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

Burly Brand Complete Handlebar Cable/Brake Line Kit for 12" Ape Hanger Handlebars 2004-2006 Harley-Davidson Sportsters
$227.66 $252.95

Progressive Suspension 412 Series 11" Shocks Chrome With Full Covers 1973-1986 Harley-Davidson Shovelheads
$454.95

Drag Specialties Chrome Rear Axle Kit 1977-1999 Harley-Davidson Sportster XL
$90.90

Andrews N4 Camshafts - 2000-Up Harley-Davidson Sportster XL 2000-02 Buell
$454.46 $504.95

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Right Hand Outlet
13 reviews $26.73 $36.84

Cycle Standard Scrambler Handlebars - 1 inch - Chrome
9 reviews From $90.06

Cycle Electric Alternator Kit CE-67TR 1999-2003 Harley-Davidson FXD Dyna - Upgrade to 3 Phase
$451.28 $483.08

Cycle Standard Scrambler Handlebars - 1 inch - Black
14 reviews From $90.65

Cycle Standard 22mm Petcock Round Body Solid Brass Harley-Davidson Style - Left Side Position
15 reviews $75.14

Kustom Tech Classic 7/8 inch Master Cylinder Polished Aluminum - 12 mm Bore
1 review $450.79

Cycle Standard Replacement Flat Sprocket - Chrome - 48 Tooth - 1982-1992 Harley-Davidson Sportster OEM #41470-86T
$75.02

Trader Cody's Choppers Midway Mid Controls 1970-1984 Harley-Davidson Shovelhead 1984-1999 Evo - Chrome
$450.00

Cycle Standard Fork Neck Cup Set for 1948-1986 Harley-Davidson Big Twins OEM #48311-60
4 reviews $50.00

Gasbox Ironhead Sportster Carburetor Support Bracket for 1957-1985 Harley-Davidson Sportsters
36 reviews $18.00

Lowbrow Customs Dimpled Steel Motorcycle Oil Tank for Triumph Choppers
30 reviews $224.94

Thrashin Supply Co. Militant Foot Pegs - Black
3 reviews $149.95

Gasbox Flat Strap Sissy Bar - Round Fender
$89.95

Motone Monza Flip-Up Gas Cap - Polished Aluminum - Vented 2.5" Diameter
5 reviews $64.24

Goodridge Universal Braided Stainless Brake Line - 47" - Ebony
1 review $44.95

S&S Cycle Choke Knob Enricher / Enrichment Device for Harley-Davidson S&S Super E Carbs S&S #11-2084
12 reviews $44.95

Cycle Standard 14 Piece Aluminum Wheel Axle Spacer Kit - 1.5 inch O.D. x 25MM I.D.
4 reviews $74.90

Saddlemen Saddlemen Step Up Seat for 2004-Up Harley-Davidson Sportster - Lattice Stitched
2 reviews $449.00

Kustom Tech Choke Knob Enricher / Enrichment Device Brass Acorn Style for Harley-Davidson S&S Super E / G Carbs
21 reviews $74.67

Mooneyes MOON No Name Air Cleaner for CV or S&S Super E/G Carburetors
5 reviews $112.00

Kustom Tech Classic 1 inch Master Cylinder Polished Aluminum - 12 mm Bore
$447.34

EMGO Cocktail Shaker Mufflers - Upswept - Right Side Pair - for 1-1/2 to 1-3/4 inch Exhaust Pipes
12 reviews $221.02

Lowbrow Customs Fish Scale Heat Shield - 6 inch
22 reviews $73.38

PanheadEric Precision Stainless Steel Rear Chain Adjuster Screws 1936-1972 Harley-Davidson Knucklehead/Panhead/Shovelhead
$40.00

Cycle Standard 22mm Petcock Harley-Davidson Style - Chrome - Straight Outlet
19 reviews $39.99

Lowbrow Customs Smooth Heat Shield - 6 inch
12 reviews $73.20

Lowbrow Customs Deluxe Choke Knob Enricher for Harley-Davidson S&S Super E and G Carburetors - Chrome
45 reviews $48.61

Cycle Standard Throttle Tube - 1 inch - Dual Cable - Black
110 reviews $12.85

Gasbox CV Choke Mount - Tumbled Stainless
25 reviews $18.99

Lowbrow Customs DIY Motorcycle Fender Mounting Strut Kit 2.0
18 reviews $62.33

Cycle Standard Laydown License Plate Mount - Black - Bolt-on Fitment for 1955 - 2018 Harley-Davidson
23 reviews $43.62

