Cylinder Works Cylinder Head – Yamaha YZ125 (2005–2021)
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- 30-day hassle-free returns
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Cylinder Works Standard Bore Cylinder Head – Yamaha YZ125 (2005–2021) (0930-0205 / CH2005-K01)
Description
Replace your worn or damaged OEM head with the Cylinder Works CH2005-K01 Standard Bore Cylinder Head, precision-machined in the USA for Yamaha YZ125 (2005–2021).
This lightweight aluminum head is designed to restore factory-level compression and combustion efficiency while maintaining OEM port geometry for reliable performance and easy jetting. Perfect for full rebuilds, top-end refreshes, or pairing with a new cylinder and piston kit.
What’s Included
✅ Complete standard-bore cylinder head (ready to install)
✅ Machined aluminum construction with OEM port shape
✅ Pre-chambered dome for stock compression and smooth throttle response
✅ Direct bolt-on fit for all 2005–2021 YZ125 models
(No valves, guides, or lifters – this part is for 2-stroke engines.)
Fitment
📦 Fits:
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2005–2021 Yamaha YZ125
Key Features
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Precision-machined in the USA for consistent chamber volume
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Restores stock compression and powerband characteristics
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OEM-equivalent port shape for reliable jetting
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Lightweight cast-aluminum construction
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Direct bolt-on fit for OEM or Cylinder Works cylinders
Warranty Info
Manufactured by Cylinder Works USA.
Warranty and technical support are handled directly through the manufacturer.
Price & SKU
💲 Retail Price: $134.95
SKU: 0930-0205 / CH2005-K01
Estimated Shipping Weight: 0.75 lb
Handling: Ships next business day
📦 Shipping Information
In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.
