Cylinder Works Cylinder Kit – Yamaha YZ125 / YZ125X (2005–2022)
Cylinder Works Standard Bore Cylinder Kit – Yamaha YZ125 / YZ125X (2005–2022) (CW20011K01 / 422-20011K)
Description
Bring your Yamaha YZ125 or YZ125X back to life with the Cylinder Works CW20011K01 Standard Bore Cylinder Kit — a complete OEM-style top-end rebuild package designed for performance and reliability.
This kit includes everything you need for a full top-end refresh, featuring a nickel-silicon-carbide plated 54 mm cylinder, a Vertex piston kit, and a complete gasket set. Perfect for riders who want a stock feel with factory-level fit, finish, and longevity.
What’s Included
✅ Nickel silicon carbide plated 54 mm standard bore cylinder
✅ Vertex piston kit (piston, rings, wrist pin, and clips)
✅ Complete top-end gasket set
✅ O-rings and hardware for installation
(Everything you need for a full top-end rebuild — just bolt on and ride.)
Fitment
📦 Fits:
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2005–2022 Yamaha YZ125
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2020–2022 Yamaha YZ125X
Key Features
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OEM-style design for perfect fit and reliability
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Matched Vertex piston ensures reduced engine noise and long service life
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Nickel silicon carbide plating for excellent wear resistance
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Direct bolt-on installation — no machining required
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Designed for closed-course competition use only
Warranty Info
Manufactured by Cylinder Works USA.
Warranty and technical support are handled directly through the manufacturer.
Price & SKU
💲 Retail Price: $615.95
SKU: 422-20011K / CW20011K01
Estimated Shipping Weight: 3.10 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
- 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.
