What parts are included in this cylinder head kit?

This kit includes the cast aluminum cylinder head, cam caps, and bolts. You will need to purchase valves, springs, retainers, and lifters separately to complete the assembly.

What is the benefit of the unshrouded combustion chamber and blended bowl?

An unshrouded combustion chamber and a blended bowl work together to improve airflow into and out of the cylinder. This can lead to better engine performance and a more efficient burn.

Can I use my stock valves and springs with this head?

This cylinder head is designed to accept high-lift cams, and the valve guides are shortened to accommodate them. While stock-shaped ports are used, it's recommended to use compatible valves, springs, retainers, and lifters that are designed for performance builds to take full advantage of the head's capabilities.

Cylinder Works 04-05 Kawasaki KX 250 F 250cc Cylinder Head Kit

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Specifications

Brand: Cylinder Works
Part #: CH3002-K01
UPC: 714205041866

Cylinder Works 04-05 Kawasaki KX 250 F 250cc Cylinder Head Kit

Name: Cylinder Works 04-05 Kawasaki KX 250 F 250cc Cylinder Head Kit
Brand: Cylinder Works
Price: 583.06 USD
Availability: InStock

$583.06

On Backorder — Expected to ship by May 2, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Fits 2004-2005 Kawasaki KX 250 F.
OEM-style cast aluminum replacement cylinder head.
Includes cam caps and bolts for a ready-to-install kit.
Unshrouded combustion chamber improves airflow.
Blended bowl and competition-grade valve job for enhanced performance.
Shortened valve guides accept high lift cams for greater torque and power.

This cylinder head kit is designed for the 2004-2005 Kawasaki KX 250 F. Please verify fitment for your specific model year.

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Product Details

If you're rebuilding the top end of your 2004 or 2005 Kawasaki KX 250 F, this Cylinder Works cylinder head kit is a solid option to get you back on the track. This kit replaces the original cylinder head with an OEM-style cast aluminum unit, designed to restore your engine's performance. It comes complete with cam caps and bolts, so you can get right to installation without hunting for extra parts.

What sets this head apart is its attention to airflow and performance. The combustion chamber is unshrouded, and the ports are shaped to match stock for high performance, while the bowl is blended for improved airflow. It also features a competition-grade valve job, meaning the valve seats are precisely cut for optimal sealing and performance. The valve guides are intentionally shortened to accommodate high-lift cams, which can give you a noticeable boost in torque and overall power. Plus, the C630 nickel/aluminum valve seats and guides are a smart choice because they are gentler on your valves, helping to reduce wear over time.

Keep in mind that while this kit includes the cylinder head, cam caps, and bolts, you'll need to purchase the valves, springs, retainers, and lifters separately. This allows you to customize your build with the specific components that best suit your riding style and performance goals.