Restore dependable top-end performance with the Cylinder Works 20009 Standard Bore Replacement Cylinder. Designed for select 1999 through 2008 Yamaha YZ250 models, this cylinder is engineered as a direct replacement for the original standard-bore component. Its stock-style appearance maintains the factory look while providing a durable foundation for reliable engine service and performance.
Manufacturer: Cylinder Works. Vendor Part Number: 20009. This standard-bore cylinder is compatible with 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, and 2008 Yamaha YZ250 motorcycles. It is intended for standard-bore applications and is supplied as the cylinder only, making it suitable for replacement or use with compatible piston, ring, and gasket components.
Feature: Nickel silicon carbide plating helps promote long service life, consistent cylinder performance, and resistance to wear. Feature: Stock-style appearance integrates cleanly with the original engine configuration. Feature: Standard-bore replacement design supports straightforward installation without cylinder machining when used with the correct matching components. Feature: Cylinder Works matches its cylinders with Vertex piston kits for dependable fit, performance, reduced engine noise, and durability; replacement piston, gasket, and ring sets are available separately. Always verify piston compatibility, engine condition, and installation specifications before assembly.
This Cylinder Works replacement cylinder is a practical solution for rebuilding the top end of a compatible Yamaha YZ250. For complete installation, use the appropriate piston kit and gaskets for the selected application. Please note that Cylinder Works top-end gasket kits do not include valve stem seals.
Features:
- Complete standard-bore kit options are available for compatible applications
- Complete standard-bore high-compression kit options are available
- Complete big-bore kit options are available
- Includes cylinder, piston kit, and gaskets when purchased as a complete kit; this listing is for the cylinder only
- Top-end gasket kits do not include valve stem seals
- Matched with Vertex pistons for longevity, performance, and reduced engine noise
- Replacement piston, gasket, and ring sets are available separately
- Stock-style cylinder appearance
- Nickel silicon carbide plating for extended service life
- No machining required when installed with the correct compatible components
- Direct standard-bore replacement for select 1999-2008 Yamaha YZ250 models
Fitment:
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 Yamaha YZ250
2024 Yamaha YZ250
2025 Yamaha YZ250