The Cylinder Works CW-PV-K01 Standard Power Valve Kit is designed for Yamaha YZ250 two-stroke engines from 1999 through 2008. This replacement power valve kit helps restore proper exhaust-valve operation and supports consistent engine performance across the operating range. It is a practical service component for riders, technicians, and rebuilders maintaining a compatible Yamaha YZ250.
Manufactured by Cylinder Works, the CW-PV-K01 is built as a standard-size replacement component for applications requiring dependable fit and function. Properly operating power-valve components help the engine transition smoothly through the powerband, contributing to responsive throttle control and predictable performance. The kit is intended for direct application to the listed motorcycle models, subject to comparison with the original equipment and engine configuration.
Fitment: This Cylinder Works standard power valve kit fits 1999–2008 Yamaha YZ250 models. Verify the motorcycle year, model, and existing power-valve assembly before installation. Manufacturer part number CW-PV-K01 and vendor part number 422-2001PV are provided for identification and service reference.
Features:
- Standard-size power valve kit for compatible Yamaha YZ250 engines
- Cylinder Works replacement component for power-valve service and engine rebuilding
- Designed to support proper exhaust-valve operation and consistent power delivery
- Fits 1999–2008 Yamaha YZ250 models
- Manufacturer part number: CW-PV-K01
- Vendor part number: 422-2001PV
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