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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PanAm Oils Inc. Oil Pressure Gauge 0-60 psi - Black
8 reviews $37.15

Lowbrow Customs Dished Screw-In Gas Cap for Harley-Davidson 1996 & later - Aluminum
4 reviews $46.24

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

Colony #9532-13 Rear Crash Bar Mounting Kit 1936-1957 Harley-Davidson Big Twin - Parkerized
1 review $36.54

Colony #9515-2 Rear Axle Adjusting Screw 1993-1999 Harley-Davidson FXST OEM# 47579-93 - Chrome Plated
$18.16

Colony #3032-4 Cam Follower & Retainer Kit 1952-1979 Harley-Davidson FL/FLH 1971-1979 FX
$36.30

Colony #2951-1 Wire Clip 1951-1969 Harley-Davidson Big Twins 1963-E1967 Servi-car - Parkerized
1 review $12.10

Colony #9681-7 Generator Mounting Hardware Kit 1930-1957 Harley-Davidson Twins - Parkerized
$18.15

Cycle Standard Replacement Oil Tank Cap Harley-Davidson OEM# 62644-84T
7 reviews $12.02

Colony #3685-12 Lower Motor Mount Kit 1966-1969 Harley-Davidson OHV Big Twins - Chrome Plated
$36.03

Colony #3468-7 Steering Damper Upper Kit 1930-1936 Harley-Davidson VL
$36.00

Drag Specialties Oil Pressure Gauge Mounting Kit 1984 - 1999 Harley-Davidson Big Twins
8 reviews $36.00

James Gaskets Cam Change Gasket Kit with Metal Cam Cover Gasket - 1970-92 Harley-Davidson Big Twin
1 review $36.14

Cycle Craft #46 Pilot Jet - 1988-2006 Keihin CV Carburetor
1 review $5.99

Colony #9644-2 Oil Screen Plug 1981-Up Harley-Davidson FL/FX - Chrome Plated
$11.96

Colony #8791-10 Disc Rear Rotor to Hub Screw Kit 1979-1991 Harley-Davidson FX/XL 1981-1984 FL - Chrome Plated
1 review $17.88

Colony #8761-7 Timing Cover Knurled Allen Screw Kit 1970-1992 Harley-Davidson Shovelhead/Evo - Chrome Plated
2 reviews $11.90

Cycle Standard Harley Shifter Shaft Lever OEM #33709-82A
15 reviews $17.67

Prism Supply Co. Ratchet Top Shifter Plate - Stainless Steel
$34.99

Motone Billet Bayonet / Cam Harley Style Vented Gas Cap - Aluminum
$34.99

Gasbox Gorilla Headlight Mount for Harley FL 41mm Wide Glide Front Forks
$34.95

Colony #8735-24 Valve Cover Screws 45/64 inch Long 1954-1965 Harley-Davidson Panhead With Steel D-Rings - CAD Plated
1 review $34.93

Drag Specialties Swing Arm Bearing Kit 1958-86 Harley-Davidson FX/FXWG/FLH (except Softail, FXR, FLT)
1 review $35.31

Colony #8769-3 Front Axle Nut & Washer Kit 1972-Up Harley-Davidson Wideglide - Chrome Plated
1 review $11.56

Colony #3193-2 Primary Drain Plug 2004-2006 Harley-Davidson Softail - Zinc Plated
9 reviews $11.50

Colony #8851-4 Footpeg Mounting Shoulder Bolt & Nut Kit 1969-Up Harley-Davidson FX/FL/XL OEM# 4721 - Chrome Plated
$17.22

Colony #7808-4 Upper Pushrod Covers (Inner) 1957-1985 Harley-Davidson Sportster 1936-Early 1979 OHV Big Twins
3 reviews $34.05

Colony #3465-1 Rear Axle Spacer 1930-1936 Harley-Davidson VL OEM# 3953-30 - Parkerized
$16.94

Colony #3295-16 Spotlight Mounting Kit 1949-1978 Harley-Davidson Big Twins - CAD Plated
1 review $16.94

Colony #2601-2 Brake Caliper Bleed Screws 1983-2004 Harley-Davidson Big Twin 1983-2003 XL - Zinc Plated
4 reviews $8.47

Colony #8909-13-P Transmission Side Cover Smooth Allen Kit 1987-2006 Harley-Davidson FX/FL/Softail 1991-2005 Dyna - Chrome Plated
$33.84

Colony #2985-2 Damper Tube Mounting Kit 1979-Up Harley-Davidson XL 1975-Up FL/FX with SHOWA Forks
6 reviews $8.46

Colony #2306-16 Electrical Terminal Plate 1959-1969 Harley-Davidson Big Twin
$33.84

Colony #2305-12 Electrical Terminal Plate 1949-1957 Harley-Davidson Big Twin
3 reviews $33.84

Cycle Standard Throttle Idle Cable OEM 56355-96A Harley Dyna 1996-2008 +4 inch Extended
1 review $33.79

Colony #3636-4 Kickstand Leg Stop Kit 1936-1984 Harley-Davidson Big Twins - CAD Plated
$16.78

