What is the most important thing to decide before starting a custom motorcycle build?

Decide how the bike will be used first. Whether it’s for city riding, cross-country touring, camping, or track riding, each purpose points toward different part choices. Once the bike’s intended use is clear, selecting the right components becomes much easier. The How to Build a Bobber guide is a solid starting point for the full build process.

How do I make my motorcycle faster?

Start with a free-flowing air filter and an exhaust system that is properly tuned for your carburetor or fuel injection setup. For greater performance gains, consider increasing engine displacement with a big bore kit and improving airflow with custom camshafts or cylinder head work. Since each modification builds on the previous one, tuning after every upgrade is important.

What should I change first to make my motorcycle more comfortable?

Focus on three key areas: the seat, footpeg position, and handlebar setup. Handlebar rise and pullback typically have the greatest impact on comfort, handling, and riding posture. Investing in a quality seat can also significantly improve comfort on long rides.

Are custom Harley parts compatible with all Harley-Davidson models?

No. Fitment depends on the specific part and model year. Harley-Davidson aftermarket parts are often designed for particular platforms such as Big Twin, Sportster, or Softail models, and compatibility can vary by year range. Always review the fitment information on the product listing before ordering, and contact the supplier if compatibility is unclear.

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BEST SELLING BRANDS

TOP Custom Motorcycle Parts

Hugh's Handbuilt HHB Harley Davidson Sprocket Lock System - Raw Silver (Tumbled Finish)
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Parts Unlimited Heavy Duty 530 Motorcycle Drive Chain - 130 Links
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Gasbox Chrome Kick Back Sissy Bar - Flat Fender - Box Tail Light
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Gasbox Motorcycle Parts Chrome Square Top Sissy Bar - Round Fender - Box Tail Light — Gasbox Chrome Square Top Sissy Bar - Round Fender - Box Tail Light
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Led Sled Customs 5-3/4 inch Rolled Edge Fender for 16 inch Vintage Style Tires
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EK Chains 530 ZVX3 Sealed Extreme Series X-Ring Chain - 120 Links - Chrome
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Cycle Standard Round Motorcycle Mirror - Perch Mount - Chrome with Retro Blue Glass
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Led Sled Customs Internal Throttle Housing - 1 inch
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Gremlin Wiring The Sportster Treatment Custom Wiring Harness Kit 1991-1993 Harley-Davidson Sportster Models
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Gremlin Wiring The Sportster Treatment Custom Wiring Harness Kit 1986-1990 Harley-Davidson Sportster Models
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Gremlin Wiring The Sportster Treatment Custom Wiring Harness Kit 1997 Harley-Davidson Sportster Models
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James Gaskets Top End Gasket Kit 1991-2003 Harley-Davidson Sportster XL 883/1200
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Lowbrow Customs Spot Mirror by Lowbrow Customs
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Cycle Standard 5/16 inch Braided Stainless Fuel Line Kit
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American Prime Mfg. Brake/Mechanical Clutch Control Kit for 1 inch Handlebars - 11/16 inch Bore - Black
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American Prime Mfg. Brake/Mechanical Clutch Control Kit for 1 inch Handlebars - 9/16 inch Bore - Black
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Cycle Electric Alternator Kit 32 amp CE-32AL - 1988-1999 Harley-Davidson Softail
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Sully's Customs Sporty 2-Up Seat - Black Arched Pleat - 2004-2021 Harley-Davidson Sportsters
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Lowbrow Customs Spark Plug Wire Set For Use With Gasbox 1986-2003 Sportster Top Motor Mounts with Coil Relocation
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Cycle Standard 8 inch Black Mini Apes Handlebars for Harley-Davidson
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Lowbrow Customs S&S Super E and G Carb Extended Float Bowl Screws - Brass
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Lowbrow Customs Rear Chain Adjuster for 3/4 inch Axle - Universal Motorcycle or Custom Hardtail Use
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Drag Specialties Steel Clutch Plate Kit - 1968 - 1984 Shovelhead
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Cycle Standard 35MM Chrome Fork Tubes - 23-1/4 inch - Stock Length
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Lowbrow Customs 8mm Cloth 90 Degree Spark Plug Wire Sets - Black with Orange Tracers
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Cycle Standard Dished Wassell Peanut Frisco Mount Shallow-Tunnel Gas Tank - 2.2 gal
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Cycle Standard Dished Wassell Peanut Mid-Tunnel Gas Tank - 2.0 gal
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James Gaskets Top End Gasket Kit 1966-1984 Harley-Davidson Shovelhead
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Cycle Standard 1/4 inch NPT Lever Petcock - Chrome Plated Brass
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S&S Cycle Super E Carburetor Kit 1979-85 Harley-Davidson Sportster XL with VOES
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S&S Cycle Super E Carburetor Kit 1955-65 Harley-Davidson O-Ring Panhead
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Lowbrow Customs Beck Grips - Black - 1 inch
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Prism Supply Co. Bristol Breather - CV Carburetor - Tumbled
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Cycle Standard Ribbed Steel Fender 6 inch Width
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Mid-USA 21 x 2.15 Black Front Spool Wheel
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Cycle Standard 41MM Chrome Fork Tubes 1949-1976 Harley-Davidson FL - 20 inch - Stock Length
$178.40

