Cylinder Works 66.40mm Standard Bore Cylinder Kit – Yamaha YZ250 (1999–2023)
Cylinder Works Standard Bore Cylinder Kit (66.40mm) – Yamaha YZ250 (1999–2023)
🛠️ Description
Restore the power and reliability of your YZ250 with this Cylinder Works Standard Bore Cylinder Kit. Designed as a direct bolt-on replacement, it delivers OEM-level fit and performance while eliminating the need for cylinder replating. Perfect for riders who want a fresh top end with long-lasting durability.
✅ What’s Included
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Standard bore cylinder (66.40mm)
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Vertex piston kit (piston, rings, pin, clips)
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Top-end gasket kit
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Wrist pin bearing
📦 Fitment
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Yamaha YZ250 (1999–2023)
🛡️ Warranty Info
All Cylinder Works kits are backed by manufacturer warranty against defects in materials and workmanship. Professional installation is recommended.
🔑 Key Features
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Ready-to-install, direct bolt-on cylinder
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Nickel Silicon Carbide plating for durability and longevity
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Matches OEM appearance and performance
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Includes matched Vertex piston for reduced engine noise and reliable performance
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No replating or machining required
📦 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
- Sneakers: 1–2 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.
