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.

Custom Motorcycle Parts

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BEST SELLING BRANDS

TOP Custom Motorcycle Parts

Pingel 22MM Power-Flo Petcock - Hex Body - Chrome - Forward
$161.95

Gasbox Harley Evo Upswept Shotgun Exhaust Pipe Set for 1986-2003 Sportster Rigid Applications
9 reviews $299.99

Gasbox Full Rigid Frame 1986-2003 Harley-Davidson Sportsters - Sporty Tank Mounts
9 reviews $1,199.00

Gasbox Full Rigid Chopper Frame 1957-1985 Harley-Davidson Ironheads - 3" Up - Disc Brake rear - Sporty Tank Mounts
3 reviews $1,199.00

British Standard Stainless Steel Fork Seal Holders 1968-1970 Triumph
2 reviews $161.46

British Standard Rocker Cap/Valve Cover Set Triumph 350 500 650 Unit Twins
3 reviews $46.65

British Standard Stainless Steel Fork Cap/Top Nut 1968-1970 Triumph TR6C/TR6R/T120R/T150
2 reviews $38.51

EMGO Triumph 18 Tooth Transmission Drive Sprocket OEM #57-1917
$62.94

British Standard Zinc Plated Steel Extended Brake Rod for hardtail Triumph bobber or chopper
$39.86

British Standard Exhaust Spigot 1963-1971 Triumph 650 Bonneville Tiger
$45.58

British Standard Triumph Brake Rod Adjuster Nut 1/4"-26
$32.31

British Standard Triumph Brake Rod Adjuster Nut 1/4"-28
$26.52

British Standard Fork Seal Covers 650 750 Triumph Tiger Bonneville Trophy
$16.12

British Standard OIF Sump Gasket Triumph T140 750 A65 TR6 TR7
2 reviews $7.00

British Standard OIF Fork Seals Triumph T140 TR7 Bonneville Tiger BSA A65
1 review $16.06

British Standard Pancake Air Filter Triumph - Thread On Triumph TR6
4 reviews $57.98

Thrashin Supply Co. Mini Floorboard - Black
$379.95

Drag Specialties Vintage Style Half Moon Floorboards - Black
$160.01

Drag Specialties Vintage Style Half Moon Floorboards - Chrome
2 reviews $165.31

Burly Brand Razorback Foot Pegs - Black

$114.26 $126.95

Thrashin Supply Co. Shifter Peg - Black
$50.00

Red Fox Enterprises Smooth Cut Glass Dot - Red
$13.85

Red Fox Enterprises Prism Cut Glass Dot - Purple
$12.31

Red Fox Enterprises Prism Cut Glass Dot - Amber
$12.31

Burly Brand Complete Handlebar Cable/Brake Line Kit for 14" T-Bar Handlebars 04-06 XL Single Disc

$227.66 $252.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 10" T-Bar Handlebars 04-06 XL Single Disc

$194.36 $215.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 14" T-Bar Handlebars 07-13 XL Single Disc

2 $227.66 $252.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 12" T-Bar Handlebars 07-13 XL Single Disc

$227.66 $252.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 10" T-Bar Handlebars 07-13 XL Single Disc

$194.36 $215.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 14" T-Bar Handlebars 14-20 XL Single Disc w/o ABS

$251.06 $278.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 12" T-Bar Handlebars 99-00 FXDL/FXDS 99-05 FXDX 01-03 FXDXT

$399.56 $443.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 14" T-Bar Handlebars 07-11 FXD w/o ABS

$227.66 $252.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 10" T-Bar Handlebars 07-11 FXD w/o ABS

$194.36 $215.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 12" T-Bar Handlebars 08-11 FXDF

$399.56 $443.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 14" T-Bar Handlebars 12-17 FXDF 14-17 FXDL w/o ABS

$399.56 $443.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 12" T-Bar Handlebars 12-17 FXDF 14-17 FXDL w/o ABS

$399.56 $443.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 14" T-Bar Handlebars 12-17 FXD Single Disc w/o ABS