Monster Craftsman Powell Peralta Clamp on Chain Tensioner - 1.125 inch Tubing
$145.00

Drag Specialties High Rear Scorpion Seat Pad
$216.95

Lowbrow Customs Brake Caliper Anchor Rod - 4 inch - Chrome
1 review $61.92

Boyer Bransden Electronic Ignition for Triumph and BSA Motorcycles 500 / 650 / 750 c.c.- Kit 00052
21 reviews $216.43

Colony #2188-4 Exhaust Port Studs Kit 1984-2025 Harley-Davidson Big Twin and 1986-2022 XL - Zinc Plated
6 reviews $16.64

Lowbrow Customs T-Bars Handlebars - 12 Inch Rise - 1 inch Diameter - Black
2 reviews $144.14

Cycle Standard Rim Strip for 16 inch Motorcycle Wheels
25 reviews $4.03

Kustom Tech Classic 1 inch Clutch Lever - Raw Aluminum
$215.21

Gasbox Front Motor Plates For Use With Forward Controls Harley-Davidson Sportsters
3 reviews $61.36

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

Drag Specialties Predator III 2-Up Seat - Double Diamond - 1982-2003 Harley-Davidson Sportster XL
2 reviews $426.95

Cycle Standard Cat Eye LED Tail Light - Chrome
10 reviews $85.29

Drag Specialties Premium Shocks - 13 inch - 2004 - 2022 Harley-Davidson Sportster XL - Black
2 reviews $425.95

Cycle Standard 5-1/2 inch Pullback Handlebar Riser Set - Chrome
$106.42

Lowbrow Customs T-Bars Handlebars - 8 inch Rise - 1" Diameter - Black
11 reviews From $141.73

Mid-USA Dual Piston Brake Caliper - Black Anodized
2 reviews $212.50

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

Hawg Supply Carburetor Support Bracket for Harley-Davidson Ironheads and Shovelheads with Fuel Filter
$84.99

Lowbrow Customs Belt to Chain Conversion Kit 2000-2005 Harley-Davidson Dyna Spoked Wheels - Chrome Sprocket
1 review $212.43

Kustom Tech Classic 1 inch Master Cylinder - Raw Aluminum
2 reviews $424.31

Lowbrow Customs Speedometer Gauge Riser Mount for 1.25 inch T-Bar Handlebars - Black
8 reviews $105.93

Drag Specialties Predator III 2-Up Seat - Classic Stitch - 1982-2000 Harley-Davidson FXR
$422.95

James Gaskets Fork Seal Rebuild Kit 1975-1984 35mm Harley-Davidson FX and XL Models
6 reviews $22.19

Cycle Standard 3 position Universal Quick-Start Ignition Key Switch - Chrome Bezel
10 reviews $42.16

Lowbrow Customs Fish Scale Master Cylinder Cover - 1982 - 2005 Harley-Davidson #45004-85
18 reviews $32.34

Cycle Standard Motorcycle Tire Inner Tube - 5.00 / 5.10-16 inch Center Metal Valve
11 reviews $32.33

Cycle Standard Chrome Mesh CV Carb Air Cleaner - Sportster & Big Twin Harley
41 reviews $105.05

LCFabrications Cut Down Sportster Sprocket Cover- 1991-2003 Harley-Davidson Sportster - Tumbled Finish
$140.00

Lowbrow Customs Belt to Chain Conversion Kit Harley-Davidson Dyna 2000-05 Spoked Wheels - Black Sprocket
4 reviews $209.99

Sully's Customs Sporty 2-up - Black Diamond - 1982-2003 Harley-Davidson Sportsters
31 reviews $209.99

Gasbox S&S Carburetor Support Bracket - 1991 - 2006 Harley-Davidson Sportsters
19 reviews $27.99

Gasbox Open Belt Drive Primary License Plate Mount for Harley - Vertical or Horizontal
4 reviews $69.95

Biltwell Whiskey Throttle Tube - Aluminum - 1 inch
16 reviews $59.95

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

Blue Streak High-Performance Points & Condenser Kit for 1970-1979 Harley-Davidson
8 reviews $29.95

Cycle Standard Sintered Metal Disc Front or Rear Brake Pads for 2000-2003 Harley-Davidson Sportster Models OEM #44082-00
7 reviews $52.24

Lowbrow Customs Stingray Ribbed Steel Fender 7 inch Width
23 reviews $208.81

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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