CYLINDER WORKS Yamaha YZ250 Standard Bore Cylinder Kit Part 20009-K01

The CYLINDER WORKS Yamaha YZ250 Standard Bore Cylinder Kit Part 20009-K01 is designed to restore and enhance the performance of your Yamaha YZ250 motorcycle. This comprehensive kit includes a cylinder, piston kit, and gaskets, providing everything needed for a complete rebuild. The cylinder features a nickel silicon carbide plating that ensures longer life and durability, making it a reliable choice for both daily riding and competitive racing. Its stock-like appearance maintains the original aesthetic of your bike while offering improved performance.
This kit is compatible with Yamaha YZ250 models from 1999 through 2008 and is engineered for easy installation, requiring no machining work when used as a replacement for a standard bore. Matched with Vertex pistons, the components work together to optimize longevity, reduce engine noise, and deliver consistent high performance. The included gaskets are part of the top end gasket kit, though valve stem seals are not included.
In addition to the standard bore option, the kit also offers high compression and Big Bore variations, making it a versatile solution for various performance needs. Replacement pistons, gaskets, and ring sets are also available separately for ongoing maintenance and upgrades. This kit is an ideal choice for enthusiasts looking to refurbish their Yamaha YZ250 with OEM-quality components that restore factory performance and reliability.

Features:

• Complete standard bore kits for Yamaha YZ250

• Includes cylinder, piston kit, and gaskets

• Nickel silicon carbide plating for extended durability

• No machine work needed for installation

• Compatible with Yamaha YZ250 models from 1999 to 2008

• Matched with Vertex pistons for optimized performance

• Available in high compression and Big Bore options

• Replacement pistons, gaskets, and rings sold separately

• Cylinder maintains stock appearance for seamless integration

Fits,
Yamaha YZ250 1999
Yamaha YZ250 2000
Yamaha YZ250 2001
Yamaha YZ250 2002
Yamaha YZ250 2003
Yamaha YZ250 2004
Yamaha YZ250 2005
Yamaha YZ250 2006
Yamaha YZ250 2007
Yamaha YZ250 2008
Yamaha YZ250 2009
Yamaha YZ250 2010
Yamaha YZ250 2011
Yamaha YZ250 2012
Yamaha YZ250 2013
Yamaha YZ250 2014
Yamaha YZ250 2015
Yamaha YZ250 2016
Yamaha YZ250 2017
Yamaha YZ250 2018
Yamaha YZ250 2019
Yamaha YZ250 2020
Yamaha YZ250 2021
Yamaha YZ250 2022
Yamaha YZ250 2023