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

Cycle Standard Small Flush Mount Pop-Up Gas Cap & Weld-In Bung - Vented - Chrome
63 reviews $102.66

Cycle Standard Wassell Peanut Frisco Gas Tank 2.1 gallon
2 reviews $220.00

Cycle Standard EFI To 22mm Gas Tank Petcock Adapter - 2007-Up Harley-Davidson XL
12 reviews $109.74

Cycle Standard 3 position Ignition Key Switch Replaces Harley-Davidson OEM #71425-77 - Chrome Bezel
86 reviews $34.64

Cycle Standard Z Bar Handlebars - 1 inch - 6 inch Rise - Chrome
35 reviews From $108.96

Cycle Standard Bates Style Rectangular Motorcycle Headlight - Yellow Lens - Chrome
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Kustom Tech Single Throttle Cable Kit in Brass for S&S Super E / G
24 reviews $144.19

Morris Magneto MM2 Magneto for 1971-1980 Harley-Davidson XL - Brushed Finish
$1,295.00

Cycle Electric Stator CE-3845-02 for 2002 - 2005 Harley-Davidson FLH and FLT Models
11 reviews $143.49 $153.60

Sully's Customs Skinny Style Seat - Black Diamond - 1982-2003 Harley-Davidson Sportsters
2 reviews $214.99

Gasbox Shovelhead Exhaust Pipe Set 2-into-1 for 1970-84 Harley Cone - Bare Steel OEM #65435-70
29 reviews $214.99

Performance Machine Performance Machine Classic 4 Piston Brake Caliper - Chrome
2 reviews $426.95

Drag Specialties Friction Clutch Plate Kit (5-Pack) for 1968-1984 Harley Shovelhead
14 reviews $84.75

Lowbrow Customs King P-Nut Frisco Gas Tank - 2.4 Gallon for 1986-2003 Harley Sportster
44 reviews $251.57

Cycle Standard 8 inch Forged Aluminum Handlebar Risers - Chrome
1 review $125.69

Mid-USA Front Caliper Bracket for Springer Models - Chrome
3 reviews $156.00

Kustom Tech DeLuxe 1 inch Clutch Lever Polished Aluminum
8 reviews $246.43

Bar-None Moto BNM Two-Up Bolt On Sissy Bar For Rogue Fender - 1958-1984 Harley-Davidson Panhead/Shovelhead
$307.02

Sully's Customs Solo Seat - Black Horizontal Pleat - Rigid Frame
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Cycle Standard Z Bar Handlebars - 1 inch - 6 inch Rise - Black
40 reviews From $85.73 $104.63

Cycle Standard 1936-1986 Harley-Davidson Big Twin 4 Speed Complete Kickstarter Rebuild Kit
$305.68

Cycle Standard Rubber-Mount Quickbob Gas Tank 1986-2003 Harley-Davidson Sportster
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Cycle Standard Isolator Motor Mount - Rear - 1999-2017 Harley-Davidson Dyna
3 reviews $135.63

Mid-USA 19 x 2.5 Chrome Complete Front Wheel Fits Harley-Davidson Sportster XL & FX 1984-1999
2 reviews $305.05

Lowbrow Customs KR Style Bolt-On Hardtail Rear Frame Section for 1967-1978 Harley-Davidson Ironhead Sportster
34 reviews $405.59

ODI Vans V-Twin Lock-On Cable Throttle Grips by ODI - Black/Matte Black - 1"
3 reviews $75.95

FNA Custom Cycle Twisty Transmission Plate - Harley-Davidson Big Twin 4 Speeds
3 reviews $240.00

Biltwell Dual Cable Cast Whiskey Throttle - Black - 1 inch
29 reviews $99.95

Gasbox Full Rigid Chopper Frame 2004-2022 Harley-Davidson Sportsters - 3" Up - Sporty Tank Mounts
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Lowbrow Customs Super Banana Gas Tank - Mid Tunnel - 2.6 Gallon
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Lowbrow Customs Rear Caliper Bracket for Rigid Harleys - 11.5" Rotor - 3/4" Axle - Raw
10 reviews $108.34

Lowbrow Customs Rear Caliper Bracket for Rigid Models with 11-1/2 inch Rotors - 3/4" Axle - Black
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Cycle Electric Alternator Kit CE-94T-14 90 Series 56 Amp 2014-2016 Harley-Davidson FLH/FLT - Air Cooled
$593.97 $635.83

FNA Custom Cycle Pop Top Oil Pressure Indicator
16 reviews $118.57

Mooneyes MC Motorcycle Chopper Oil Tank for Harley-Davidson Choppers
10 reviews $395.00

