Steel Intake Valve and Spring Conversion Kit for Yamaha YFZ450R 09-23 - WE – A Diversified Solution Provider with Over 15 Years of Professional ATV & UTV Parts Manufacturing Experience. Since 2010, We Have Produced More Than 16,500 Quality-Tested Clutch Types for Powersports and Leisure Vehicles. Our Extensive Catalog Covers Everything from Clutches to Complete Drivetrain Components, Winning Recognition and Trust from Customers at Home and Abroad. Whether You Need Reliable Replacement Parts for Utility Terrain Vehicles, High-Performance Sport Models, or Custom Solutions for OEM Projects, WE Delivers World-Leading Quality and Durability to Keep Your Machine Running Strong.