Colony #2530-6 Gas Tank Allen Mounting Kit 1985-1956 Harley-Davidson FXWG/FXST/FXSB/FXEF - Chrome Plated
1 review $16.70

Colony #8876-5 Seat Bar Bushing Set 1965-1980 Harley-Davidson Big Twin - CAD Plated
$33.31

Colony #8875-5 Seat Bar Bushing Set 1937-1964 Harley-Davidson Big Twin 1929-1973 45 Solo/Servi-Car - CAD Plated
$33.31

Drag Specialties 40A Circuit Breaker 1970-1999 Harley-Davidson Big Twin/XL 1999 Twin Cam
$8.27

Colony #2628-4 Front Brake Cable Handlebar Clip 1928-1948 Harley-Davidson Big Twins 1932-1957 Servi-cars - Parkerized
1 review $16.50

Colony #2627-4 Spark Control Coil Frame Clamp 1937-1946 Harley-Davidson Big Twins - Parkerized
$16.50

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

Colony #3059-5 Foot Clutch Lever Friction Disc Kit 1941-1978 Harley-Davidson Big Twins - Parkerized
1 review $32.99

Cycle Standard Throttle Idle Cable OEM 56355-96A Harley Dyna 1996-2008
1 review $32.90

Blue Streak High-Performance Condenser - 1970-79 Harley-Davidson
$10.95

Colony #3537-17 Primary Cover Allen Screw Kit 1971-Up Harley-Davidson Shovelhead & Evolution 4 Speed
4 reviews $16.34

Colony #8600-8 Hi-Torque Cylinder Base Nut Set Harley-Davidson Big Twin Pre-Evo - Chrome Plated
2 reviews $32.60

Colony #8708-8 Lifter Base Screw Kit 1976-Up Harley-Davidson Big Twin - Chrome Plated
1 review $16.26

Cycle Standard Cycle Standard 24"" Handlebar Wiring Extension Kit for 1996-2006 Harley Models
10 reviews $40.64

Cycle Standard 41mm Fork Seal Rebuild Kit - 1977-1984 Harley-Davidson FL 1980-83 FXWG FLT
$12.40

Colony #2998-5 Rear Brake Switch Pull Kit 1940-1957 Harley-Davidson Big Twins - CAD Plated
$31.89

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

Colony #8857-8 Cylinder Base Stud Set 1978-1984 Harley-Davidson Big Twins OEM# 16837-78
1 review $31.87

Colony #3551-4 Triple Clamp Bolt 1930-1931 Harley-Davidson Twins - Parkerized
$35.20

Colony #8856-8 Cylinder Base Stud Set 1930-1977 Harley-Davidson Big Twins OEM# 16831-30
3 reviews $31.87

Colony #7603-4 Lower Motor Mount Kit Acorn Nut 1936-1984 Harley-Davidson OHV Big Twins - Chrome Plated
6 reviews $31.87

Colony #3445-8 Rocker Shaft End Plug & Cap Nut Kit 1971-Up Harley-Davidson Shovelhead 1971-1985 Sportster
2 reviews $31.81

Drag Specialties Oil Filter for 1980-1985 Harley-Davidson Sportster and Big Twin Models - Black - OEM# 63782-80
1 review $10.25

Colony #2331-20 Battery Box Mounting Kit 1965-1984 Harley-Davidson FX/FL
$15.73

Colony #8105-16 Cylinder Base Nuts & Lock Washers 1930-1978 Harley-Davidson Big Twins - CAD Plated
2 reviews $15.64

Cycle Standard Master Cylinder Gasket Harley-Davidson OEM #45012-72
13 reviews $5.04

Colony #8916-17-P Primary Cover Smooth Allen Screw Kit 1985-Up Harley-Davidson FXR 1985-1999 FLT 5 speed - Chrome Plated
1 review $31.13

Colony #3050-2 Stem Nut Lockwasher Kit 1960-Up Harley-Davidson FL/FLH W/O Steering Damper
$15.52

Colony #9412-19 Timing Cover Screw Kit 1937-1973 Harley-Davidson 45's - Chrome Plated
$30.87

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

Colony #3469-1 Rear Chain Oiler Tee Fitting 1970-1978 Harley-Davidson FL/FLH/FX - Zinc Plated
$30.80

Colony #2505-1 Spark Plug Front Cable Clamp 1936-1969 Harley-Davidson 74 OHV - CAD Plated
$7.70

Colony #2276-10 Sprocket 12 Point Bolt and Nut Kit 1973-Up Harley-Davidson Big Twin and XL - Chrome Plated
4 reviews $30.79

Colony #8835-10 Sprocket Bolt & Washer Kit Allen Head 1993-1998 Harley-Davidson Big Twin Spoke Wheel 1979-1990 XL Cast Wheel - Chrome Plated
1 review $30.79

Colony #8765-2 Point Cover Allen Head Screws 1979-Up All Harley-Davidson - Chrome Plated
3 reviews $4.38

Cycle Standard Rocker Oil Lines - Chrome - 1966-84 Harley-Davidson Shovelhead
$30.63

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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