Cylinder Works Standard Bore Cylinder Kit 20010-K01 — 2014-2015 Yamaha YZ250F / 2015-2016 YZ250FX / 2015-2017 WR250F 

Product Description

Give your Yamaha 250 four-stroke its factory-fresh bite back with the Cylinder Works Standard Bore Cylinder Kit. Designed as a direct bolt-on replacement, this kit bypasses the expensive, time-consuming process of sending your old cylinder out for machining or re-plating. It matches the OEM look seamlessly while delivering a high-performance top end rebuild that is engineered to handle the brutal demands of modern motocross and trail riding.

Each kit features a premium cylinder coated in premium Nickel Silicon Carbide for exceptional wear resistance, reduced friction, and optimal thermal heat transfer. To guarantee maximum performance, lower engine noise, and unmatched longevity, Cylinder Works includes a precision-matched, high-quality Vertex piston. Complete with all necessary gaskets, rings, pins, and clips, this kit provides a hassle-free installation that restores compression and dependable track-ready power.

Top Features: Cylinder Works Cylinder Kit
o Ready-to-install, direct bolt-on design with no machining or re-plating required.
o Features premium Nickel Silicon Carbide plating for long-lasting performance.
o Includes a precision-matched Vertex piston kit to reduce engine noise and friction.
o Proudly manufactured in the USA and supplied with all necessary top-end gaskets and hardware.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Do I need to modify my engine cases to install this cylinder kit?
A: No. This is a standard bore, direct bolt-on kit engineered to meet exact factory dimensions, requiring no modification to your stock engine setups.

Q: Does this cylinder kit come with the required gaskets for a top-end rebuild?
A: Yes, the Cylinder Works kit comes complete with the cylinder, matched Vertex piston, ring set, wrist pin, clips, and top-end replacement gaskets.

Q: What is the benefit of the Nickel Silicon Carbide coating?
A: It provides an incredibly durable wearing surface that reduces friction, transfers combustion heat much more efficiently, and extends the lifespan of your top end.

Expert Pro-Tip: When installing a fresh four-stroke cylinder and piston kit, cleanliness is paramount. Before assembly, clean the cylinder bore thoroughly with warm soapy water until a clean white cloth wiped inside shows no dark honing residue, then oil it lightly with fresh engine oil. Ensure you check your valve clearances during reassembly; a new top end with fresh compression will quickly expose tight or leaky valves that might have gone unnoticed before.

Recommended Pairings:
o Yamaha YZ250F / YZ250FX Performance Parts & Upgrades
o Yamaha 4-Stroke Performance Parts
o Premium Motorcycle Chemicals & Engine Oils

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.

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