American Prime Mfg. Brake/Mechanical Clutch Control Kit for 1 inch Handlebars - 11/16 inch Bore - Chrome
$394.30

Amal Carburetor Gasket, Float and Complete Rebuild Kit for 626 928 930 932 Concentric Carbs
15 reviews $98.04

Mooneyes MOON Spun Aluminum Air Cleaner for CV or S&S Super E/G Carburetors
13 reviews $98.00

Mid-USA Internal Twist Throttle Housing - 1 inch
5 reviews $97.80

Choppahead Clamp On Aluminum Oil Tank - 1954 - 1970 Triumph 650 - Finned Ends
10 reviews $293.33

Cycle Standard 35MM Chrome Fork Tubes - 27-1/4 inch - 4 Over
5 reviews $194.89

Lowbrow Customs Rear Suspension Delete Kit 1984-1999 Harley-Davidson Softails
$194.66

Antigravity Batteries Antigravity Lithium Small Case Battery - 16 Cell - AG-1601
2 reviews $289.99

Cycle Standard Chrome Fork Neck Cup Kit with Fork Stops for 1949-1987 Harley-Davidson Big Twins
1 review $52.59

Cycle Electric Alternator Kit CE-81AR 1989-1996 Harley-Davidson FLH/FLT/FXR
$575.74 $616.31

Sully's Customs Camel Back Seat - Diamond Pattern - 1982-2003 Harley Sportsters
13 reviews $229.99

Cycle Electric CE-8010-08 Stator Replacement for 2008-2017 Harley Dyna & Softail OEM #30017-08
22 reviews $163.88 $175.43

Shinko Motorcycle Tires Super Classic 270 Front/Rear Motorcycle Tire - 4.50-18 70H
1 review $142.95

Cycle Electric Alternator Kit CE-71AR 1980-1988 Harley-Davidson FLH/FLT/FXR With 5 Speed Rubber Mount Motors
$571.48 $611.75

Cycle Electric Rectifying Regulator CE-320 - 1989-1996 Harley-Davidson FL 1989-1998 FXD FXR
23 reviews $162.71 $174.17

Cycle Electric Rectifying Regulator CE-203 - 1976-1980 Harley-Davidson Big Twins
12 reviews $162.21 $173.64

Airspeed Cycles Narrow Bottom 6 Bend Handlebars - 8 inch Rise - 1 inch - Stainless Steel
$225.00

Lowbrow Customs Black Heart Motorcycle Mirror - Perch Mount - Black
35 reviews $46.84

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

Lowbrow Customs Forward Control Kit 2004-2013 Harley-Davidson Sportsters - Black Anodized
$279.99

Gasbox Exhaust Pipe Set 2-into-1 1970-84 Harley Cone Shovelhead - Chrome OEM #65435-70
15 reviews $279.99

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

Shinko Motorcycle Tires Super Classic 270 Whitewall Front Motorcycle Tire - 3.00-21 57S
$122.95

EMGO Cocktail Shaker Mufflers - Upswept - Left and Right Side - for 1-1/2 to 1-3/4 inch Exhaust Pipes
31 reviews $221.23

Cycle Electric LeBeef CE-540L-CP Replacement Regulator for use on 12v Harley-Davidson Generators
$275.99 $295.43

Mid-USA Four Piston Brake Caliper - Black Anodized
3 reviews $275.00

Lowbrow Customs Straton Springer Front End - 24" Length (6" Over) - Black
$1,099.00

Lowbrow Customs Straton Springer Front End - 20" Length (2" Over Std.) - Black
$1,099.00

Lowbrow Customs Straton Springer Front End - 18" Length (Std.) - Black
$1,099.00

Lowbrow Customs Straton Springer Front End - 16" Length (2" Under Std.) - Black
$1,099.00

Gasbox Top Motor Mount - 1957 - 1985 Ironhead Sportster XL - With Coil And Crank Key Start Mount
21 reviews $49.95

Dynatek Performance Electronics 3 Ohm Dual Output HD - For Use With Dyna Electronic Ignitions
3 reviews $144.43

Lowbrow Customs Frisco Mount Sportster Gas Tank - Narrow - Bayonet Filler - 2.1 gallon
7 reviews $219.30

Cycle Electric Stator CE-8999 for 1989-1999 Harley-Davidson Evo Big Twins with 32 amp Alternator
27 reviews $109.29 $116.99

Lowbrow Customs Bolt-On Hardtail Frame 1963-1970 Triumph - Unit 650 c.c.
39 reviews $363.99

Gremlin Wiring Gremlin Wiring Harness Kit for 1989-1999 Harley-Davidson Softail Models
$359.95

Cycle Electric Alternator Kit CE-74TR 1999-2003 Harley-Davidson Dyna Models
$537.91 $575.81

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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