2-Stroke Cylinder Head - Stock Cylinder Head Yz250

Stock Cylinder Head Yz250

• California Prop 65 Warning: Cancer and Reproductive Harm - https://www.p65warnings.ca.gov/
• UPC: 714205033571

The Cylinder Works Standard Bore Cylinder Head is a high-quality replacement for the stock cylinder head on Yamaha YZ250 models from 1999 to 2024. Designed for durability and performance, it features a competition valve job, shortened valve guides to accommodate higher lift cams, and an unshrouded combustion chamber for improved airflow. The head includes cam caps, cam cap bolts, and C630 (nickel/aluminum/bronze) valve seats and guides. It maintains stock-shaped ports and a blended bowl seat to port for optimal performance. Note that this kit does not include valves, springs, or lifters.