CYLINDER WORKS Yamaha YFZ450R & YFZ450X Complete Standard Bore Cylinder Kit Part 21003-K02

Upgrade your Yamaha YFZ450R or YFZ450X with the Cylinder Works complete standard bore cylinder kit, designed for optimal performance and durability. This kit includes a high-quality cylinder, piston kit, and gaskets, providing everything needed for a comprehensive rebuild or upgrade. The cylinder features a nickel silicon carbide plating for enhanced longevity and resistance to wear, ensuring your engine remains dependable even under demanding conditions. Additionally, the design closely resembles the stock cylinder, making installation straightforward without requiring machine work, which saves time and expense.
The kit is available in various configurations, including standard bore, high compression, and big bore options, allowing you to tailor your ATV's performance to your riding style. Matched with Vertex pistons, these components work together to maximize engine performance, reduce noise, and extend engine life. The top end gasket kit does not include valve stem seals, so additional parts may be needed for a complete rebuild. Replacement pistons, gaskets, and ring sets are also available to facilitate ongoing maintenance or upgrades.
This cylinder kit is specifically designed for models from 2009 through 2017 Yamaha YFZ450R and the 2010 Yamaha YFZ450X, ensuring perfect fitment and compatibility. Its no-machine-work-needed installation process makes it an ideal choice for enthusiasts and professionals alike seeking a reliable upgrade that restores engine performance while maintaining the stock look. Whether you're restoring your ATV or enhancing its power, the Cylinder Works Yamaha YFZ450R & YFZ450X cylinder kit offers a durable, performance-oriented solution that stands the test of time.

Features:

• Complete standard bore kits for Yamaha YFZ450R and YFZ450X

• Complete standard bore high compression kits for enhanced power

• Complete Big Bore Kits for increased displacement

• Includes cylinder, piston kit, and gaskets for a full rebuild

• Top end gasket kit does not include valve stem seals

• Matched with Vertex pistons to ensure longevity and reduce engine noise

• Replacement piston, gaskets, and ring sets available for maintenance

• Cylinder maintains stock appearance for seamless installation

• Nickel silicon carbide plating for longer service life

• No machine work needed for installation

• Designed as a replacement cylinder for standard bore only

Fits,
Yamaha YFZ450R 2009
Yamaha YFZ450R 2010
Yamaha YFZ450R 2011
Yamaha YFZ450R 2012
Yamaha YFZ450R 2013
Yamaha YFZ450R 2014
Yamaha YFZ450R 2015
Yamaha YFZ450R 2016
Yamaha YFZ450R 2017
Yamaha YFZ450X 2010
Yamaha YFZ450X 2011