Cylinder Works 20009 Cylinder – Yamaha YZ250 (1999-2025)
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Cylinder Works Standard Bore Cylinder – Yamaha YZ250 (1999–2025)
Bring your YZ250 back to factory performance with the Cylinder Works 20009 Standard Bore Cylinder. This direct-bolt-on replacement delivers OEM fit, finish, and durability without the hassle of replating or machine work. Perfect for complete top-end rebuilds or fresh race prep.
Description
Precision-engineered and nickel-silicon-carbide plated, this cylinder provides excellent heat transfer, wear resistance, and long service life. Each unit is cast and finished in the USA to meet or exceed OEM standards, ensuring a perfect fit for all YZ250 2-stroke engines from 1999 through 2025.
What’s Included
✅ Cylinder Works 66.40 mm Standard Bore Cylinder
✅ Ready-to-install — direct bolt-on design
✅ Works with OEM or stock-bore piston and gasket kits
Fitment
📦 Yamaha YZ250 (1999 – 2025)
Designed for stock-bore (66.4 mm) top ends. Works with OEM cylinder head and valves.
Warranty Info
🛡️ Backed by Cylinder Works USA manufacturing quality and material warranty.
Key Features
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Ready to install — no replating or machining required
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Nickel-silicon-carbide plating for long-life performance
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OEM-grade casting and finish; matches factory port layout
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Maintains 250 cc displacement and original compression
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Made in the USA
Price & SKU
💲 Retail Price: $597.95
🔑 SKU: 0931-1078 / 20009
⚖️ Weight: 6.06 lb
📦 Ships next business day from stocked warehouse
📦 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.
