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 Domed Points Cover OEM #32588-70A for Harley-Davdison 1970 & Up XL 1970 - 1999 Big Twin
20 reviews $20.03

Cycle Standard 39MM Chrome Fork Tubes - 31 inch - 6 Over
22 reviews $257.77

Cycle Standard HD Factory Style Grips - Black 1 inch OEM #56206-81A
22 reviews $19.81

Cycle Standard Clutch Plate Kit 1968-1984 Harley-Davidson Big Twins
$85.71

Cycle Standard 3-1/2 inch Forged Aluminum Handlebar Risers - Black
$85.08

Hawthorn Co. Cycles Battery Box 4L-BS w/ Breaker Mount for OEM Harley-Davidson Horseshoe Tanks
$85.00

Cycle Standard Single Gauge Bracket - Black - 1995-2011 Harley-Davidson XL883 1995-2005 FXD Models
2 reviews $84.99

Colony #7704-2 Rear Chain Adjusters - 1936-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead - Chrome Plated
11 reviews $18.16

Fork Co., Ltd Sixties Narrow Handlebars - Stainless Steel
3 reviews $251.94

Cycle Standard 8-1/2 inch Pullback Handlebar Riser Set - Black
$125.27

Colony #3019-8 Head Bolt Set 12 Point 1985-1991 Harley-Davidson Big Twin 1986-1992 XL - Zinc Plated
2 reviews $83.00

Colony #3411-15 Hex Bolt & Washer Kit Rear Wheel 1973-1998 Harley-Davidson Big Twin 1979-1990 XL - Zinc Plated
1 review $27.50

Lowbrow Customs Radius Breather Bolts for Harley-Davidson Twin Cam - Brass
3 reviews $49.49

Lowbrow Customs Radius Breather Bolts for Harley-Davidson Twin Cam - Chrome Plated
19 reviews $49.49

Unity Manufacturing Solid Pushrod Wrench Set
9 reviews $35.00

Colony #9696-18 Saddle to Seat Tee Mounting Kit 1934-1980 Harley-Davidson All Models (Except FX/XL) - Parkerized
5 reviews $35.00

Lowbrow Customs Rocker Box Oil Pressure Gauge Adapter Fitting - Chrome - 1971 - Up Harley-Davidson Shovelhead, 1971 - 1985 Sportster
9 reviews $30.51

Colony #7142-4 Knucklehead Type Rocker Arm Shaft End Plug - 1971-1985 Harley-Davidson Shovelhead 1971-85 Sportster - Chrome Plated
7 reviews $34.85

Lowbrow Customs PVC Spacer Kit For Extended 41mm Fork Tubes
$14.26

Cycle Standard 22mm Petcock Harley-Davidson Style - Chrome - Right Hand Outlet
18 reviews $40.05

Marion Metalworks Universal Headlight Mounting Bracket/Eyebrow Delete
18 reviews $60.00

Gasbox 4 Speed Transmission Mounting Plate for 1965 - 1979 Harley-Davidson Big Twins OEM #47698-65
2 reviews $59.95

Lowbrow Customs Pursuit Shifter Peg for Harleys - Black Aluminum
44 reviews $34.21

Colony #8618-20 Big Bore Headbolt & Washer Kit 1949-Up Harley-Davidson Panhead/Shovelhead - Black
4 reviews $47.80

Lowbrow Customs 39mm Low Profile Fork Caps - Brass

14 $58.02

S&S Cycle H-Grind Camshaft - 1948-1969 Harley-Davidson Big Twin
1 review $230.36 $255.95

Prism Supply Co. Darlington Air Cleaner - CV Carburetor - Polished
$229.99

Fast Eddy Co. No. 2 Pinion Nut Socket 1954-1992 Harley Big Twins
18 reviews $37.95

Andrews J-Grind Camshaft - L1977-1984 Harley-Davidson Shovelhead
$226.76 $251.95

Lowbrow Customs Blade Levers - Polished - 1996 - 2003 Harley Davidson Sportsters and 1996 - 2017 Dyna / Softail / Touring Models
31 reviews $45.25

Cycle Standard Replacement Dished Sprocket - Chrome - 47 Tooth - 1973-1985 Harley-Davidson Big Twin 1979-81 XL
$75.05

After Hours Choppers Stainless Steel Ratchet Top Shifter - 15 Degree Lay Back - Raw
$225.00

Gasbox Front Exhaust Pipe 1966-1969 Harley-Davidson Shovelhead - Chrome - OEM #65443-66
2 reviews $75.00

Lowbrow Customs Domed Steel Motorcycle Oil Tank for H-D Sportster Big Twin and Universal Choppers
23 reviews $224.94

Gasbox Strong Arm Top Engine Mount For Early Big Twin Engines In Gasbox Frames
$74.95

