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 Paradox Red/Amber LED Tail Light / Turn Signals - Smoke Lens - Black
19 reviews $145.72

Cycle Standard Passenger Peg Mounts - 1983-2003 Harley-Davidson XL - Chrome - OEM #50610-86T
$48.48

Cycle Standard 7MM Universal Spark Plug Wire Set - 20 inch
2 reviews $29.07

Cycle Standard Universal Replacement Baffle for 1-3/4" Exhaust Pipes
1 review $13.19

Monster Craftsman Clamp on Tensioner 530 Sprocket - 1.125 inch Tubing
1 review $145.00

Monster Craftsman Powell Peralta Bolt on Tensioner
2 reviews $145.00

Goodridge PMCHD-011C 1/8 inch NPT Universal Rear Junction Block with Brake Light Switch Hole - Stainless Steel
2 reviews $28.95

Cycle Standard 39mm Fork Boot Gaiter Set for Harley Sportster's Front Forks
32 reviews $48.08

Cycle Standard Transmission Mounting Plate 1986-1999 Harley-Davidson Softail - Black
1 review $36.04

Unity Manufacturing Two Bolt Carburetor Support Bracket - Stainless Steel
4 reviews $18.00

Cycle Standard Clutch Cable OEM #38606-87A 1987-1994 Harley-Davidson FXR +4 inch Extended
$71.98

The Speed Merchant 39 mm Fork Preload Adjuster - Raw Machined Finish
$143.96 $159.95

Cycle Standard Clutch Cable OEM #38787-06C Harley Dyna 2006-2017 +4 inch Extended
1 review $71.94

Goodridge Universal Braided Stainless Brake Line - 52" - Ebony
$47.95

Cycle Standard 41mm Fork Seal Rebuild Kit - 1984-2013 Harley-Davidson FLT 1984-86 FXWG 1984-17 Softail 2012-16 FLD
1 review $20.54

Lowbrow Customs Springer Riser Studs 1/2-13 x 1/2 inch-20 thread for Harley, Mid-USA, DNA, Paugcho Springers
83 reviews $15.97

Goodridge 35 Degree 7/16 inch Banjo Fitting - Ebony
4 reviews $15.95

Cycle Standard 1/4 inch NPT Petcock Black - Straight
9 reviews $35.88

Cycle Standard Universal Fork Boot Gaiter Set for 41mm Front Forks
11 reviews $47.80

Cycle Standard Side-Mount Halogen Headlight - 5.75" Chrome
12 reviews $47.41

Colony #2322-11 Rocker Arm Cover Stud Kit 1966-1984 Harley-Davidson Shovelhead
4 reviews $47.38

Cycle Electric CE-105-13 Replacement Regulator 1982-E1984 Harley-Davidson XLH/XLS w/model 65B Hitati Generator
$141.76 $151.74

Cycle Electric CE-104 Replacement Regulator 1978-1981 Harley-Davidson XLH/XLCH/XLS Generator
$141.76 $151.74

James Gaskets Fork Seal 49MM Rebuild Kit 2006-Up Harley-Davidson FXD/FLD
4 reviews $28.29

Cycle Standard Fuel Injection Fuel Line Assembly - Stock Length - 2007-2022 Harley-Davidson Sportster
2 reviews $70.53

Cycle Standard Transmission Sprocket .75" Offset - 23 Tooth - 1991-2006 Harley-Davidson XL 1986-2006 Big Twin 5-Speed
$70.46

Colony #2091-12 Replacement Pushrod Covers Late 1979-1984 Harley-Davidson Shovelhead - Chrome Plated
2 reviews $70.39

Colony #9609-15 Hex Bolt & Washer Kit Rear Wheel 1973-1998 Harley-Davidson Big Twin 1979-1990 XL - Chrome Plated
$35.19

Cycle Standard Transmission Sprocket .5" Offset - 23 Tooth - 1991-2006 Harley-Davidson XL 1986-2006 Big Twin 5-Speed
$70.34

Cycle Standard Transmission Sprocket .5" Offset - 22 Tooth - 1991-2006 Harley-Davidson XL 1986-2006 Big Twin 5-Speed
$70.34

Lowbrow Customs Inline Springer Fork Handlebar Fabricator Top Clamp - Raw Steel
3 reviews $140.53

Cycle Electric CE-101 Replacement Regulator 1958-1964 Harley-Davidson XL/XLH/XLCH/FL/FLH 6 Volt 2 Brush Generators
$140.51 $150.41

Colony #2253-36 Adjustable Pushrod Cover Kit 2004-Up Harley-Davidson Sportster
$140.00

Red Fox Enterprises Glo Brite Glass License Plate Reflector - Red
7 reviews $28.00

Colony #2255-36 Adjustable Pushrod Cover Kit 1990-2003 Harley-Davidson Sportster - Chrome Plated
2 reviews $140.00