Cannonball Extended Clutch Release Lever for Stealthstarter Electric Starter 1936-1964 4 Speed Harley-Davidson Big Twins
1 review $101.88

S&S Cycle Tear Drop Air Cleaner - Black - 1991-2006 Harley-Davidson Sportster XL
1 review $356.36 $395.95

Cycle Standard Rear Brake Master Cylinder Assembly - Chrome - 2008-2021 Harley-Davidson FLHT/FLHX/FLHR/FLTR/FLTRX/FLTRU/FLTRK
2 reviews $177.84

Bates Bates Kill Bill Motorcycle Battery Disconnect Switch - Brass Knob
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Airspeed Cycles T-Bar Handlebars - 12 inch Rise - 1 inch - Stainless Steel
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Airspeed Cycles T-Bar Handlebars - 10 inch Rise - 1 inch - Stainless Steel
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Cycle Electric Alternator Kit CE-84T-07 2007-2008 Harley-Davidson FLH/FLT
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Parts Unlimited Heavy Duty 530 Motorcycle Drive Chain - 120 Links
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Cycle Standard Frisco Mount 2007-2022 EFI Sportster Gas Tank - Standard Width - 2.5 gallon
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Cycle Electric Alternator Kit CE-85T 2008-2011 Harley-Davidson Dyna
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Mooneyes Rat Fink Head License Plate Bolts - Green
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Lowbrow Customs Black Steel Solo Seat Hinge / Pivot Bracket - Weld-On
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British Standard Oil Pump unit Triumph Motorcycles 1963-1980 - Made in the UK OEM #70-9421
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S&S Cycle High Performance Hydraulic Tappet Set - 1984-99 Harley-Davidson Big Twin 1986-90 XL
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Airspeed Cycles Pre-Unit Handlebars - 1 inch - Stainless Steel
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Progressive Suspension Heavy-Duty Fork Springs 1999-2005 Harley-Davidson FXD FXDC FXDL 2004-15 XL Models
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Gasbox Axle Mount License Plate Bracket - Vertical - Left Side Mount - 3/4 Inch Axles
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Lowbrow Customs Black Steel Solo Seat Hinge / Pivot Bracket - 1963-70 Triumph
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Prism Supply Co. 4 inch Mid-Pegs - Harley-Davidson Cone Shovelhead and Evo Big Twins - Open Primary
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Lowbrow Customs Radius Breather Bolts for Harley-Davidson Evo - Brass
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Lowbrow Customs Belt to Chain Conversion Kit Harley 883 Sportster 1995-2003 - Black Sprocket
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Andrews EV27 Camshaft - 1984-1999 Harley-Davidson Big Twin
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Cycle Standard 49mm Fork Leg Assembly Rebuild Kit 2016-2021 Harley-Davidson XL1200X 2018-2023 Softails 2014-2023 FLHT/FLHR/FLHX/FLTRX/FLTRU/FLTRK
1 review $98.23