James Gaskets Primary Cover Gasket 1965-1988 Harley-Davidson Big Twin
$24.91

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 32-1/4 inch - 8 Over
$223.64

Colony #2318-1 Sprocket Shaft Bearing Retainer Installation Tool 1955-1968 Harley-Davidson Big Twin
4 reviews $74.45

James Gaskets Fork Seal Rebuild Kit 1949-1977 Harley-Davidson FL
$22.20

Drag Specialties Dual Gauge Bracket - Black - 1995-2001 Harley-Davidson XL1200 99-05 FXDX 95-00 FXDX-CONV
2 reviews $219.37

Drag Specialties Dual Gauge Bracket - Chrome - 1995-2001 Harley-Davidson XL1200 99-05 FXDX 95-00 FXDX-CONV
$219.37

Drag Specialties Wheel Bearings and Races - Replaces Harley-Davidson OEM #9052
3 reviews $27.37

Cycle Standard Bayonet / Cam Harley Style Vented 2" Gas Cap - Black
33 reviews $19.84

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
2 reviews $54.14 $56.31

Lowbrow Customs Narrow Axle for 39mm Tapered Fork Lowers
$24.04

Drag Specialties 3-1/2 inch Pullback Handlebar Riser Set - Black
$108.07

Arlen Ness Big Sucker Stage 1 Air Filter Kit - Chrome - 1993-1999 Harley-Davidson Evolution Big Twin
2 reviews $215.96 $239.95

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

Bates Linkert 4-Bolt Carb Throttle Conversion Kit 1940-65 Harley-Davidson Knucklehead and Panheads
3 reviews $71.73

Colony #7516-4 Aluminum Pushrods for Hydraulic Lifters - 1966-1983 Harley-Davidson Shovelhead
5 reviews $71.50

Lowbrow Customs Lowbrow Customs Springer Buckhorn Handlebars - 1 inch - Chrome
$214.23

Cycle Standard Springer Style Bottom Mount Headlight - Chrome
11 reviews $107.03

Cycle Standard Ride-On Engine Stablizer Link Kit 1982-94 Harley-Davidson FXR 91-94 Dyna 80-08 Touring
$106.96

Cycle Standard Blackout Taillight 1999-2015 Harley-Davidson FL/FX/Sportster (except 12-15 XL1200C/CP)
2 reviews $71.27

Lowbrow Customs Rocker Box Oil Pressure Gauge Adapter Fitting - Brass - 1971 - Up Harley-Davidson Shovelhead, 1971 - 1985 Sportster
8 reviews $30.51

Cycle Standard Domed Slim Chrome Screw-In Harley Style Gas Cap 1996 & up
16 reviews $30.25

Cycle Standard Screw-In Harley Stock Style Vented Gas Cap - 1982-1995 - Black
$23.51

Lowbrow Customs Competition Screw-In Gas Cap for Harley-Davidson 1996 & later - Polished
41 reviews $42.30 $51.64

Cycle Standard Transmission Sprocket .5" Offset - 23 Tooth - 1991-2006 Harley-Davidson XL 1986-2006 Big Twin 5-Speed
$70.34

Lowbrow Customs Bolt On 3/4 inch Ignition Key Switch Bracket for Harley-Davidson Four Speed Transmissions - Tumbled Stainless
13 reviews $26.37

Lowbrow Customs Bolt On 13/16 inch Ignition Key Switch Bracket for Harley-Davidson 4 Speed Transmissions - Tumbled Stainless
9 reviews $26.37

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

Lowbrow Customs Belt to Chain Conversion Kit Harley-Davidson Dyna 2000-05 Mag Wheels - Black Sprocket
3 reviews $209.99

Gasbox Strong Arm Top Motor Mount 1948-84 Harley Big Twins
7 reviews $69.95

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

Colony #2094-4 Handlebar Riser Allen Bolt Kit 1/2-13 x 2-1/2" Harley-Davidson FLST Models - Chrome Plated
5 reviews $14.89

Colony #3647-10 Sprocket Bolt Kit 1973-Up Harley-Davidson Big Twin & Sportster Chain Drive Models - Chrome Plated
$26.00

Cycle Standard 5 Post Ignition Key Switch Replaces Harley-Davidson OEM #71500-36T - Black Bezel
10 reviews $51.91

Cycle Standard 39mm Damper Tube Kit - 9.5" - 1994-1996 Harley-Davidson Sportster XL 1995-2017 FXD OEM# 45925-94
$69.00

James Gaskets Primary Cover & Inspection Cover Gasket Kit With Seals 1984-1986 Harley-Davidson FL/FLH/FX/FXE/FXWG 1984-1988 Softail
$68.87

S&S Cycle Quickee Adjustable Pushrod Set - 1984-1999 Harley-Davidson Big Twin
2 reviews $206.26 $224.95

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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