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

Kustom Tech Classic 7/8 inch Master Cylinder - Black
$517.14

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

Cycle Standard Stock Style Gas Tank for 2007-2022 Harley-Davidson Sportster EFI - 2.2 gallon
2 reviews $257.71

Cycle Standard Sprocket Cover - Polished Aluminum - 1991-2003 Harley-Davidson Sportster OEM #34911-91
42 reviews $102.67

Lowbrow Customs Finned Heat Shield - 6 inch
25 reviews $73.16

Lowbrow Customs Shorty Front Fender - Harley-Davidson 1973-up XL FX FXR 35mm 39mm Narrow Glide Front Forks - OEM #59031-83
68 reviews $102.37

Cycle Standard Crocker Style LED Tail Light - Aluminum
$85.00

Prism Supply Co. Motor Mount Mid-Pegs for Harley-Davidson Big Twins - Stainless Steel
$84.99

Goodridge Universal Braided Stainless Brake Line - 18" - Ebony
$29.95

Cycle Electric Rectifying Regulator CE-445-02 - 2002-2003 Harley-Davidson FLT/FLH
$254.36 $272.28

American Prime Mfg. Cast Alternator Shroud Cover for Open Belt Drives fits 1970-2006 Harley-Davidson Big Twins - Raw Finish
1 review $33.68

James Gaskets Top End Gasket Kit 1966-1984 Harley-Davidson Shovelhead
$71.99

S&S Cycle Precision Hydraulic Tappet Set 2000-Up Harley-Davidson XL 2017-Up M8 1999-17 Twin Cam
$279.95

Rich Phillips Seat Co. Cobra 2-Up Seat - Black Leather - Horizontal Pleat - for Harley OEM Factory Rigid Frames
$500.00

Rich Phillips Seat Co. Cobra 2-Up Seat - Black Leather - Diamond - for Harley OEM Factory Rigid Frames
$500.00

Led Sled Customs Internal Throttle Housing - 1 inch
3 reviews $125.00

Mullins Chain Drive 39mm Super Narrow Triple Trees Set
19 reviews $500.00

Prism Supply Co. Prism Supply Co. PS-41 Tail Light - Polished
$124.99

Gremlin Wiring The Sportster Treatment Custom Wiring Harness Kit 1986-1990 Harley-Davidson Sportster Models
3 reviews $249.95

Gasbox Complete Hardware Kit for Gasbox Rigid Big Twin Frames with Frisco Tanks
$99.95

Cycle Standard 1936-1986 Harley-Davidson Big Twin 4 Speed Kickstarter Rebuild Kit
2 reviews $124.69

Cycle Standard Round Motorcycle Mirror - Clamp On - Chrome with Retro Blue Glass
26 reviews $41.50

Lowbrow Customs Radius Breather Bolts for Harley-Davidson Evo - Black ED
51 reviews $49.49

Cycle Electric Rectifying Regulator CE-204 - 1981-1988 Harley-Davidson FX FL
9 reviews $164.51 $176.10

Cycle Electric Rectifying Regulator CE-325L - 2000 Harley-Davidson FLST/FXST/Softail
1 review $164.50 $176.09

Kibblewhite Precision Machining Heavy Duty Clutch Spring Set - 1966 - 1984 Shovelhead
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Cycle Standard Bobbed Undrilled Rear Fender - 2004 & Up Harley Davidson Sportster XL Models
5 reviews $163.91

Lowbrow Customs Mounting Kit for WX Gas Tanks - 1985-1999 Harley-Davidson Softails
4 reviews $70.10

Cycle Standard Chrome 12V Square Coil 1948-60 Harley-Davidson Big Twins
$122.59

Gasbox Antigravity 12 Cell Universal Battery Box - Tumbled Aluminum
12 reviews $69.95

Kustom Tech DeLuxe Brass Cable Register for KustomTech Clutch Levers
7 reviews $69.93

Cycle Electric Rectifying Regulator CE-320L - 1989-1999 Harley-Davidson Softails
15 reviews $162.71 $174.17

Cycle Standard 6 inch Wide Flat Trailer Fender with Bobbed End - Steel
9 reviews $162.41

Pingel 22MM Power-Flo Petcock - Hex Body - Brass - Inward
$161.95

Goodridge PMCHD-016C 1/8 inch NPT Universal Rear Junction Block with Brake Light Switch Mount - Stainless Steel
4 reviews $80.95

Lowbrow Customs Solo Seat Bolt-On Spring Mounts - Black
17 reviews $60.71

Goodridge 35 Degree 3/8 inch/10mm Banjo Fitting - Stainless Steel
8 reviews $17.95

