What components 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 kind of performance improvements can I expect?

The unshrouded combustion chamber, blended bowl, and competition-grade valve job are designed to improve airflow for better torque and enhanced power. The shortened valve guides also allow for higher lift cams, further contributing to performance gains.

Are there any special maintenance requirements for this cylinder head?

While this cylinder head is built for durability with C630 nickel/aluminum valve seats and guides, regular engine maintenance is crucial. Ensure proper oil changes and coolant levels to keep the engine running optimally.

Specifications

Brand: Cylinder Works
Part #: CH1003-K01
UPC: 714205041835

Cylinder Works 04-07 Honda CRF 250 R 250cc Cylinder Head Kit

Name: Cylinder Works 04-07 Honda CRF 250 R 250cc Cylinder Head Kit
Brand: Cylinder Works
SKU: cylinder-works-cylinder-works-04-07-honda-crf-250-r-250cc-cylinder-head-kit-t14-722046
Price: 504.01 USD
Availability: BackOrder

$504.01

On Backorder

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

Key Features

Fits 2004-2007 Honda CRF 250 R.
OEM-style cast aluminum replacement cylinder head.
Includes cam caps and bolts for installation.
Unshrouded combustion chamber improves airflow.
Features a blended bowl and competition-grade valve job.
Shortened valve guides accept high lift cams for increased torque and power.

This cylinder head kit is designed to fit the 2004-2007 Honda CRF 250 R. Please verify fitment for your specific model year.

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About this part

Product Details

This is the Cylinder Works CH1003-K01 cylinder head kit, a direct replacement for your 2004-2007 Honda CRF 250 R. If you're rebuilding the top end of your CRF 250 R, this kit gives you a solid foundation to get your engine running strong again. It's designed to be an OEM-style cast aluminum replacement, meaning it fits right in place of your original head.

What sets this head apart is its focus on improved airflow and performance. The combustion chamber is unshrouded, which helps gases move more freely, and it features a competition-grade valve job with blended bowls. This means the ports are shaped to let more air and fuel mixture in and exhaust out efficiently. The valve guides have been shortened to work with high-lift cams, giving you the potential for more torque and overall power. Plus, it uses C630 nickel/aluminum valve seats and guides, which are known to reduce wear on the valves themselves, helping your engine last longer.

This kit comes complete with cam caps and bolts, so it's ready for installation right out of the box. Keep in mind that valves, springs, retainers, and lifters are sold separately, so you'll need to source those to complete the assembly. This is a well-built component designed to bring your CRF 250 R's engine back to life with improved performance characteristics.