Progressive Suspension 49MM Heavy-Duty Fork Spring Kit 2006-2017 Harley-Davidson FXD/B/C/L FXDWG 2008-2017 FXDF 2008-2011 FXCW/C
$139.95

Pingel 3/8 inch NPT Power-Flo Petcock - Round Body - Chrome - Backward
$139.95

Gasbox Shorty DIY Sissy Bar Kit
10 reviews $69.95

Gasbox Axle Mount License Plate Bracket - 1 inch (25mm) Axles - Vertical or Horizontal
5 reviews $69.95

S&S Cycle Adjustable Carburetor Support Bracket Kit
$34.95

Goodridge Universal Braided Stainless Brake Line - 15" - Ebony
$27.95

Goodridge Straight 3/8 inch/10mm Banjo Fitting - Stainless Steel
4 reviews $13.95

Colony #7500-2 Oversize Timing Plug/Oil Tank Plug & Tap Kit 11/16-16 Thread - Chrome Plated
$46.35

Colony #3321-1 Front Wheel Hub Plate 2000-2015 Harley-Davidson Sportster XL - Black
9 reviews $19.80

Cycle Standard Throttle Cable OEM #56400-96 1996-Up Harley-Davidson Sportster XL
10 reviews $34.60

Cycle Standard Popsicle Kicker Pedal with Rubber for 1977 & earlier Harley-Davidson Kicker Arms Replaces OEM #33175-16A
18 reviews $27.65

Cycle Standard Throttle Idle Cable OEM #56309-88 Harley Sportster XL 1988-1995
13 reviews $27.61

FNA Custom Cycle Spark Plug Wire Kits - Blue Explosion
2 reviews $69.00

Colony #2425-2 Clutch Pushrod Adjusting Screw Locknut 1941-1984 Harley-Davidson Big Twin - Parkerized
1 review $15.31

Lowbrow Customs Air Cleaner Backplate Gasket for Super E / G Carburetor
45 reviews $2.22

Lowbrow Customs Dual 4-1/2 inch Bottom Mount Headlight Bracket - Harley Narrow Glide, Triumph, BSA - Tumbled Stainless
5 reviews $45.76

Cycle Standard Kickstand Spring 1985-2006 Harley-Davidson Softail / 1991 & Up Touring / 1991 & Up Sportster Models - Black - OEM #50005-85A
44 reviews $9.09

Bates Linkert 3-Bolt Carb Throttle Conversion Kit 1936-39 Harley-Davidson Knucklehead and All Flatheads
2 reviews $68.14

Pingel In-Line Custom Fuel Valve
$135.95

Cycle Electric Stator CE-0732 for 2007-2013 Harley-Davidson Sportsters OEM# 29997-07
$135.76 $145.32

Drag Specialties Primary Chain 2004-2022 Harley-Davidson Sportster XL 1200
1 review $157.89

Colony #9772-22 Lower Motor Mount Allen Screw Kit 1986-1998 Harley-Davidson Sportster - Chrome Plated
1 review $33.84

Mooneyes 1933 - 1936 Ford Duolamp Tail Light Rat Fink Replacement Lens
$67.67

Mooneyes Finned Points Cover for Harley-Davdison 1999 & Up Twin Cam
4 reviews $67.67

Prism Supply Co. 3/4"-18 Petcock Fits Early Style Harley-Davidson Tanks - Brass
$134.99

Cycle Standard Bayonet / Cam Harley Style Vented 2.5" Gas Cap - Gloss Black
7 reviews $33.70

Cycle Standard Turn Signal Fork Clamps for 39mm Fork Tubes - Black
35 reviews $33.64 $46.22

Goodridge 7/16-24 inch Single Banjo Bolt - Stainless Steel
$14.95

Cycle Standard Clutch Cable OEM #38606-87A 1987-1994 Harley-Davidson FXR
1 review $66.94

EBC Brakes Semi Metallic Rear Brake Pads L1987-99 Harley-Davidson XL
$44.55 $47.67

Colony #2428-6 Handlebar Damper Kit 1973-Up Harley-Davidson Big Twin/Sportster
12 reviews $16.70

Drag Specialties Shifter Linkage - Black - 1984-2021 Harley-Davidson FLHT/FLHR/FLHX/FLTRX/FLTRU 2000-17 FLST/FLS
$66.73

Colony #7153-20 Heat Treated Acorn Head Bolt Kit - 1948-1983 Harley-Davidson Panhead/Shovelhead - Chrome Plated
$66.63

James Gaskets Fork Seal Rebuild Kit 1984-2017 Harley-Davidson FL FX
2 reviews $22.20

Mid-USA Replacement Pads for Four Piston Brake Calipers
$16.60

Drag Specialties Ape Hanger/Narrow TBW Handlebars - 1 inch - 18 inch Rise - Black
$132.49

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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