$251.06 $278.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 18" Ape Hanger Handlebars 00-06 FLST/C/F/N

$227.66 $252.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 16" Ape Hanger Handlebars 00-06 FLST/C/F/N

$227.66 $252.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 16" Ape Hanger Handlebars 07-10 FLST/C/F/N

1 $227.66 $252.95

Burly Brand Complete Handlebar Cable/Brake Line Kit for 14" Ape Hanger Handlebars 07-10 FLST/C/F/N

$227.66 $252.95

GMA Engineering 1 inch Clutch Control Lever - Black
$267.54

GMA Engineering 1 inch Clutch Control Lever - Chrome
$298.31

GMA Engineering 1 inch Clutch Control Lever with Switches - Polished Aluminum
$395.38

GMA Engineering 1 inch Clutch Control Lever - Polished Aluminum
1 review $240.31

GMA Engineering 1 inch Clutch Master Cylinder Assembly with Switches - Black - 9/16 inch Bore
$504.15

GMA Engineering 1 inch Brake Master Cylinder Assembly - Chrome - 5/8 inch Bore
$395.38

Cycle Standard Chrome Rear Seat Mounting Bracket
$29.30

Kustom Tech 11 inch Spring Struts - Chrome
$690.52

Biltwell Torker TPV Grips - Black - 1 inch
14 reviews $19.95

Biltwell Recoil TPV Grips - Black - 1 inch
9 reviews $19.95

Drag Specialties AGM Maintenance Free Battery 1997-2003 Harley-Davidson Sportster XL
5 reviews $107.94

Drag Specialties AGM Maintenance Free Battery 2004-Up Harley-Davidson Sportster XL 15-20 XG 500/750/750A
$89.94

Drag Specialties High Performance Battery 1986-1996 Harley-Davidson Sportster XL
1 review $164.99

Drag Specialties High Performance Battery 2000-Up Harley-Davidson Softails 99-17 FXD/FXDWG/FLD
$158.95

Drag Specialties Black Replacement Oil Tank 1986-1993 Harley-Davidson Sportster XL
$297.81

Goodridge PMCHD-024 - 3/8-24 inch I.F. Universal Front Brake Tee - Stainless Steel
2 reviews $68.95

Goodridge 45 Degree -3 to 1/8 inch NPT Fitting - Chrome
$26.95

Goodridge P691-03C Long 90 Degree Tube Adapter - Stainless Steel
$55.95

Goodridge P666-03C S Double Bend Tube Adapter - Stainless Steel
2 reviews $57.95

Goodridge 3/8-24 inch I.F. Universal Front Brake Tee - Ebony
$62.95

Goodridge Straight 7/16 inch Banjo Fitting - Stainless Steel
$29.95

Drag Specialties 5-Gallon Fat Bob Gas Tank for 1948-1984 Harley FX/FL - Raw Steel
$340.21

Drag Specialties Chrome Rear Fender Strut Set - 1982-85 Harley-Davidson Sportster XL
$204.53

Drag Specialties Replacement Rear Fender 1982-93 Harley-Davidson Sportster XL
1 review $155.95

Drag Specialties Replacement Rear Fender 1994-96 Harley-Davidson Sportster XL
$168.95

Drag Specialties Replacement Rear Fender 1997-98 Harley-Davidson Sportster XL
$168.95

Drag Specialties Replacement Rear Fender 1999-03 Harley-Davidson Sportster XL
2 reviews $162.95

Drag Specialties Replacement Rear Fender 2004-07 Harley-Davidson Sportster XL
$142.95

Drag Specialties Replacement Rear Fender 2008-09 Harley-Davidson Sportster XL 1200N
$130.95

Drag Specialties Replacement Rear Fender 2010-Up Harley-Davidson Sportster XL 883N/1200N/1200V/1200X
5 reviews $142.95

Drag Specialties Replacement Rear Fender 2006-08 Harley-Davidson FLHT/FLHR/FLTR
$154.95

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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Custom Motorcycle Parts FAQ

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