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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Cycle Standard Shift Lever - 1985-2006 Harley-Davidson Big Twin/Twin Cam - Chrome - OEM# 33715-85A
1 review $23.03

Cycle Standard Steel Clutch Plate Set 1991-Up Harley-Davidson Sportster 90-97 Big Twin
$25.53

Colony #2501-12 Rear Brake Rod Mounting Kit 1930-1969 Harley-Davidson Big Twin - Parkerized
1 review $15.31

Colony #2430-2 Transmission Mainshaft Bearing Nut and Lock Tab 1936-1985 Harley-Davidson Big Twin - Parkerized
1 review $15.31

Colony #8014-2 Rear Chain Adjusters - 1936-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead - CAD Plated
2 reviews $15.29

Drag Specialties Wheel Bearings and Races - Replaces Harley-Davidson OEM# 9052
3 reviews $22.83

Cycle Standard Headlight Visor - 5-3/4" Headlight - Chrome - Replaces OEM# 69738-05
$45.32

Cycle Standard Stock Style Chrome Kicker Lever - 1936 - 1977 Harley Big Twin and 1957 - 1976 XL
5 reviews $45.07

Gasbox Front Pipe to Frame Clamp Set for 1958 - 1969 Harley-Davidson FL Models - Parkerized - OEM # 65513-58, 65512-37A
3 reviews $22.50

Cycle Standard Neck Post Bearing & Race Set Made in China
$15.99

Colony #8762-17 Primary Cover Allen Head Screw Kit 1971-Up Harley-Davidson Shovelhead/Evo 4 Speed - Chrome Plated
2 reviews $22.34

Colony #2138-4 Handlebar Riser Hex Bolt Kit 1/2-13 x 3-1/2" - Chrome Plated
1 review $14.89

Colony #2123-4 Handlebar Riser Cupped Washers 1973-Up Harley-Davidson All Models - Chrome Plated
3 reviews $14.89

#2399-2 Stem Nut Stock Zinc OEM 45718-71 Harley FX FXR 71-87 XL 78-87 — Colony #2399-2 Stem Nut Stock 1971-1987 Harley-Davidson FX/FXR 1978-1987 XL - Zinc Plated
5 reviews $16.70

Colony #9685-12 Floorboard Hinge Bolt Kit 1941-1984 Harley-Davidson All Models - Parkerized
3 reviews $14.89

Cycle Standard Harley Engine Temperature Sensor - Replaces 32446-99
3 reviews $14.88

Cycle Standard Oil Filter for Harley-Davidson Dyna Softail and Touring Models - Black - OEM# 63798-99A 63731-99
5 reviews $12.32

Colony #3735-4 Linkert Carburetor Gasket Kit 1933-65 Harley-Davidson
$11.00

Colony #3142-2 Top Plugs For Classic Springer Forks - Aluminum — Colony #3142-2 Aluminum Top Plugs For Classic Harley-Davidson Springer Forks
1 review $22.00

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

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

Colony #3364-1 Carburetor Choke Rod 1948-1965 Harley-Davidson OHV Big Twins - CAD Plated
1 review $21.99

Cycle Standard Master Cylinder Rebuild Kit Replaces Harley-Davidson OEM 42382-87A
1 review $54.88

Colony #8483-2 Dash Center Screw Kit 1947-1967 Harley-Davidson - Chrome Plated
1 review $8.78

Cycle Standard Replacement Lower 39mm Damper Springs 1987-Up Harley-Davidson XL 1991-2005 FXD 1987-1994 FXR OEM# 45374-87
$15.61

Colony #3466-1 Rear Axle Spacer 1930-1936 Harley-Davidson VL OEM# 3955-30 - Parkerized
$14.52

Colony #9983-3 Shifter Cam Plunger Kit 1936-1976 Harley-Davidson Big Twin 1940-1973 45s - Parkerized
$21.73

Drag Specialties Wheel Bearings and Races - Replaces Harley-Davidson OEM# 43577-67
$42.59

Colony #8602-20 Oversize Stroker Upper Pushrod Cover Kit 1940-1947 Harley-Davidson Knucklehead & All Shovelhead - Chrome Plated
1 review $50.08

Cycle Standard Clutch Cable OEM# 38618-52 1952-1967 Harley-Davidson FL/EL
$23.51

Colony #9630-2 Front Brake Cable Adjusting Screw 1941-1948 Harley-Davidson Big Twin 1941-1957 45 Servicar - Parkerized
$21.12

Colony #8732-24 Valve Cover Screws 1-1/4 inch Long 1954-1965 Harley-Davidson Panhead With Alloy D-Rings - Chrome Plated
1 review $41.97

Colony #3792-4 Oil Return Line Ground Wire Clamp 1936-1940 Harley-Davidson Big Twins/45's
$20.90

Colony #3325-4 Fuel Line Fitting Nut & Seal Kit 1950-1965 Harley-Davidson FL 1950-1952 45's 1950-1958 Servi-Car - CAD Plated
$13.92

Colony #2540-2 Ignition Timer Cover Stud Kit 1980-Up Harley-Davidson Big Twin/XL - Zinc Plated
$13.92

V-Twin Manufacturing Polished Shifter Rod 1991-2005 Harley-Davidson FXD
$41.71

Colony #9867-18 Transmission Mounting Kit 1986-Up Harley-Davidson FXST - Zinc Plated
$20.70