Cycle Standard Choke Knob Enricher for Harley-Davidson S&S Super E and G Carburetors - Brass
8 reviews $53.64

British Standard Clutch Plates - Fiber - for Triumph / BSA Motorcycles
24 reviews $80.35

Arlen Ness Big Sucker Stage 1 Air Filter Kit - Chrome - 1988-2020 Harley-Davidson XL
1 review $240.00

Sully's Customs Sporty Solo - Black Horizontal Pleated - 1982-2003 Harley-Davidson Sportsters
21 reviews $159.99

Gasbox Panhead Exhaust Pipe Set 1958-1964 Harley-Davidson Swingarm FL FLH 74 ci - Bare Steel
1 review $239.95

James Gaskets Top End Gasket Kit 2007-Up Harley-Davidson Sportster
$119.93

Lowbrow Customs Belt To Chain Conversion Kit 1995-1999 Harley-Davidson Softail - Black Sprocket
$159.34

Goodridge PBL775-03C Banjo Bolt Brake Switch 3/8-24 Thread
35 reviews $31.95

LePera Signature II Two Piece Seat - Diamond - Rigid Frame
$479.00

LePera Signature One Piece 14" Back Seat - Diamond/Buttons - Rigid Frame
2 reviews $479.00

LePera Baron II One Piece Seat - Pleated - Rigid Frame
1 review $479.00

Til Death Cycles 49mm Harley-Davidson Front End Extended Damper Tube Kit
5 reviews $119.12

Cycle Electric Rectifying Regulator CE-445 - 1995-1996 Harley-Davidson FLHYCUI/FLHTCI/FLCUI
$238.18 $254.96

S&S Cycle Standard Band Intake Manifold - Super B/E - 1978-1984 Harley-Davidson Shovelhead
1 review $121.95

Gasbox CV Choke Mount - Tumbled Stainless
26 reviews $18.99

Cycle Standard Chrome Fork Neck Cup Kit for 1949-1987 Harley-Davidson Big Twins
$52.50

Goodridge Universal Braided Stainless Brake Line - 42" - Ebony
5 reviews $42.95

Goodridge Universal Braided Stainless Brake Line - 34" - Ebony
5 reviews $42.95

Gates Corporation 3/8 inch Black Fuel / Oil Line - By The Foot
15 reviews From $14.75

Wassell 930 Left Side 30mm Concentric Carburetor Triumph BSA Norton
1 review $235.94

Airspeed Cycles Rabbit Ears Handlebars - 12 inch Rise - 1 inch - Stainless Steel
$235.00

8mm Suppression Core Cloth Spark Plug Wire Sets - Black with Red tracers — Lowbrow Customs 8mm Cloth 90 Degree Spark Plug Wire Sets - Black with Red tracers
34 reviews $36.03

Lowbrow Customs 8mm Cloth 90 Degree Spark Plug Wire Sets - Black with Orange Tracers
49 reviews $36.03

Lowbrow Customs Throttle Housing 1981-1995 Harley Thread-In Single Cable - Aluminum - 1 inch
14 reviews $93.46

Drag Specialties Clutch Cable Harley-Davidson 4 Speed Big Twin 1968-86 - 56" Long
2 reviews $66.73

Podtronics Podtronics Regulator / Rectifier - Triumph / BSA
48 reviews $77.67

Cycle Standard Asphalt Wire Loom - 10 foot x 1/4 inch
28 reviews $23.24

Cycle Electric Rectifying Regulator CE-602-08 - 2008-2016 Harley-Davidson Dyna Models
$231.04 $237.05

Red Fox Enterprises Glass License Plate Round Reflector - Red
13 reviews $14.00

Drag Specialties Ape Hanger/Narrow TBW Handlebars - 1 inch - 12 inch Rise - Chrome
$153.69

Cycle Standard Replacement CV Carb Choke Cable 1992-2003 Harley-Davidson XL 1995-1997 Buell
1 review $27.12

Gasbox S&S Carburetor Support Bracket - Harley-Davidson Shovelhead - Tumbled Stainless
55 reviews $21.95

Cycle Standard 41MM Chrome Fork Tubes 1984-1999 Harley-Davidson FXWG/D FXST - 34-1/4 inch - 10 Over
1 review $229.45

Cycle Standard Grooved Stainless Steel Hidden/Internal Stop Fork Neck Cup Kit 1949-1987 Harley-Davidson Big Twins
1 review $114.71

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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