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 #8164-19 Upper And Lower Motor Mount Kit 1936-1969 Harley-Davidson Big Twin OHV - Chrome Plated
5 reviews $57.53

Drag Specialties Clutch Cable OEM 38618-68C Harley-Davidson 4 Speed Big Twin 1968-1986
$54.54

Drag Specialties Clutch Cable Harley-Davidson 4 Speed Big Twin 1968-86 - 50" Long
3 reviews $54.54

The Cyclery Bearing Adjuster Nut Socket for Springer Forks
$108.50

EBC Brakes Sintered Rear Brake Pads 1991-98 H-D FXD/FXDL/FXDWG 84-94 FXR L87-99 FXST/FXSTB/FXSTC/FXSTS/FLST/FLSTC/FLSTF/FLSTS
$54.14 $56.31

Drag Specialties AGM Maintenance Free Battery 2000-Up Harley-Davidson Softails 99-17 FXD/FXDWG/FLD
2 reviews $107.94

Cycle Standard Exhaust Port Gasket 1984-2024 Harley-Davidson Big Twins 1986-2022 XL OEM# 65324-83 - 2 Pack
$15.41

Drag Specialties 3-1/2 inch Pullback Handlebar Riser Set - Black
$105.01

Colony #3634-2 Reproduction Footrests 1952-1990 Harley-Davidson K/KH/XL 1971-1991 FX
$35.00

Unity Manufacturing Hydraulic Pushrod Wrench Set
2 reviews $35.00

Gasbox Front Motor Mount Spacer Plate Harley-Davidson Knucklehead Panhead UL OEM 438-48 24795-48
5 reviews $15.00

Cycle Standard Harley-Davidson Shifter Peg - Replaces OEM #34611-65
54 reviews $6.25

Fast Eddy Co. No. 7 Connecting Rod Alignment Tool 1936-99 Harley Big Twins & All Sportsters
1 review $34.95

Drag Specialties Single Gauge Bracket - Black - 1995-2011 Harley-Davidson XL883 1995-2005 FXD Models
1 review $103.98

Gasbox Wideglide Headlight Mount 1948 - 1985 Harley-Davidson FLH - Tumbled Stainless
6 reviews $25.95

Lowbrow Customs 39mm Low Profile Fork Caps - Brass

13 $51.64

Lowbrow Customs Motor Company Aluminum Shifter Peg for Harleys
20 reviews $17.17

Colony #8603-8 Adjustable Pushrod & Solid Lifter Kit 1984-Up Harley-Davidson Evo
2 reviews $102.11

S&S Cycle Throttle Cable Guide - Use a CV Cable on an S&S Super E/G Carburetor
5 reviews $38.27 $40.95

Unity Manufacturing Clutch Retaining Washer - 1936-1984 Harley-Davidson
$12.50

Unity Manufacturing Clutch Lockup Tool - BDL Clutches
$50.00

Unity Manufacturing Four Speed Clutch Lockup Tool - BDL/Pro-Clutch
3 reviews $50.00

Unity Manufacturing Four Speed Clutch Lockup Tool - Stock
$50.00

Cycle Standard Flat Points Cover OEM# 32588-70A for Harley-Davdison 1970 & Up XL 1970 - 1999 Big Twin
3 reviews $9.88

K&N Air Filters Oil Filter - Chrome - Harley-Davidson Evolution Big Twin Harley and Sportster Models - K&N Part #KN-170C
5 reviews $19.99

Colony #7708-1 Bronze Seat Post 1936-1957 Harley-Davidson Big Twins
3 reviews $24.98

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

Gasbox Exhaust Clamp 4 Piece Set 1947 - 1957 Harley-Davidson Panhead - Parkerized OEM # 47-57 CL HDW
$49.95

Cycle Standard Wagner Lockheed Type Rear Drum Brake Master Cylinder - Chrome - 1958-1972 Harley-Davidson FL 1971-1972 FX
$99.84

S&S Cycle Ignition Rotor - 1970-99 Harley-Davidson Big Twins
$19.95

Colony #2011-8 Head Bolt Set 12 Point 1985-1991 Harley-Davidson Big Twin 1986-1992 XL - Chrome Plated
2 reviews $109.99

Cycle Standard Springer Style Bottom Mount Headlight - Chrome
11 reviews $97.08

Cycle Standard Throttle Cable OEM 56356-96A Harley Dyna 1996-2008 +4 inch Extended
$34.31

Colony #2943-1 Boot Guard 1936-Up Harley-Davidson Knucklehead/Flathead - Black Powder Coated
$95.70

Colony #7803-11 Acorn Nut Kickstand Mounting Kit 1936-1986 Big Twin 4 Speeds (Except Softail) - Chrome Plated
5 reviews $23.91

Colony #8225-8 Rocker Shaft End Plug & Cap Kit 1971-Up Harley-Davidson Shovelhead 1971-1985 XL - CAD Plated
2 reviews $31.81

Colony #2322-11 Rocker Arm Cover Stud Kit 1966-1984 Harley-Davidson Shovelhead
4 reviews $47.38

