Cylinder Works Cylinder Head – Yamaha YZ125 (2005–2021)
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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:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.
