Cylinder Works Cylinder Head Kit For Yamaha YZ125 '05-'21

OEM appearing cast aluminum replacement cylinder head with cam caps and cam cap bolts for ready-to-go installation. An unshrouded combustion chamber delivers better airflow with a blended bowl and competition valve job. Stock-shaped ports deliver higher performance. C630 nickel/aluminum valve seats and guides are easier on the valve to reduce wear. Shortened valve guides accept high lift cams for greater torque and enhanced power. Note: valves, springs, retainers and lifters are sold separately.

• New cast aluminum replacement cylinder head
• Includes cam caps and cam cap bolts
• Unshrouded combustion chamber with a blended bowl and competition valve job
• Stock shaped ports
• C630 (nickel/aluminum/bronze) valve seats and guides that are easier on valves
• Shortened valve guides accept higher lift cams
• Valves, springs, retainers, lifters not included