James Gaskets 5 Speed Transmission End Cover Gasket 1987-2006 Harley-Davidson Big Twin
$4.70

Cycle Standard Throttle Cable OEM 56356-96A Harley Dyna 1996-2008
2 reviews $33.44

James Gaskets Graphite Exhaust Port Gasket 1984-2013 Harley-Davidson Big Twins and 1986-2013 XL
1 review $24.95 $31.19

Lowbrow Customs Air Cleaner Backplate Gasket for Super E / G Carburetor
44 reviews $2.02

Cycle Standard Headlight Visor - 5-3/4" Headlight - Black - Replaces OEM# 69735-05
$35.85

Colony #7410-1 Sprocket Shaft Bearing Retainer with Lip Seal Standard Size Replaces 1955-1968 Harley-Davidson 74's
4 reviews $45.98

Cycle Standard Rear Fender Strut Set - 1977-1984 Harley-Davidson FLH
$99.32

V-Twin Manufacturing Clutch Release Arm Harley-Davidson 1971-1978 FX 1968-1978 FL
$45.80

Cycle Standard Headlight Visor - 5-3/4" Headlight - Black - Replaces OEM# 69738-05
$32.97 $43.96

Colony #7112-19 Transmission Side Cover & Clutch Arm Acorn Nut Kit - 1936-1984 Harley-Davidson Big Twin 4 Speeds - Chrome Plated
2 reviews $24.71

#3106-18 Front Shock Absorber Lower Mount Kit Harley Springer 1946-57 — Colony #3106-18 Front Shock Absorber Lower Mount Kit 1946-1957 Harley-Davidson Springers - Parkerized
$97.90

Colony #8160-4 Rear Axle Nut and Lock Kit - 1930-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead - Chrome Plated
$31.14

Colony #7502-2 Oversize Drain Plug & Tap Kit 1965-Up Harley-Davidson Big Twins 1967-Up Sportster - Chrome Plated
1 review $46.35

Cycle Standard Domed Slim Black Screw-In Harley Style Gas Cap 1996 & up
43 reviews $23.14

Lowbrow Customs Bottom Mount Headlight Bracket Harley-Davidson Springers 1936 - 1949
2 reviews $46.24

Drag Specialties XLX Style Front Fender 1999-05 Harley-Davidson Dyna 86-Up XL 11-Up 883L/1200C/1200CX 14-20 1200T
2 reviews $91.62

Colony #2053-10 Custom Sprocket Hex Bolt/Washer Kit Cast Rear Wheels 1997-1998 Harley-Davidson Big Twins 1997-1998 Dyna/FLT 1991-1999 XL - Chrome Plated
2 reviews $30.42

Colony #8155-30 Primary Cover Screw Kit 1936-1964 Harley-Davidson Big Twins - Chrome Plated
3 reviews $30.00

Bad&G Customs Harley Dyna Battery Cover Bag - Bolt-On Storage for 2006 and Up Models
22 reviews $89.99

Lowbrow Customs Radius Breather Bolts for Harley-Davidson Twin Cam - Brass
2 reviews $44.99

Colony #7812-12 Inner Primary Mounting Kit - 1955-1964 Harley-Davidson Panhead
$29.98

Cycle Standard 5 Post Ignition Key Switch Replaces Harley-Davidson OEM # 71500-36T - Black Bezel
9 reviews $44.94

Fast Eddy Co. No. 33 Tappet Block Alignment Screws - 3 Pack - 1/4-24 Thread
4 reviews $29.95

Gasbox Side Mount Headlight Bracket Set for Harley 39mm Narrow Glide Front Forks
5 reviews $29.95

LCFabrications Clutch Switch Pod Delete - Polished - for H-D
8 reviews $29.95

Cycle Standard Drilled Stainless Steel Brake Rotor - 10 inches - Replaces Harley-Davidson OEM# 44137-77A
1 review $89.80

Cycle Standard Drilled Stainless Steel Brake Rotor - 10 inches - Replaces Harley-Davidson OEM# 41807-73, 41813-79
2 reviews $89.80

Standard Motorcycle Products Points & Condenser Kit 1970-E1978 Harley-Davidson Shovelhead (L1978-1984 Big Twin if converted to points) 1971-E1978 XL
$17.95

Colony #3605-45 Horn Mounting Kit 1936-1941 Harley-Davidson All Models (except VL/RL)
$89.00

Drag Specialties Bicycle-Style Kicker Pedal
$44.24

James Gaskets Complete Rocker Cover Gasket Kit 1984-1991 Harley-Davidson Evo Big Twin
$88.41

Cycle Standard Foot Peg Spring Washers - 10 Pack
$11.04

Colony #3178-2 Piston Lock Ring Tool 1932-1973 Harley-Davidson Big Twins - Parkerized
2 reviews $44.00

Colony #2966-10 Grade 8 Head Bolt Kit 1977-1984 Harley-Davidson Shovelhead - CAD Plated
3 reviews $44.00

Colony #8408-1 Transmission Mainshaft Locknut & Washer 1936-1991 Harley-Davidson Big Twin 4 Speed
3 reviews $17.60

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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