The Athena Power Valve, Part Number S410485303018, is designed for Yamaha YZ125 two-stroke motorcycles from 2005 through 2014. This replacement component supports the engine’s power-valve system, helping maintain proper exhaust-port control and consistent power delivery across the usable RPM range. It is a practical choice for restoring performance when the original power-valve component is worn, damaged, or no longer operating as intended.
Manufactured by Athena and supplied under vendor part number S410485303018, this power valve is intended for direct fitment on applicable Yamaha YZ125 models. Verify the motorcycle year and engine application before installation to ensure compatibility. Proper installation should follow the manufacturer’s service procedures, including inspection and cleaning of related power-valve components.
Built for replacement and service applications, the Athena Power Valve helps support reliable operation of the Yamaha YZ125 engine. Its application-specific design makes it suitable for maintaining the motorcycle’s original power characteristics while replacing a service-worn component.
Features:
- Application: Replacement power valve for Yamaha YZ125 two-stroke motorcycles
- Fitment: 2005-2014 Yamaha YZ125
- Brand: Athena
- Manufacturer Part Number: S410485303018
- Vendor Part Number: S410485303018
- Model: Power Valve Yam
- Installation: Designed for application-specific replacement; follow Yamaha service procedures
Fitment:
2005 Yamaha YZ125
2006 Yamaha YZ125
2007 Yamaha YZ125
2008 Yamaha YZ125
2009 Yamaha YZ125
2010 Yamaha YZ125
2011 Yamaha YZ125
2012 Yamaha YZ125
2013 Yamaha YZ125
2014 Yamaha YZ125
2015 Yamaha YZ125
2016 Yamaha YZ125
2017 Yamaha YZ125
2018 Yamaha YZ125
2019 Yamaha YZ125
2020 Yamaha YZ125
2020 Yamaha YZ125X
2021 Yamaha YZ125
2021 Yamaha YZ125X