Cylinder Works Cylinder Heads

Cylinder Works Cylinder Heads: OEM Quality, Competition-Ready Engineering

When a powersports engine has seen enough hours on the track or trail, the cylinder head is often the first component to show wear — and choosing the right replacement matters enormously. Cylinder Works has built its reputation as one of the premier suppliers of OEM-quality engine components for dirt bikes and ATVs, and their cylinder heads reflect that commitment with every machined surface.

Part of the All Balls Racing Group family, Cylinder Works is a top supplier of OEM-quality cylinders and engine components for dirt bike and motocross engines. Their cylinder head kits are engineered as direct replacements that restore — and in some cases improve upon — factory performance without requiring the cost of OEM dealership pricing.

What Sets Cylinder Works Cylinder Heads Apart

Cylinder Works cylinder head kits are not bare castings. They arrive ready for a professional-grade installation with a thoughtful set of included hardware and machining upgrades. Key features include:

• New replacement cylinder heads that include cam caps and cam cap bolts (where applicable), along with C630 (nickel/aluminum/bronze) valve seats and guides.
• A competition valve job, shortened valve guides to accept higher-lift cams, an unshrouded combustion chamber, and a blended bowl seat to port — all where applicable.
• Stock-shaped ports, and every unit is made in the U.S.A.

The unshrouded combustion chamber and blended bowl-to-port transition are details that matter to riders who want more than just a basic swap. These features improve airflow characteristics compared to worn OEM units, supporting efficient combustion without departing from the stock port shape that governs fuel mapping and cam timing.

Engineered for Real-World Powersports Applications

Enthusiasts of dirt bikes, ATVs, and UTVs rely on Cylinder Works for high-performance parts. The cylinder head kits are designed with an OEM-fit philosophy: these heads are essentially OEM replacement heads without the OEM cost, and they work with all remaining OEM cylinder head parts on the machine. That means riders can mix and match existing valvetrain components — valves, springs, and lifters — while still benefiting from freshly machined seats, new guides, and a proper valve job from the factory.

One satisfied builder noted the "precise CNC machined cuts on all the surfaces" and observed that "the bowl area was blended far better than the factory." That kind of machining precision translates directly to better sealing, improved flow, and long service life on the trail or track.

Broad Fitment Across Top Makes

Cylinder Works cylinder heads cover a wide range of popular motocross and off-road platforms, including models from Honda, Kawasaki, Suzuki, Yamaha, and more. Whether you're rebuilding a four-stroke motocrosser after a high-hour season or restoring a trail bike to like-new compression, Cylinder Works offers a fitment-guaranteed solution that keeps downtime short and confidence high.

Explore the full Cylinder Works brand catalog for complementary top-end components, or browse the complete selection of cylinder heads to find the right fit for your machine.