Harley Hardware Parts

Exposed fasteners are an eyesore on any build—and rusty bolts signal neglect, regardless of how clean the rest of your engine bay is. The CIRO Cap Flute M8 Chrome instantly covers worn or discolored bolt heads while adding a polished, professional finish...

Your engine's rocker boxes deserve better than exposed, corroded fasteners that detract from an otherwise clean build. CIRO's Peaked Rocker Box Caps transform neglected bolt heads into a finished, professional appearance while protecting hardware from...

If you've invested in Ciro trim for your fairing, the W-Shield Screw caps deliver the finishing detail that separates a complete installation from an incomplete one. These quick-install caps protect windshield screw heads from corrosion and road debris...

Precision spacers are essential for proper bolt spacing in suspension, drivetrain, and chassis assembly work. The COLONY Spacer maintains critical clearances and load distribution across multiple bolt sizes, eliminating the guesswork in high-stress...

Precision spacers are essential for achieving proper bolt spacing and alignment in high-performance engine bays, chassis builds, and suspension systems. The COLONY Spacer delivers consistent, reliable standoff distance without the guesswork, ensuring...

Precision spacers are essential for maintaining exact bolt clearances in high-performance assemblies, preventing misalignment that can compromise structural integrity or cause component binding. The COLONY Spacer delivers CNC-precision engineering in a...

Precision spacers are foundational to any build that demands tight tolerances and reliable fastening. The COLONY Spacer ensures consistent bolt spacing across multiple fastener sizes, eliminating guesswork and reducing the risk of misalignment in...

Precision fastening is non-negotiable when building or maintaining high-performance engines and custom assemblies. These 10-24 nut wells from Drag Specialties provide reliable, repeatable threads for critical applications where standard fasteners fall...

Nut wells are essential fastening components that provide a clean, recessed mounting point for threaded fasteners in custom fabrication and motorsports applications. Whether you're building a custom frame, securing components in tight spaces, or creating...

Precision spacers are essential for dialing in critical clearances on high-performance engine builds, suspension assemblies, and drivetrain work. This COLONY spacer eliminates guesswork by providing exact standoff distances, ensuring components sit at...

A worn or damaged main drive gear key can cause transmission synchronization issues, power loss, and catastrophic gear failure under load. This OEM-spec replacement key restores proper engagement between the main shaft and drive gear, ensuring reliable...

A clutch hub nut lock tab is a critical retention component that prevents your clutch hub nut from loosening due to vibration and rotational forces—a failure that can result in catastrophic drivetrain damage. The JAMES GASKET 37503-41 offers OEM-quality...

When you're tuning a performance engine or converting fuel delivery systems, vacuum line management becomes critical—and that means properly sealing unused ports to prevent boost leaks, fuel system inconsistencies, and check engine lights. The JAMES...

A leaking speedo plug isn't just an annoyance—it's a gateway to transmission fluid loss and potential internal damage. The JAMES GASKET Speedo Plug for 4-speed transmissions delivers a reliable, OEM-quality seal that stops weeping before it becomes a...

A leaking speedometer plug can compromise your transmission's integrity and lead to costly fluid loss during high-performance driving. The JAMES GASKET Speedo Plug is engineered with reinforced synthetic rubber to provide a reliable, long-lasting seal on...

A proper grip spacer isn't just about aesthetics—it's about ergonomics and control. The JOKER MACHINE Handlebar Grip Spacer gives you the precise spacing and balance needed for confident handling, while its refined design complements any modern or...

A worn or damaged timing bolt can compromise your ignition advance unit's precision and reliability, leading to inconsistent timing and reduced engine performance. This OEM-spec replacement bolt from Drag Specialties ensures proper advance unit function...

Ignition system reliability depends on secure fastening—loose studs lead to electrical dropout and performance loss on the track or street. This 10-pack from Drag Specialties ensures you have quality replacement studs, screws, and washers on hand for...

Engine bay aesthetics matter, especially when years of heat cycles and weather exposure leave your valve cover bolts looking neglected. The CIRO Cap Crown Engine Black transforms worn, corroded fasteners into a polished, finished detail that elevates the...

The oil pump key is a critical yet often overlooked component that ensures proper crankshaft-to-oil pump synchronization on Big Twin engines. A worn or damaged key can cause timing slippage, leading to inadequate oil pressure and accelerated engine wear...