Heads & Parts

Harley Cylinder Heads & Engine Head Parts — Performance, Rebuilds & Reliable Engine Top End

Welcome to our Harley Heads & Parts collection — your one-stop shop for cylinder heads, head components, gaskets, valves, springs, and all the parts you need for head rebuilds or performance upgrades. Whether you’re restoring a classic cruiser, rebuilding a high-mile engine, or building a performance-oriented powerplant — top-quality head parts are vital for power, reliability, and smooth engine performance.

Why Cylinder Heads & Head Parts Matter

The cylinder heads control airflow into and out of your engine, seal the combustion chamber, and house critical components like valves, springs, and combustion chambers. Using quality head parts ensures:

• Proper sealing and combustion chamber integrity — critical for compression, combustion efficiency, and preventing leaks.

• Optimal airflow and valve timing — which influences power, torque, throttle response, and engine efficiency.

• Durability under stress — especially if the engine sees higher RPMs, increased compression, or performance modifications.

• Reliable sealing and long-term maintenance — with correct gaskets, seats, and valves, your engine will avoid premature wear, leaks, and performance loss.

Neglecting head components can lead to compression loss, misfires, loss of power, or even engine damage — making this one of the most important areas when rebuilding or upgrading an engine.

What You’ll Find in Our Heads & Parts Collection

Our Harley Heads & Parts category includes a wide range of components to support rebuilds, performance upgrades, or maintenance:

• Complete Cylinder Heads (Assembled or Bare) — ready for install (or port and polish) or as a base for custom builds.

• Cylinder Head Kits — gaskets, seals, valves, springs, retainers, and complete head-rebuild kits.

• Performance Heads & Upgraded Valves — for improved airflow, higher compression, better combustion, and more power.

• Valve Springs, Seats & Retainers — essential components for valve control, combustion pressure, and RPM stability.

• Head Gasket & Seal Sets — to ensure correct sealing when rebuilding or replacing heads.

• Valve Covers, Rocker Covers & External Head Hardware — cosmetic and functional parts to finish or repair your head assembly.

• Ported Heads & Aftermarket Upgrades — for riders looking to optimize airflow, compression, or engine tuning for more torque/power.

These parts support a variety of Harley-Davidson platforms giving you flexibility for stock restoration or performance builds.

Frequently Asked Questions

Do I need new heads when rebuilding my engine?
Not always — if the existing heads are undamaged and sealing surfaces are in good condition. But if you're rebuilding for performance or high mileage, upgrading heads or rebuilding heads with new valves, seals, and springs is recommended.

Will upgraded heads add a lot of power?
Upgraded heads improve airflow and combustion efficiency — which can yield noticeable gains in power, torque, and throttle response especially when paired with intake, exhaust, and fuel upgrades.

Are rebuild kits necessary when replacing heads?
Yes — using fresh valve springs, seals, gaskets, and retainers ensures proper sealing and durability. A mismatch or reused parts can lead to leaks, compression loss, or engine damage.

Can I use the same head parts on different Harley models?
Not always — Harley engines vary significantly between Evo, Twin-Cam, Sportster, and other platforms. Always use head parts designed for your specific engine model and year.

Ready to Upgrade or Rebuild Your Engine’s Top End?

Explore our full selection of Harley cylinder heads, head-rebuild kits, valves, springs, gaskets, ported heads, and performance upgrades to find the perfect fit for your build. Whether you’re restoring, maintaining, or enhancing — we have the engine head parts to deliver power, reliability, and precision.