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

Colony #2651-10 Front Brake Shackle Rebuilding Kit 1939 Harley-Davidson Big Twin/45's
$90.88

Cycle Standard Motorcycle Tire Inner Tube - 3.25 / 3.50-19 inch Center Metal Valve
16 reviews $22.72

British Standard 530 Drive Chain For Vintage Triumph & British Motorcycles - 130 links
12 reviews $90.65

Goodridge 30326TC-CL Universal Braided Stainless Brake Line - 26" - Clear Coated
1 review $67.95

Cycle Standard 45 degree 3/8 inch/10mm Compression Banjo Fitting - Stainless
3 reviews $14.29

Drag Specialties 6-1/2 inch Forged Aluminum Handlebar Risers - Black
1 review $135.63

Drag Specialties Clutch Cable OEM #38618-68C Harley-Davidson 4 Speed Big Twin 1968-1986 - 60" Long
$67.79

Mooneyes Finned Points Cover for Harley-Davidson Sportsters
23 reviews $67.67

Lowbrow Customs 7mm Cloth 90 Degree Spark Plug Wire Sets - Black w/ Red Tracers
5 reviews $30.02

MVKustoms MVKustoms Hand Engraved Tail Light - Aluminum
$135.00 $180.00

Gasbox Chopper Bolt On Sissy Bar - 2004 & Up Sportsters
64 reviews $134.95

Cycle Standard Derby Cover - Chrome - 1994-2003 Harley-Davidson Sportster XL
$33.63

Lowbrow Customs Bolt On Mounting Bracket for Bates Kill Bill Switches - Universal Style - Tumbled Stainless
10 reviews $15.82

Cycle Standard Stainless Steel Exhaust Clamps 1-3/4 inch - Made in the USA
27 reviews $33.56

S&S Cycle Throttle Cable Guide - Use a CV Cable on an S&S Super E/G Carburetor
8 reviews $38.27 $40.95

EK Chains 530 ZVX3 Sealed Extreme Series X-Ring Chain - 120 Links - Black
4 reviews $267.79 $287.95

Cycle Standard Reproduction Long Skirted Eaton Style Bayonet / Cam Style Vented Gas Cap - Chrome
23 reviews $38.04

Cycle Standard Deluxe Black Harley-Davidson Brake Light Switch - Knucklehead, Panhead, Flathead (1937-1957) OEM #72004-39
18 reviews $33.24

Cycle Standard Replacement Rubber Foot Pegs 1952-1990 Harley-Davidson Sportsters
1 review $44.19

British Standard Capacitor Battery Eliminator replaces Lucas 2MC #54170009
36 reviews $44.12

Cycle Standard Clutch Hub Retainer With Rollers 1941-1984 Harley-Davidson Big Twins - OEM #37567-41A
1 review $29.41

Cycle Standard Sparto Polished Aluminum Tail Light - 12v
31 reviews $52.83

Kustom Tech Seventies 1 inch Clutch Lever - Black
1 review $263.60

S&S Cycle Manifold O-Ring Intake Seal S&S Cycle #16-0235
11 reviews $11.95

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

Cycle Electric Rectifying Regulator CE-445-04 - 2004-2005 Harley-Davidson FLT/FLH
$261.38 $279.80

Cycle Standard Sportster Rear Turn Signal Relocation Kit - Harley Sportster & Dyna
2 reviews $65.29

Lowbrow Customs Weld-On 6 inch Trailer Fender Brace / Mount - Wide Rigid Frame - Harley-Davidson Shovelhead Sportster etc
5 reviews $29.00

Cycle Standard Single Cable Throttle - 7/8 inch - Amal Style
14 reviews $37.28

Goodridge 30352TC-CL - Universal Braided Stainless Brake Line - 52" - Clear Coated
$86.95

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

LCFabrications Battery Box for Antigravity 12 and 16 Cell Batteries
6 reviews $130.00

V-Factor Motorcycle Parts MCM Slash Cut Drag Pipes 1957-1985 Harley-Davidson Sportster (Except 1979) - Chrome
2 reviews $129.99

Prism Supply Co. 22mm Petcock - Stainless Steel
$129.99

Goodridge 30321TC-CL Universal Braided Stainless Brake Line - 21" - Clear Coated
2 reviews $64.95

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

Cycle Standard Clutch Cable OEM #38620-96 Harley Sportster XLH 1200 1996-2003
4 reviews $51.48

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

Old-Stf Cycle Ironhead Sportster Rocker Box Loop Oil Lines - Brass
14 reviews $64.00

Goodridge Universal Braided Stainless Brake Line - 21" - Ebony
4 reviews $31.95

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

Goodridge Straight 3/8 inch/10mm Banjo Fitting - Ebony
6 reviews $15.95

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

Lowbrow Customs Moto Luggage Rack - Right Side - 1994-2003 Harley-Davidson Sportsters
$127.49 $149.99

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

Lowbrow Customs Harley-Davidson Ironhead Sportster EFI Replica Stock Style Gas Tank - 2.4 gallon
$254.33

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

D.I.D. Chains 530 VX3 X-Ring Chain - 120 Links
1 review $254.10 $282.33

Kustom Tech Classic 7/8 inch Clutch Lever Polished Aluminum
$252.25

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

Goodridge Universal Braided Stainless Brake Line - 30" - Ebony
2 reviews $35.95

Lowbrow Customs Axle Spacer Kit for Lowbrow Ribbed Spool Wheel - 39mm Narrow Glide Fork
5 reviews $25.16

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

After Hours Choppers BORT Tail Light - Aluminum
$125.00

Gasbox 24 inch Cigar Muffler 1958-1972 Harley-Davidson - Raw - OEM #65235-58
1 review $125.00

Goodridge 1/8 inch NPT Universal Rear Brake Tee - With Mount - Ebony
$49.95

Lowbrow Customs Four Piston Brake Caliper - Black Powdercoat
$249.00

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

EMGO 3 position Ignition Key Switch for your Motorcycle
33 reviews $27.65

Cycle Standard Air Cleaner Support Bracket 1988-2006 Harley-Davidson Sportster
3 reviews $49.68

Progressive Suspension Replacement Fork Springs 1988-2003 Harley-Davidson XL Models
$123.95

Progressive Suspension Replacement Fork Springs 2004-15 Harley-Davidson XL Models
$123.95

Cycle Standard Black Universal Solo Seat Hinge / Pivot Bracket - Bolt-on
12 reviews $27.53

Cycle Standard Curved License Plate Bracket - Black
2 reviews $49.51

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

British Standard Triumph / BSA / British Motorcycle Gas Tank Cap Made in the UK OEM #83-3875
44 reviews $41.24

Cycle Standard Round Motorcycle Mirror - Clamp On - Black with Retro Blue Glass
34 reviews $30.77 $37.81

Cycle Standard Clutch Cable OEM #38619-86A 1986-2003 Harley-Davidson 883 Sportster XL +8 inch Extended
$49.13

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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