 1982-1995 Harley-Davidson Big Twin/XL - Chrome Plated
$20.27

Colony #9764-16 Oil Pump Mounting Kit Cap Style 1992-Up Harley-Davidson Big Twin - Chrome Plated
$28.97

Colony #9763-16 Oil Pump Mounting Kit Acorn 1992-Up Harley-Davidson Big Twin - Chrome Plated
$28.97

Colony #2562-2 Panel Switch Knob and Screw Kit 1939-E1943 Harley-Davidson Big Twins & 45s - Chrome Plated
$14.85

Colony #2561-2 Panel Switch Knob and Screw Kit L1943-1946 Harley-Davidson Big Twin & 45s - Parkerized
$13.20

Colony #2555-1 Clutch Nut and Adjusting Nut Wrench 1937-1940 Harley-Davidson Big Twins - Parkerized
$101.20

Colony #2554-34 Machine Gun Bracket and Ammo Box Mounting Kit 1940-1942 Harley-Davidson WLA
1 review $123.97

Colony #2547-1 Wire Clip Frame Bull Neck Head Tube 1945-E1947 Harley-Davidson - CAD Plated
$16.50

Colony #2545-1 Wire Clip Frame Head Tube 1947-1978 Harley-Davidson Big Twins - CAD Pated
$16.50

Colony #2542-10 Circuit Breaker to Coil Wire Assembly 1936-1948 Harley-Davidson Twins
$24.20

Colony #2539-1 Sprocket Shaft and Gear Shaft Nut 1930-1936 Harley-Davidson VL
$11.00

Colony #2500-1 Pike Nut Fork Tube Plug 1985-Up Harley-Davidson Sportster & Superglide - Chrome Plated
$35.42

Colony #2499-1 Pike Nut Fork Tube Plug 1952-1972 Harley-Davidson XL/K 1971-1972 Superglide - Chrome Plated
$31.63

Colony #2486-1 Pike Nut Tappet Oil Screen Oil Pump Check Valve Plug 1981-Up Harley-Davidson Big Twins - Chrome Plated
$13.92

Colony #2484-3 Foot Clutch Lever Pin Rebuild Kit 1938-1940 Harley-Davidson Big Twins 1938-1952 45s
$13.92

Colony #2482-3 Foot Clutch Lever Pin Rebuild Kit 1941-1964 Harley-Davidson Hand Shifts
$13.92

Colony #2480-4 Shifter Rod End Bolt and Bushing Kit 1930-1936 Harley-Davidson VL - CAD Pated
$13.92

Colony #2458-8 Tool Box Mounting Kit 1935-1936 Harley-Davidson 74" Twins 1931-1934 45s & Singles - Chrome Plated
$26.57

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

Colony #2453-12 Pushrod Cover Kit Billet Alloy 1984-Up Harley-Davidson Big Twin Evo - Chrome Plated
$177.10

Colony #2411-2 Crank Pin Nut Set 1941-1953 Harley-Davidson 74" Big Twins
$32.00

Colony #2382-24 Transmission Side Cover Mounting Kit 1915-1930 Harley-Davidson Twins - Parkerized
$28.47

Colony #2377-36 Transmission Top Cover Mounting Kit 1915-1930 Harley-Davidson Twins - Nickel Plated
$45.54

Colony #2350-2 Foot Clutch Lever Pivot Shaft 1941-1964 Harley-Davidson Big Twins
$20.88

Colony #2204-8 Safety Guard Mounting Kit 1937-1947 Harley-Davidson 61"/74" 1955-1957 Panhead - Chrome Plated
$29.78

Colony #2187-11 Front Crash Bar Mounting Kit 1958-1969 Harley-Davidson FL - CAD Plated
$8.56

Colony #2186-11 Front Crash Bar Mounting Kit 1958-1969 Harley-Davidson FL - Chrome Plated
$9.31

Colony #9998-3 Front Axle Nut Spacer Kit Grooved 1997-1999 Harley-Davidson FXSTS - Chrome Plated
$33.31

Colony #9995-4 Front Axle Nut Spacer Kit Smooth 1997-1999 Harley-Davidson FLSTC - Chrome Plated
$31.87

Colony #9994-4 Front Axle Nut Spacer Kit Grooved 1997-1999 Harley-Davidson FLSTC - Chrome Plated
$33.31

Colony #9992-5 Front Axle Nut Spacer Kit Grooved 1997-1999 Harley-Davidson FXST/FXSTC/FXSTB - Chrome Plated
$46.35

Colony #9991-5 Front Axle Nut Spacer Kit Smooth 1995-1996 Harley-Davidson FXDWG - Chrome Plated
$43.45

Colony #9956-18 Motor Case Mounting Kit Allen 1999-Up Harley-Davidson Twin Cam/Dyna/FLT 2000-Up Softail - Chrome Plated
$20.85

Colony #9955-27 Motor Case Mounting Kit Acorn 1999-Up Harley-Davidson Twin Cam/Dyna/FLT 2000-Up Softail - Chrome Plated
$36.20

Colony #9952-11 Transmission Shifter Cover Mounting Kit Allen 1998-2006 Harley-Davidson FLT/Softail - Chrome Plated
$11.90

Colony #2526-4-P Rear Master Cylinder Mounting Kit Smooth Allen 1984-1985 Harley-Davidson FX - Chrome Plated
$10.44

Colony #2007-6-P Air Cleaner Mounting Kit Smooth Allen 1978-1983 Harley-Davidson Big Twins - Chrome Plated
$5.92

Colony #2885-24 Valve Spring Cover Set Plated 1930-1936 Harley-Davidson VL - CAD Plated
$198.00

Colony #2883-3 Front Brake Cable Adjusting Screw 1949 Harley-Davidson Big Twins - CAD Plated
$22.00

Colony #2854-6 Upper Engine Allen Mounting Kit 1984-1999 Harley-Davidson Softail - Chrome Plated
$13.92

Colony #2848-8 Batwing Fairing Spotlight and Turn Signal Bracket Mounting Kit 1996-Up Harley-Davidson - Chrome Plated
$16.34

Colony #2820-2 Brake Cable Lubricator 1930-1938 Harley-Davidson All Models
$30.04

Colony #2819-8 Horn Terminal Board Kit 1942-1946 Harley-Davidson All Models
$30.00

Colony #2811-13 Instrument Panel Light Switch Kit 1936-1945 Harley-Davidson Big Twin/45s - CAD Plated
$40.70

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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