Cycle Standard Black 12V Square Coil 1948-60 Harley-Davidson Big Twins
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Lowbrow Customs DIY Motorcycle Fender Strut Mounting Kit for Custom Chopper & Bobber
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Gasbox S&S Carburetor Support Bracket - Harley-Davidson Shovelhead - Tumbled Stainless
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Kustom Tech Inverted Bar End Control Lever- Raw Brass- Brake or Clutch
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Til Death Cycles 39mm Harley-Davidson Cartridge Eliminator Kit
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Prism Supply Co. Sportster Jockey Shift Kit - 1991-2003 Harley-Davidson Sportster
1 review $224.99

Cycle Standard Z Bar Handlebars - 1 inch - 8 inch Rise - Chrome
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Gasbox Strong Arm Top Motor Mount for Crank Start Key Switch - 1984-1999 Harley-Davidson Big Twin Evolution
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American Prime Mfg. Cast Alternator Shroud Cover for Open Belt Drives fits 1970-2006 Harley-Davidson Big Twins - Raw Finish
1 review $33.68

EK Chains 530 ZVX3 Sealed Extreme Series X-Ring Chain - 150 Links - Black
1 review $334.75 $359.95

Lowbrow Customs Good Luck Fuel Reserve Bottle
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Cycle Standard Mega Nut Sprocket and Pulley Lock Nut for 1993+ Harley Sportster, Big Twin, and Twin Cam
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CUSTOM MOTORCYCLE PARTS FOR HARLEY, TRIUMPH, AND BSA BUILDS The parts you choose define the bike. OEM keeps it stock. Aftermarket opens up fitment, finish, and function options the factory never offered. Whether you are sourcing a direct replaceme...

CUSTOM MOTORCYCLE PARTS FOR HARLEY, TRIUMPH, AND BSA BUILDS

The parts you choose define the bike. OEM keeps it stock. Aftermarket opens up fitment, finish, and function options the factory never offered. Whether you are sourcing a direct replacement for a worn component or tracking down a specific piece to finish a chopper or bobber build, the catalog here covers custom Harley parts, BSA, and vintage Triumph across hundreds of categories.

WHY BUILDERS GO AFTERMARKET

Stock parts do the job they were designed for. Aftermarket custom motorcycle parts do what the builder needs:

Fitment Where OEM Falls Short: Finding correct OEM components for older Harley Big Twin, BSA, or vintage Triumph motorcycle parts gets harder every year. Aftermarket and reproduction parts fill those gaps with components built to the same spec or better.
Material and Finish Options: Many aftermarket parts come in finishes the factory never offered, including billet aluminum, stainless, black oxide, and chrome. The part matches the direction of the build rather than fighting it.
Universal Parts for Custom Work: Raw, unfinished, and universal parts give you a starting point to cut, shape, and mount to your specific frame and geometry. That is something a stock replacement never offers, and it is where bobber motorcycle parts and chopper builds get interesting.
Cost and Availability on Older Platforms: For british motorcycle parts and vintage Triumph or older Harley platforms, reproduction aftermarket parts are often the more practical choice on both availability and price.

BRANDS AND WHAT WE STOCK

The catalog covers hardware, fabrication parts, engine components, controls, lighting, and everything in between. Key brands include Colony for hardware and fasteners and Mid-USA for drivetrain and engine components. Fitment data is listed on each product page. If you are not sure what fits your year and model, the team is reachable by chat, phone, or email.

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