Colony #7507-20 Upper Pushrod Cover Kit 1957-1985 Sportster 1948-1965 Panhead - Chrome Plated
3 reviews $50.08

Colony #8927-3 Gas Strainer Screen 1932-1964 Harley-Davidson Big Twins/45s OEM# 62265-32
1 review $20.70

Colony #9206-12 Oil Tank Bracket to Frame Mounting Kit - 1958-1964 Harley-Davidson Panhead - CAD Plated
$20.70

Colony #8100-8 Chain Adjuster & Swingarm End Cover Kit 1973-1984 Harley-Davidson FX/FL 1979-1992 XL 1981-1987 FXR - Chrome Plated
3 reviews $41.29

Colony #2866-1 Rear Axle Spacer 1936-1957 Harley-Davidson Big Twins - Parkerized
$20.57

Colony #3678-16 Lower Motor Mount Kit 1936-1957 Harley-Davidson OHV Big Twins - Parkerized
$40.70

Colony #8794-10 Disc Front Brake Rotor to Hub Torx Screw Kit 1984-Up Harley-Davidson FXST/FXWG - Chrome Plated
$20.27

Colony #2142-12 Pushrod Cover Seal Kit 1979-1984 Harley-Davidson Shovelhead
3 reviews $13.40

Colony #8824-8 Coil Mounting Stud Kit 1956-1982 Harley-Davidson Big Twin OEM# 72341-56A - CAD Plated
$13.40

Colony #9667-8 Oil Tank Mounting Kit - 1936-1957 Harley-Davidson Kuncklehead/Panhead - Parkerized
$13.40

Colony #8796-4-P Handlebar Clamp Smooth Allen Screw Kit 1982-Up Harley-Davidson FX/XL - Chrome Plated
$10.04

Lowbrow Customs Competition Screw-In Gas Cap for Harley-Davidson 1996 & later - Black
29 reviews $40.16 $49.05

Gasbox Front Pipe Exhaust Clamp 2 Piece Set 1937-1969 Harley-Davidson EL FL - Parkerized OEM # 65512-37
3 reviews $20.00

Colony #3425-10 Disc Brake Rotor Bolt Kit 1973-1980 Harley-Davidson FL Rear 1973-1974 FL Front 1973 FX/XL Front - Zinc Plated
2 reviews $13.31

Colony #3689-15 Lower Motor Mount Kit 1937-1947 Harley-Davidson Side Valve Big Twins - CAD Plated
$39.88

Cycle Standard Throttle Idle Cable OEM 55355-92 Harley Dyna 1992-1995
1 review $19.93

Colony #9653-4 Transmission Case Bottom Stud Kit 1936-1983 Harley-Davidson Big Twins - Parkerized
3 reviews $19.93

Colony #3245-2 Valve Spring Cover Wrench Set 1930-1938 Harley-Davidson VL/UL
2 reviews $39.60

Colony #3671-5 Disc Rotor Allen Screw & Nut Kit 1979-1991 XL/FX (Cast Wheel) - Zinc Plated
$12.93

Colony #3588-1 Gas Tank Buffer 1909-1925 Harley-Davidson All 1926-1929 F/J 1930-1936 V/VL
$9.68

Colony #2671-2 Instrument Panel Light Shield Kit 1939-1946 Harley-Davidson Big Twins/45s - CAD Plated
$19.36

Colony #2088-8 Front or Rear Caliper Mounting Allen Bolts Harley-Davidson Big Twins - Chrome Plated
1 review $19.36

Colony #2127-11 Generator Brush Positive Terminal Screws/Fittings 1958-1969 Harley-Davidson FL/FLH 1958-1981 XL 1958-1965 Servi-Car
3 reviews $19.36

Colony #8919-19 Primary Cover Chrome Allen Head Screw Kit 1989-2006 Harley-Davidson Softail 1991-2005 Dyna - Chrome Plated
1 review $38.59

Colony #2851-1 Wheel Bearing Locknut Tool Harley-Davidson XL/FL/FLH/FX/Sidecar/Servi-car
4 reviews $38.50

Colony #9664-8 Linkert Carb Mounting Screws Harley-Davidson OEM# 27424-48 - Parkerized
3 reviews $9.56

Colony #2794-6 Grease Zerk Fitting 1936-1984 Harley-Davidson - 6 Pack - Parkerized
5 reviews $12.74

Colony #8400-8 Rocker Shaft Cap Nut & Washer Kit 1966-1985 Harley-Davidson Shovelhead 1957-1985 Sportster - Chrome Plated
$12.74

Cycle Standard Screw-in Style Gas Cap Gasket replaces Harley-Davidson OEM #61109-85
22 reviews $3.41

Colony #8609-36 Rocker Box Nut Kit 1966-1983 Harley-Davidson Shovelhead - CAD Plated
$12.67

Colony #9707-18 Rear Fender Mounting Kit 1936-1957 Harley-Davidson Big Twin - Parkerized
1 review $37.90

Colony #2385-1 Oversized 9/16-18 Thread Tap for Stripped Drain Hole 1965-Up Harley-Davidson Big Twin 1967-Up Sportster
3 reviews $37.66

Colony #3553-3 Rear Axle Mount Kit 1989-Up Harley-Davidson Big Twins & XL - Chrome Plated
2 reviews $9.38

Colony #3392-10 Handlebar Lever Mounting Screw Kit 1973-1981 Harley-Davidson Big Twin & Sportsters
$7.49

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

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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